Re: Struggling with indexed/repeating input fields in forms
The same problem with the nested tags occurs. So I´m still trying to figure out why it doesn´t work. But thanks for u´r help! Take care Michael -- Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den Entwickler! - Original Message - From: Stephen Ting [EMAIL PROTECTED] To: 'Struts Users Mailing List' [EMAIL PROTECTED] Sent: Friday, December 13, 2002 2:06 AM Subject: RE: Struggling with indexed/repeating input fields in forms Michael, May be you can try using Nested iterate tag + Nested text tag to populate the indexed fields. I Have successfully done this. If you need further clarification, please email me. Regards, Stephen -Original Message- From: Michael Olszynski [mailto:[EMAIL PROTECTED]] Sent: 13 December 2002 04:21 To: Struts Users Mailing List Subject: Re: Struggling with indexed/repeating input fields in forms That didn´t help.But thanks eitherway. Does anyone have a clue what could be wrong? Any ideas are welcome! -- Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den Entwickler! - Original Message - From: V. Cekvenich [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, December 12, 2002 6:56 PM Subject: Re: Struggling with indexed/repeating input fields One (good) way is to have your beans implement collection. Search messages for cekvenich, I posted like 3 of my last 10 messages related to this. .V Michael Olszynski wrote: I saw a post in the thread http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234. html I have the same problem and I can´t get it working. Perhaps someone can help me? It´d be very nice. I have the problems that the data in my formbean isn´t updated. I mean, I get the data form my formbean in the jsp page. But when I edit it and press submit, it is not updated. I get the same data as I got before. Do you see perhaps an error? (I reviewed it now 7 hours with the sample source attached in the upper thread, and I can´t find any error. Thank you) It´s kind of urgent, because my thesis should be finished at the end of december. Thanks Take care Michael ** ** ** This is my projekterfassung.jsp: html:form action=saveProjekterfassung name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean table width=100% logic:iterate id=element indexId=listIdx name=timeProofForm property=vector tr td bean:write name=element property=date / /td td html:text name=element property=fromHour size=2 maxlength=2 indexed=true/ : html:text name=element property=fromMinute size=2 maxlength=2 indexed=true/ /td td html:text name=element property=toHour size=2 maxlength=2 indexed=true/ : html:text name=element property=toMinute size=2 maxlength=2 indexed=true/ /td /logic:iterate html:submit property=submit/ /html:form ** ** ** My struts-config.xml: ?xml version=1.0 encoding=ISO-8859-1 ? !DOCTYPE struts-config PUBLIC -//Apache Software Foundation//DTD Struts Configuration 1.0//EN http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd; struts-config !-- == Data Source Configuration === -- !-- == Form Bean Definitions === -- form-beans form-bean name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean/ /form-beans !-- == Global Forward Definitions == -- global-forwards forward name=done path=/projekterfassung.jsp/ /global-forwards !-- == Action Mapping Definitions == -- action-mappings action path=/projekterfassung type=de.proway.zerf.web.controller.ShowTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action action path=/saveProjekterfassung type=de.proway.zerf.web.controller.SaveTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action actionpath=/admin/addFormBean type=org.apache.struts.actions.AddFormBeanAction/ actionpath=/admin/addForward type=org.apache.struts.actions.AddForwardAction/ actionpath=/admin/addMapping type=org.apache.struts.actions.AddMappingAction/ actionpath=/admin/reload type=org.apache.struts.actions.ReloadAction/ actionpath=/admin/removeFormBean type
Re: Struggling with indexed/repeating input fields
Hi Brian,
I didn´t really get everything what u wrote. (It´s a problem of my bad
english, I guess). But I made myself some thoughts about what u worte about
id.
And finally I got my error why I only could read from my formbean but not
submit any changes in the bean. The error was the id (I guess).
OK I try to explain (correct me if I´m wrong).
I have a formbean which looks like this:
public class TimeProofFormBean extends ActionForm {
public Vector getTimeProofList() {
return this.timeProofList;
}
public void setTimeProofList( Vector v ) {
this.timeProofList = v;
}
snip
private Vector timeProofList = new Vector();
}
**
In my set and get TimeProofList-Vector I save following bean:
public class TimeProofTableBean implements Serializable {
public TimeProofTableBean(){}
public String getFromHour(){
return FromHour;
}
public void setFromHour(String FromHour){
this.FromHour = FromHour;
}
snip
private String FromHour;
snip
}
**+
In my jsp I had following iterate Tag:
logic:iterate id=element indexId=listIdx name=timeProofForm
property=timeProofList
tr
td bean:write name=element property=date / /td
td html:text name=element property=fromHour size=2 maxlength=2
indexed=true//td
/tr
/logic:iterate
So, I declare an element which comes from my timeProofForm with the method
getTimeProofList. (This returnes a vector of TimeProofTableBeans)
So in the html:text struts goes to element.getfromHour and gets the value of
this fromHour Property in the TimeProofTableBean.
But I never could press submit to get the changes fromHour´s
Now I tried to give id the name of the get/set method of timeProofForm. And
now I could read my data back! It´s working. Here´s my change:
logic:iterate id=timeProofList indexId=listIdx name=timeProofForm
property=timeProofList
tr
td bean:write name=timeProofList property=date / /td
td html:text name=timeProofList property=fromHour size=2
maxlength=2 indexed=true/ /td
/tr
/logic:iterate
Somehow I didn´t understand really why it´s not working with any name on id
(because this bean scope is only valid in the actual jsp pagem isn´t it?)
But if u take a look on the generated html input
input type=text name=timeProofList[0].fromHour maxlength=2 size=2
value=11
It´s somehow logic, that it must work like this. Because the timeProofList
is the name of the get/set Method of the Formbean. So I want to have the
element [0] ind this returned vedtor array. And from the element 0 I want to
get/set the fromHour property.
I hope this also helps somebody.
Take care Michael
--
Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den
Entwickler!
- Original Message -
From: Brian DeLuca [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, December 12, 2002 11:53 PM
Subject: RE: Struggling with indexed/repeating input fields
Michael,
Please Let me know if something doesn't make sense. I have included my
notes in a text file in case the formatting gets nasty.
Enjoy
b-
I too have been struggling with the same type of scenario. I have
figured out a solution and reasoned the problem so here goes. Please bear
with me. I hope others will benefit or invalidate my solution.
Setting up a logic iterate tag for this requires attributes
1 name -- In our case the name of the form
2 property -- the item that is an ArrayList, [], or map etc...
3 id -- This is going to be the key for the item that is set in a
request attribute.
Recommend using type attribute as well.
Our html input tag lets say in this a text tag requires
name -- the bean whose member we want to populate
property -- the member to store the data.
indexed -- Set to TRUE since we are iterating. This value is going
to be the index value of the converted MAP, ArrayList Etc.
Now lets create an example
Item is a class that only contains a string with appropriate get/set
String item;
FooBean has a member
Item [] fooBar;
Our form FooForm has a member of type FooBean.
FooBean myInputRange;
When one wants to create a JSP that uses FooForm and we need to ask
the users for values for myInputRange. To make it work will look like
this in the JSP.
/* This seems ok right? Why do we need Class Item ? Why not a straight
String [] you ask. Good question it is answered in how you need to set up
the subsequent Html:text tag */
Text tag:
/
This seems to be extreme. I agree but it works. Let's go through why all
this madness.
Most doc says that while iterating make name=(Iterate id). That is fine
in bean write but not here. Html:text and other use BaseTagField which will
start writing you
Well that is just not good in the request process the method populatebean
has no concept of anItem, It is not defined in the form so it won't populate
it, in fact you will never
Re: Struggling with indexed/repeating input fields
Yes Micheal you've got it.
Let me warn you though. In the scenario
I was giving you there was a level of nesting that you don't have. If you ever come
across the scenario where you need to have
foo.something[0].property
You will find that putting
logic:iterate id=foo.something
will give you an error on the parsing of ID which was my problem. And you will have to
follow the syntax I have given you earlier. Just a
Heads up.
Good Luck in the future.
b-
--- On Fri 12/13, Michael Olszynski wrote:From: Michael Olszynski [mailto:
[EMAIL PROTECTED]]To: [EMAIL PROTECTED], [EMAIL PROTECTED]: Fri,
13 Dec 2002 10:37:41 +0100Subject: Re: Struggling with indexed/repeating input
fieldsHi Brian,I didn´t really get everything what u wrote. (It´s a problem of my
badenglish, I guess). But I made myself some thoughts about what u worte aboutid.And
finally I got my error why I only could read from my formbean but notsubmit any
changes in the bean. The error was the id (I guess).OK I try to explain (correct me
if I´m wrong).I have a formbean which looks like this:public class TimeProofFormBean
extends ActionForm {public Vector getTimeProofList() {return
this.timeProofList;}public void setTimeProofList( Vector v ) {
this.timeProofList = v;} private Vector timeProofList = new
Vector();}**In my set and get
TimeProofList-Vector I save following bean:public class TimeProofTableBean implements
Serializable {public TimeProofTableBean(){}public String getFromHour(){return
FromHour;}public void setFromHour(String FromHour){this.FromHour =
FromHour;}private String
FromHour;}**+In
my jsp I had following iterate Tag:property=timeProofList indexed=true/
So, I declare an element which comes from my timeProofForm with the
methodgetTimeProofList. (This returnes a vector of TimeProofTableBeans)So in the
html:text struts goes to element.getfromHour and gets the value ofthis fromHour
Property in the TimeProofTableBean.But I never could press submit to get the changes
fromHour´sNow I tried to give id the name of the get/set method of timeProofForm.
Andnow I could read my data back! It´s working. Here´s my
change:property=timeProofList maxlength=2 indexed=true/ Somehow I
didn´t understand really why it´s not working with any name on id(because this bean
scope is only valid in the actual jsp pagem isn´t it?)But if u take a look on the
generated html inputvalue=11It´s somehow logic, that it must work like this.
Because the timeProofListis the name of the get/set Method of the Formbean. So I want
to have theelement [0] ind this returned vedtor array. And from the element 0 I want
toget/set the fromHour property.I hope this also helps somebody.Take care
Michael--Fehlerfreie Software wirkt weniger komplex und diskreditiert damit
denEntwickler!- Original Message -From: Brian DeLuca To: Sent: Thursday,
December 12, 2002 11:53 PMSubject: RE: Struggling with indexed/repeating input fields
Michael, Please Let me know if something doesn't make sense. I have included mynotes
in a text file in case the formatting gets nasty. Enjoy b- I too have been
struggling with the same type of scenario. I have figured out a solution and
reasoned the problem so here goes. Please bearwith me. I hope others will benefit or
invalidate my solution. Setting up a logic iterate tag for this requires attributes
1 name -- In our case the name of the form 2 property -- the item that is an
ArrayList, [], or map etc... 3 id -- This is going to be the key for the item that
is set in a request attribute. Recommend using type attribute as well.
Our html input tag lets say in this a text tag requires name -- the bean whose
member we want to populate property -- the member to store the data. indexed --
Set to TRUE since we are iterating. This value is goingto be the index
value of the converted MAP, ArrayList Etc. Now lets create an example Item is a
class that only contains a string with appropriate get/set String item; FooBean has
a member Item [] fooBar; Our form FooForm has a member of type FooBean. FooBean
myInputRange; When one wants to create a JSP that uses FooForm and we need to ask
the users for values for myInputRange. To make it work will look like this in the
JSP. /* This seems ok right? Why do we need Class Item ? Why not a straightString
[] you ask. Good question it is answered in how you need to set upthe subsequent
Html:text tag */ Text tag: / This seems to be extreme. I agree but it works.
Let's go through why allthis madness. Most doc says that while iterating make
name=(Iterate id). That is finein bean write but not here. Html:text and other use
BaseTagField which willstart writing you Well that is just not good in the request
process
Struggling with indexed/repeating input fields
I saw a post in the thread
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234.html
I have the same problem and I can´t get it working. Perhaps someone can help me? It´d
be very nice.
I have the problems that the data in my formbean isn´t updated. I mean, I get the data
form my formbean in the jsp page. But when I edit it and press submit, it is not
updated. I get the same data as I got before.
Do you see perhaps an error? (I reviewed it now 7 hours with the sample source
attached in the upper thread, and I can´t find any error. Thank you)
It´s kind of urgent, because my thesis should be finished at the end of december.
Thanks
Take care Michael
**
This is my projekterfassung.jsp:
html:form action=saveProjekterfassung name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean
table width=100%
logic:iterate id=element indexId=listIdx name=timeProofForm property=vector
tr
td bean:write name=element property=date / /td
td html:text name=element property=fromHour size=2 maxlength=2
indexed=true/ : html:text name=element property=fromMinute size=2
maxlength=2 indexed=true/ /td
td html:text name=element property=toHour size=2 maxlength=2
indexed=true/ : html:text name=element property=toMinute size=2
maxlength=2 indexed=true/ /td
/logic:iterate
html:submit property=submit/
/html:form
**
My struts-config.xml:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration 1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
!-- == Data Source Configuration === --
!-- == Form Bean Definitions === --
form-beans
form-bean
name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean/
/form-beans
!-- == Global Forward Definitions == --
global-forwards
forward name=done path=/projekterfassung.jsp/
/global-forwards
!-- == Action Mapping Definitions == --
action-mappings
action path=/projekterfassung
type=de.proway.zerf.web.controller.ShowTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
action path=/saveProjekterfassung
type=de.proway.zerf.web.controller.SaveTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
actionpath=/admin/addFormBean
type=org.apache.struts.actions.AddFormBeanAction/
actionpath=/admin/addForward
type=org.apache.struts.actions.AddForwardAction/
actionpath=/admin/addMapping
type=org.apache.struts.actions.AddMappingAction/
actionpath=/admin/reload
type=org.apache.struts.actions.ReloadAction/
actionpath=/admin/removeFormBean
type=org.apache.struts.actions.RemoveFormBeanAction/
actionpath=/admin/removeForward
type=org.apache.struts.actions.RemoveForwardAction/
actionpath=/admin/removeMapping
type=org.apache.struts.actions.RemoveMappingAction/
/action-mappings
/struts-config
**
SaveTimeProofAction.java
package de.proway.zerf.web.controller;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import de.proway.zerf.web.bean.*;
import de.proway.zerf.app.controller.*;
import de.proway.zerf.web.util.*;
import de.proway.zerf.app.bean.*;
import java.util.*;
import java.text.*;
public final class SaveTimeProofAction extends LoginCheckAction {
public ActionForward perform( ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse res ) {
TimeProofFormBean tpf = (TimeProofFormBean) form;
System.out.println(tpf.toString());
System.out.println(tpf.getVector().toString());
for( int i=0; i tpf.getVector().size(); ++i ) {
System.out.println( ((TimeProofTableBean) tpf.getVector().get(i)).getDate()
);
System.out.println( ((TimeProofTableBean)
tpf.getVector().get(i)).getFromHour() );
System.out.println( ((TimeProofTableBean)
tpf.getVector().get(i)).getFromMinute() );
}
return mapping.findForward( done );
}
}
**
Show TimeProofAction.java
package de.proway.zerf.web.controller;
RE: Struggling with indexed/repeating input fields
I know this is confusing. I think the problem might be that you don't have an indexed
setter on TimeProofFormBean for the element property.
-Original Message-
From: Michael Olszynski [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 12, 2002 8:58 AM
To: [EMAIL PROTECTED]
Subject: Struggling with indexed/repeating input fields
I saw a post in the thread
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg
49234.html
I have the same problem and I can´t get it working. Perhaps
someone can help me? It´d be very nice.
I have the problems that the data in my formbean isn´t
updated. I mean, I get the data form my formbean in the jsp
page. But when I edit it and press submit, it is not updated.
I get the same data as I got before.
Do you see perhaps an error? (I reviewed it now 7 hours with
the sample source attached in the upper thread, and I can´t
find any error. Thank you)
It´s kind of urgent, because my thesis should be finished at
the end of december. Thanks
Take care Michael
**
This is my projekterfassung.jsp:
html:form action=saveProjekterfassung name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean
table width=100%
logic:iterate id=element indexId=listIdx
name=timeProofForm property=vector
tr
td bean:write name=element property=date / /td
td html:text name=element property=fromHour size=2
maxlength=2 indexed=true/ : html:text name=element
property=fromMinute size=2 maxlength=2 indexed=true/ /td
td html:text name=element property=toHour size=2
maxlength=2 indexed=true/ : html:text name=element
property=toMinute size=2 maxlength=2 indexed=true/ /td
/logic:iterate
html:submit property=submit/
/html:form
**
My struts-config.xml:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts
Configuration 1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
!-- == Data Source Configuration
=== --
!-- == Form Bean Definitions
=== --
form-beans
form-bean
name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean/
/form-beans
!-- == Global Forward Definitions
== --
global-forwards
forward name=done
path=/projekterfassung.jsp/
/global-forwards
!-- == Action Mapping Definitions
== --
action-mappings
action path=/projekterfassung
type=de.proway.zerf.web.controller.ShowTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
action path=/saveProjekterfassung
type=de.proway.zerf.web.controller.SaveTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
actionpath=/admin/addFormBean
type=org.apache.struts.actions.AddFormBeanAction/
actionpath=/admin/addForward
type=org.apache.struts.actions.AddForwardAction/
actionpath=/admin/addMapping
type=org.apache.struts.actions.AddMappingAction/
actionpath=/admin/reload
type=org.apache.struts.actions.ReloadAction/
actionpath=/admin/removeFormBean
type=org.apache.struts.actions.RemoveFormBeanAction/
actionpath=/admin/removeForward
type=org.apache.struts.actions.RemoveForwardAction/
actionpath=/admin/removeMapping
type=org.apache.struts.actions.RemoveMappingAction/
/action-mappings
/struts-config
**
SaveTimeProofAction.java
package de.proway.zerf.web.controller;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import de.proway.zerf.web.bean.*;
import de.proway.zerf.app.controller.*;
import de.proway.zerf.web.util.*;
import de.proway.zerf.app.bean.*;
import java.util.*;
import java.text.*;
public final class SaveTimeProofAction extends LoginCheckAction {
public ActionForward perform( ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse res ) {
TimeProofFormBean tpf = (TimeProofFormBean) form;
System.out.println(tpf.toString());
System.out.println(tpf.getVector().toString());
for( int i=0; i tpf.getVector().size(); ++i
Re: Struggling with indexed/repeating input fields
One (good) way is to have your beans implement collection.
Search messages for cekvenich, I posted like 3 of my last 10 messages
related to this.
.V
Michael Olszynski wrote:
I saw a post in the thread
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234.html
I have the same problem and I can´t get it working. Perhaps someone can help me? It´d be very nice.
I have the problems that the data in my formbean isn´t updated. I mean, I get the data form my formbean in the jsp page. But when I edit it and press submit, it is not updated. I get the same data as I got before.
Do you see perhaps an error? (I reviewed it now 7 hours with the sample source attached in the upper thread, and I can´t find any error. Thank you)
It´s kind of urgent, because my thesis should be finished at the end of december. Thanks
Take care Michael
**
This is my projekterfassung.jsp:
html:form action=saveProjekterfassung name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean
table width=100%
logic:iterate id=element indexId=listIdx name=timeProofForm property=vector
tr
td bean:write name=element property=date / /td
td html:text name=element property=fromHour size=2 maxlength=2 indexed=true/ : html:text name=element property=fromMinute size=2 maxlength=2 indexed=true/ /td
td html:text name=element property=toHour size=2 maxlength=2 indexed=true/ : html:text name=element property=toMinute size=2 maxlength=2 indexed=true/ /td
/logic:iterate
html:submit property=submit/
/html:form
**
My struts-config.xml:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration 1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
!-- == Data Source Configuration === --
!-- == Form Bean Definitions === --
form-beans
form-bean
name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean/
/form-beans
!-- == Global Forward Definitions == --
global-forwards
forward name=done path=/projekterfassung.jsp/
/global-forwards
!-- == Action Mapping Definitions == --
action-mappings
action path=/projekterfassung
type=de.proway.zerf.web.controller.ShowTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
action path=/saveProjekterfassung
type=de.proway.zerf.web.controller.SaveTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
actionpath=/admin/addFormBean
type=org.apache.struts.actions.AddFormBeanAction/
actionpath=/admin/addForward
type=org.apache.struts.actions.AddForwardAction/
actionpath=/admin/addMapping
type=org.apache.struts.actions.AddMappingAction/
actionpath=/admin/reload
type=org.apache.struts.actions.ReloadAction/
actionpath=/admin/removeFormBean
type=org.apache.struts.actions.RemoveFormBeanAction/
actionpath=/admin/removeForward
type=org.apache.struts.actions.RemoveForwardAction/
actionpath=/admin/removeMapping
type=org.apache.struts.actions.RemoveMappingAction/
/action-mappings
/struts-config
**
SaveTimeProofAction.java
package de.proway.zerf.web.controller;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import de.proway.zerf.web.bean.*;
import de.proway.zerf.app.controller.*;
import de.proway.zerf.web.util.*;
import de.proway.zerf.app.bean.*;
import java.util.*;
import java.text.*;
public final class SaveTimeProofAction extends LoginCheckAction {
public ActionForward perform( ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse res ) {
TimeProofFormBean tpf = (TimeProofFormBean) form;
System.out.println(tpf.toString());
System.out.println(tpf.getVector().toString());
for( int i=0; i tpf.getVector().size(); ++i ) {
System.out.println( ((TimeProofTableBean) tpf.getVector().get(i)).getDate() );
System.out.println( ((TimeProofTableBean) tpf.getVector().get(i)).getFromHour() );
System.out.println( ((TimeProofTableBean) tpf.getVector().get(i)).getFromMinute() );
}
return mapping.findForward( done );
}
}
Re: Struggling with indexed/repeating input fields
Yes it is really confusing. So you can´t find any other error? Okay. could you explain to me what u mean with that you don't have an indexed setter on TimeProofFormBean for the element property. I don´t really understand what you are talking about. Perhaps you could write one or two lines of code. Thanks a lot! Take care Michael -- Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den Entwickler! - Original Message - From: Karr, David [EMAIL PROTECTED] To: Struts Users Mailing List [EMAIL PROTECTED] Sent: Thursday, December 12, 2002 6:30 PM Subject: RE: Struggling with indexed/repeating input fields I know this is confusing. I think the problem might be that you don't have an indexed setter on TimeProofFormBean for the element property. -Original Message- From: Michael Olszynski [mailto:[EMAIL PROTECTED]] Sent: Thursday, December 12, 2002 8:58 AM To: [EMAIL PROTECTED] Subject: Struggling with indexed/repeating input fields I saw a post in the thread http://www.mail-archive.com/struts-user@jakarta.apache.org/msg 49234.html I have the same problem and I can´t get it working. Perhaps someone can help me? It´d be very nice. I have the problems that the data in my formbean isn´t updated. I mean, I get the data form my formbean in the jsp page. But when I edit it and press submit, it is not updated. I get the same data as I got before. Do you see perhaps an error? (I reviewed it now 7 hours with the sample source attached in the upper thread, and I can´t find any error. Thank you) It´s kind of urgent, because my thesis should be finished at the end of december. Thanks Take care Michael ** This is my projekterfassung.jsp: html:form action=saveProjekterfassung name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean table width=100% logic:iterate id=element indexId=listIdx name=timeProofForm property=vector tr td bean:write name=element property=date / /td td html:text name=element property=fromHour size=2 maxlength=2 indexed=true/ : html:text name=element property=fromMinute size=2 maxlength=2 indexed=true/ /td td html:text name=element property=toHour size=2 maxlength=2 indexed=true/ : html:text name=element property=toMinute size=2 maxlength=2 indexed=true/ /td /logic:iterate html:submit property=submit/ /html:form ** My struts-config.xml: ?xml version=1.0 encoding=ISO-8859-1 ? !DOCTYPE struts-config PUBLIC -//Apache Software Foundation//DTD Struts Configuration 1.0//EN http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd; struts-config !-- == Data Source Configuration === -- !-- == Form Bean Definitions === -- form-beans form-bean name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean/ /form-beans !-- == Global Forward Definitions == -- global-forwards forward name=done path=/projekterfassung.jsp/ /global-forwards !-- == Action Mapping Definitions == -- action-mappings action path=/projekterfassung type=de.proway.zerf.web.controller.ShowTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action action path=/saveProjekterfassung type=de.proway.zerf.web.controller.SaveTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action actionpath=/admin/addFormBean type=org.apache.struts.actions.AddFormBeanAction/ actionpath=/admin/addForward type=org.apache.struts.actions.AddForwardAction/ actionpath=/admin/addMapping type=org.apache.struts.actions.AddMappingAction/ actionpath=/admin/reload type=org.apache.struts.actions.ReloadAction/ actionpath=/admin/removeFormBean type=org.apache.struts.actions.RemoveFormBeanAction/ actionpath=/admin/removeForward type=org.apache.struts.actions.RemoveForwardAction/ actionpath=/admin/removeMapping type=org.apache.struts.actions.RemoveMappingAction/ /action-mappings /struts-config ** SaveTimeProofAction.java package de.proway.zerf.web.controller; import javax.servlet.http.*; import org.apache.struts.action.*; import de.proway.zerf.web.bean.*; import de.proway.zerf.app.controller.*; import de.proway.zerf.web.util.*; import
Re: Struggling with indexed/repeating input fields in forms
That didn´t help.But thanks eitherway.
Does anyone have a clue what could be wrong?
Any ideas are welcome!
--
Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den
Entwickler!
- Original Message -
From: V. Cekvenich [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, December 12, 2002 6:56 PM
Subject: Re: Struggling with indexed/repeating input fields
One (good) way is to have your beans implement collection.
Search messages for cekvenich, I posted like 3 of my last 10 messages
related to this.
.V
Michael Olszynski wrote:
I saw a post in the thread
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234.html
I have the same problem and I can´t get it working. Perhaps someone can
help me? It´d be very nice.
I have the problems that the data in my formbean isn´t updated. I mean,
I get the data form my formbean in the jsp page. But when I edit it and
press submit, it is not updated. I get the same data as I got before.
Do you see perhaps an error? (I reviewed it now 7 hours with the sample
source attached in the upper thread, and I can´t find any error. Thank you)
It´s kind of urgent, because my thesis should be finished at the end of
december. Thanks
Take care Michael
**
This is my projekterfassung.jsp:
html:form action=saveProjekterfassung name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean
table width=100%
logic:iterate id=element indexId=listIdx name=timeProofForm
property=vector
tr
td bean:write name=element property=date / /td
td html:text name=element property=fromHour size=2
maxlength=2 indexed=true/ : html:text name=element
property=fromMinute size=2 maxlength=2 indexed=true/ /td
td html:text name=element property=toHour size=2
maxlength=2 indexed=true/ : html:text name=element
property=toMinute size=2 maxlength=2 indexed=true/ /td
/logic:iterate
html:submit property=submit/
/html:form
**
My struts-config.xml:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration
1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
!-- == Data Source Configuration
=== --
!-- == Form Bean Definitions
=== --
form-beans
form-bean
name=timeProofForm
type=de.proway.zerf.web.bean.TimeProofFormBean/
/form-beans
!-- == Global Forward Definitions
== --
global-forwards
forward name=done path=/projekterfassung.jsp/
/global-forwards
!-- == Action Mapping Definitions
== --
action-mappings
action path=/projekterfassung
type=de.proway.zerf.web.controller.ShowTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
action path=/saveProjekterfassung
type=de.proway.zerf.web.controller.SaveTimeProofAction
name=timeProofForm
scope=request
input=/projekterfassung.jsp
/action
actionpath=/admin/addFormBean
type=org.apache.struts.actions.AddFormBeanAction/
actionpath=/admin/addForward
type=org.apache.struts.actions.AddForwardAction/
actionpath=/admin/addMapping
type=org.apache.struts.actions.AddMappingAction/
actionpath=/admin/reload
type=org.apache.struts.actions.ReloadAction/
actionpath=/admin/removeFormBean
type=org.apache.struts.actions.RemoveFormBeanAction/
actionpath=/admin/removeForward
type=org.apache.struts.actions.RemoveForwardAction/
actionpath=/admin/removeMapping
type=org.apache.struts.actions.RemoveMappingAction/
/action-mappings
/struts-config
**
SaveTimeProofAction.java
package de.proway.zerf.web.controller;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import de.proway.zerf.web.bean.*;
import de.proway.zerf.app.controller.*;
import de.proway.zerf.web.util.*;
import de.proway.zerf.app.bean.*;
import java.util.*;
import java.text.*;
public final class SaveTimeProofAction extends LoginCheckAction {
public ActionForward perform( ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse res
RE: Struggling with indexed/repeating input fields
Michael, Please Let me know if something doesn't make sense. I have included my notes in a text file in case the formatting gets nasty. Enjoy b- I too have been struggling with the same type of scenario. I have figured out a solution and reasoned the problem so here goes. Please bear with me. I hope others will benefit or invalidate my solution. Setting up a logic iterate tag for this requires attributes 1 name -- In our case the name of the form 2 property -- the item that is an ArrayList, [], or map etc... 3 id -- This is going to be the key for the item that is set in a request attribute. Recommend using type attribute as well. Our html input tag lets say in this a text tag requires name -- the bean whose member we want to populate property -- the member to store the data. indexed -- Set to TRUE since we are iterating. This value is going to be the index value of the converted MAP, ArrayList Etc. Now lets create an example Item is a class that only contains a string with appropriate get/set String item; FooBean has a member Item [] fooBar; Our form FooForm has a member of type FooBean. FooBean myInputRange; When one wants to create a JSP that uses FooForm and we need to ask the users for values for myInputRange. To make it work will look like this in the JSP. /* This seems ok right? Why do we need Class Item ? Why not a straight String [] you ask. Good question it is answered in how you need to set up the subsequent Html:text tag */ Text tag: / This seems to be extreme. I agree but it works. Let's go through why all this madness. Most doc says that while iterating make name=(Iterate id). That is fine in bean write but not here. Html:text and other use BaseTagField which will start writing you Well that is just not good in the request process the method populatebean has no concept of anItem, It is not defined in the form so it won't populate it, in fact you will never know it is not a hard error, the processor just keeps going and forgets it. The next interesting piece here is the fact that you need some wrapper class for String []. Why? Simple when you hear it, There is *NO* getter/Setter for a String. Make Sense? And you need the property attribute in HTML:TEXT tag (TLD Rule -- REQUIRED) I tried tricking it by using property= That doesn't help. because the resulting html will look like this. NOTICE: the . after the index -- Throws off the populate bean process also with no hard errors. Finally Why do we have to use scriptlet for the value? This is a pain in the butt, but here goes. The HTML:Text tag will figure out what the value is if it is not present, but in our case it doesn't work. Since our namefooBean.fooBar is not in the PageContext and if value is null it makes a call to RequestUtils.lookup( param's ) which ultimately makes a call to findAttribute(name) which returns null and throws a JSP exception. However if you use the id from the logic:iterate it will find the context and work, but alas it will not populate your form. So to work around this we add a value attribute. This prevents the lookup unfortnately we cannot see what the true value is without using scriplet Why do we have yo use sciptlet -- Beacause the tag will not try an evaluate the value of the value tag so it must be done before hand with scriptlet. Please let me know if there is some flaw in my process because I don't like the solution seems messy since I have to create wrapper classes of all String items that I normally would put in an array. regards Brian DeLuca [EMAIL PROTECTED] --- On Thu 12/12, Michael Olszynski wrote:From: Michael Olszynski [mailto: [EMAIL PROTECTED]]To: [EMAIL PROTECTED]: Thu, 12 Dec 2002 17:57:42 +0100Subject: Struggling with indexed/repeating input fieldsI saw a post in the thread http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234.htmlI have the same problem and I can´t get it working. Perhaps someone can help me? It´d be very nice.I have the problems that the data in my formbean isn´t updated. I mean, I get the data form my formbean in the jsp page. But when I edit it and press submit, it is not updated. I get the same data as I got before.Do you see perhaps an error? (I reviewed it now 7 hours with the sample source attached in the upper thread, and I can´t find any error. Thank you)It´s kind of urgent, because my thesis should be finished at the end of december. ThanksTake care Michael**This is my projekterfassung.jsp::: **My struts-config.xml: -//Apache Software Foundation//DTD Struts Configuration 1.0//EN
RE: Struggling with indexed/repeating input fields in forms
Michael, May be you can try using Nested iterate tag + Nested text tag to populate the indexed fields. I Have successfully done this. If you need further clarification, please email me. Regards, Stephen -Original Message- From: Michael Olszynski [mailto:[EMAIL PROTECTED]] Sent: 13 December 2002 04:21 To: Struts Users Mailing List Subject: Re: Struggling with indexed/repeating input fields in forms That didn´t help.But thanks eitherway. Does anyone have a clue what could be wrong? Any ideas are welcome! -- Fehlerfreie Software wirkt weniger komplex und diskreditiert damit den Entwickler! - Original Message - From: V. Cekvenich [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, December 12, 2002 6:56 PM Subject: Re: Struggling with indexed/repeating input fields One (good) way is to have your beans implement collection. Search messages for cekvenich, I posted like 3 of my last 10 messages related to this. .V Michael Olszynski wrote: I saw a post in the thread http://www.mail-archive.com/struts-user@jakarta.apache.org/msg49234. html I have the same problem and I can´t get it working. Perhaps someone can help me? It´d be very nice. I have the problems that the data in my formbean isn´t updated. I mean, I get the data form my formbean in the jsp page. But when I edit it and press submit, it is not updated. I get the same data as I got before. Do you see perhaps an error? (I reviewed it now 7 hours with the sample source attached in the upper thread, and I can´t find any error. Thank you) It´s kind of urgent, because my thesis should be finished at the end of december. Thanks Take care Michael ** ** ** This is my projekterfassung.jsp: html:form action=saveProjekterfassung name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean table width=100% logic:iterate id=element indexId=listIdx name=timeProofForm property=vector tr td bean:write name=element property=date / /td td html:text name=element property=fromHour size=2 maxlength=2 indexed=true/ : html:text name=element property=fromMinute size=2 maxlength=2 indexed=true/ /td td html:text name=element property=toHour size=2 maxlength=2 indexed=true/ : html:text name=element property=toMinute size=2 maxlength=2 indexed=true/ /td /logic:iterate html:submit property=submit/ /html:form ** ** ** My struts-config.xml: ?xml version=1.0 encoding=ISO-8859-1 ? !DOCTYPE struts-config PUBLIC -//Apache Software Foundation//DTD Struts Configuration 1.0//EN http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd; struts-config !-- == Data Source Configuration === -- !-- == Form Bean Definitions === -- form-beans form-bean name=timeProofForm type=de.proway.zerf.web.bean.TimeProofFormBean/ /form-beans !-- == Global Forward Definitions == -- global-forwards forward name=done path=/projekterfassung.jsp/ /global-forwards !-- == Action Mapping Definitions == -- action-mappings action path=/projekterfassung type=de.proway.zerf.web.controller.ShowTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action action path=/saveProjekterfassung type=de.proway.zerf.web.controller.SaveTimeProofAction name=timeProofForm scope=request input=/projekterfassung.jsp /action actionpath=/admin/addFormBean type=org.apache.struts.actions.AddFormBeanAction/ actionpath=/admin/addForward type=org.apache.struts.actions.AddForwardAction/ actionpath=/admin/addMapping type=org.apache.struts.actions.AddMappingAction/ actionpath=/admin/reload type=org.apache.struts.actions.ReloadAction/ actionpath=/admin/removeFormBean type=org.apache.struts.actions.RemoveFormBeanAction/ actionpath=/admin/removeForward type=org.apache.struts.actions.RemoveForwardAction/ actionpath=/admin/removeMapping type=org.apache.struts.actions.RemoveMappingAction/ /action-mappings /struts-config
Re: struggling with indexed/repeating input fields
From: Leonardo Maciel [EMAIL PROTECTED] I GOT IT! I forgot to send the struts-config.xml and there were the difference VERY-IMPORTANT if I set the action scope=request I get: javax.servlet.ServletException: BeanUtils.populate ... Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0 or Caused by: java.lang.NullPointerException make sure you don't have scope=request in your action ... /action /VERY-IMPORTANT You have really made my day!!! Thanks. I took the code you gave me and the code from the original link (yes, thanks Dave). I couldn't get either of them to work since I just automatically put in the scope=request into the configuration entry. I was getting a similar error message: javax.servlet.ServletException: BeanUtils.populate at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:980) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:779) ... - Root Cause - java.lang.ArrayIndexOutOfBoundsException: 0 = 0 at java.util.Vector.elementAt(Vector.java:427) Which is similar to every other attempt I've made. The array/vector/list/collection wasn't initialized to have the correct size before the indexed setters were called. I kind of consider it to be a bug in BeanUtils but I'm not sure. It would never have occurred to me that the scope would effect it. As soon as I made that change and restarted, it worked! I've not tried the nested tags but I suspect the crucial element is the scope of the form bean. I do agree with [EMAIL PROTECTED] about having to put the bean into session scope - I'll have to manage that very carefully or implement the indexed setter that you gave and that Jim Krygowski mentioned. I'll also look at the lazyList from Commons Collection. Thanks again! Also, thanks to everyone else who helped. Kevin. __ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
struggling with indexed/repeating input fields
I've asked this question several times on this mailing list but I've never received an answer that would help. I've dug a bit deeper and understand more about the problem but I'm still really struggling with indexed/repeating input fields so I thought I'd ask again. I'm starting to wonder if it is possible. In my ActionForm I have an array property that is initialized to null (I don't know the values until the Action executes). I have a getter that returns the entire array and a setter that takes an array. I also have indexed getters and setters. The array is of another class (that simply has two strings in it with the default/empty constructor and getters and setters). In my (edit) action I construct an array and call the setter in the action form instance (that I just created). I then forward to a JSP page that has a logic:iterate tag and html:text tags all within a form tag. The form has a html:submit that calls my save action. The save action simply forwards to a confirmation JSP page that has a similar iteration to display the input values. The initial edit form gets displayed properly - the expected number of iterations are performed and the expected values of the input fields is shown. When I press the submit button things break. I know that isn't terribly descriptive but how it breaks depends on how I form the html:text tags - there are two cases that I've tried. In the first case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem html:text name=li property=itemNo indexed=true/ html:text name=li property=desc indexed=true/ /logic:iterate As I said, it displays properly. I change the desc text and hit the submit button and end up getting an exception: ApplicationDispatcher[/cml] Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: No collection found In the save action I printed the toString() of the input form before forwarding to the JSP page and can see that the array is in fact null. Why is it null? Who is responsible for instantiating an array for that field - struts or the application? If it is the application, how can it know how big to make the array? In the second case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem indexId=i % String prop1 = lineItem[ + i + ].itemNo; % html:text property=%= prop1 % size=30/ % String prop2 = lineItem[ + i + ].desc; % html:text property=%= prop2 % size=30/ /logic:iterate Again, it displays properly. I change the desc text and hit the submit button and end up getting an exception: StandardWrapperValve[action]: Servlet.service() for servlet action threw exception javax.servlet.ServletException: BeanUtils.populate ... Caused by: java.lang.NullPointerException at com.illuminat.cml.IndexedForm.getLineItem(IndexedForm.java:286) This happens even before it calls the save action. So, I'm at a loss as to how to handle indexed or repeating fields. I've looked at the code in html-setters.jsp and TestBean from the exercise-taglib in the distribution but that uses fixed size arrays and static initializers. It hasn't been simple to go from that to a variable number of array elements and non-static (from a database) initialization. I've also looked in the archives and on the current mailing list and found nothing. Actually, I've been seeing more questions regarding indexed properties lately (mostly using DynaBeans) but they are generally going un-answered or not coming up with solutions, just more questions. This is not a complaint as I know everyone is very busy but it does mean that I've not found anything in the archives. Help would be most appreciated. Sample code would be even nicer! Is it even possible with Struts (version 1.1b2)? I can furnish code or a better explaination if needed. Kevin __ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: struggling with indexed/repeating input fields
Kevin, I finally got logic:iterate ... html:text ... indexed=true/ ... /logic:iterate to work. The sample code came from http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html Thank you Dave. I built Dave's code on top of struts-example. All necessary code is attached. On the index.jsp page there are two links html:link page=/indexed.doIterate html:text indexed example/html:link html:link page=/ShowParameters.doFrom Dave Iterate html:text indexed example/html:link The first one, indexed.do, doesn't work. Gives IndexOutOfBoundException. The second, ShowParameters.do, works. :D I still trying to figure out the differences between those two... Good luck! Leo From: Kevin HaleBoyes [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: struggling with indexed/repeating input fields Date: Tue, 19 Nov 2002 07:10:15 -0800 (PST) I've asked this question several times on this mailing list but I've never received an answer that would help. I've dug a bit deeper and understand more about the problem but I'm still really struggling with indexed/repeating input fields so I thought I'd ask again. I'm starting to wonder if it is possible. In my ActionForm I have an array property that is initialized to null (I don't know the values until the Action executes). I have a getter that returns the entire array and a setter that takes an array. I also have indexed getters and setters. The array is of another class (that simply has two strings in it with the default/empty constructor and getters and setters). In my (edit) action I construct an array and call the setter in the action form instance (that I just created). I then forward to a JSP page that has a logic:iterate tag and html:text tags all within a form tag. The form has a html:submit that calls my save action. The save action simply forwards to a confirmation JSP page that has a similar iteration to display the input values. The initial edit form gets displayed properly - the expected number of iterations are performed and the expected values of the input fields is shown. When I press the submit button things break. I know that isn't terribly descriptive but how it breaks depends on how I form the html:text tags - there are two cases that I've tried. In the first case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem html:text name=li property=itemNo indexed=true/ html:text name=li property=desc indexed=true/ /logic:iterate As I said, it displays properly. I change the desc text and hit the submit button and end up getting an exception: ApplicationDispatcher[/cml] Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: No collection found In the save action I printed the toString() of the input form before forwarding to the JSP page and can see that the array is in fact null. Why is it null? Who is responsible for instantiating an array for that field - struts or the application? If it is the application, how can it know how big to make the array? In the second case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem indexId=i % String prop1 = lineItem[ + i + ].itemNo; % html:text property=%= prop1 % size=30/ % String prop2 = lineItem[ + i + ].desc; % html:text property=%= prop2 % size=30/ /logic:iterate Again, it displays properly. I change the desc text and hit the submit button and end up getting an exception: StandardWrapperValve[action]: Servlet.service() for servlet action threw exception javax.servlet.ServletException: BeanUtils.populate ... Caused by: java.lang.NullPointerException at com.illuminat.cml.IndexedForm.getLineItem(IndexedForm.java:286) This happens even before it calls the save action. So, I'm at a loss as to how to handle indexed or repeating fields. I've looked at the code in html-setters.jsp and TestBean from the exercise-taglib in the distribution but that uses fixed size arrays and static initializers. It hasn't been simple to go from that to a variable number of array elements and non-static (from a database) initialization. I've also looked in the archives and on the current mailing list and found nothing. Actually, I've been seeing more questions regarding indexed properties lately (mostly using DynaBeans) but they are generally going un-answered or not coming up with solutions, just more questions. This is not a complaint as I know everyone is very busy but it does mean that I've not found anything in the archives. Help would be most appreciated. Sample code would be even nicer! Is it even possible with Struts (version 1.1b2)? I can furnish code or a better explaination if needed. Kevin __ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com
Re: struggling with indexed/repeating input fields
Hi Kevin, I struggled for the last two days on the indexed property and now I have it working. Here is what I did: MyFormBean: Object[] items MyData getItem(int) void setItem(int, Object) Object[] getItems() MyData: String name String address String getName() void setName(String) String getAddress() void setAddress(String) Defined MyFormBean in struts-config.xml Defined MyAction that utilizes the MyFormBean JSP page nested:form action=myAction nested:iterate propery=items nested:text property=name nested:text propery=address You should not define the attribute indexed on the nested:text, if you do it generates the following HTML MyFormBean[i].items[i].name which is incorrect. The correct HTML generation is items[i].name items[i].address Also if you add id attribute to the form, it messes up everything. Let me know if this works Kevin wrote: I've asked this question several times on this mailing list but I've never received an answer that would help. I've dug a bit deeper and understand more about the problem but I'm still really struggling with indexed/repeating input fields so I thought I'd ask again. I'm starting to wonder if it is possible. In my ActionForm I have an array property that is initialized to null (I don't know the values until the Action executes). I have a getter that returns the entire array and a setter that takes an array. I also have indexed getters and setters. The array is of another class (that simply has two strings in it with the default/empty constructor and getters and setters). In my (edit) action I construct an array and call the setter in the action form instance (that I just created). I then forward to a JSP page that has a logic:iterate tag and html:text tags all within a form tag. The form has a html:submit that calls my save action. The save action simply forwards to a confirmation JSP page that has a similar iteration to display the input values. The initial edit form gets displayed properly - the expected number of iterations are performed and the expected values of the input fields is shown. When I press the submit button things break. I know that isn't terribly descriptive but how it breaks depends on how I form the html:text tags - there are two cases that I've tried. In the first case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem html:text name=li property=itemNo indexed=true/ html:text name=li property=desc indexed=true/ /logic:iterate As I said, it displays properly. I change the desc text and hit the submit button and end up getting an exception: ApplicationDispatcher[/cml] Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: No collection found In the save action I printed the toString() of the input form before forwarding to the JSP page and can see that the array is in fact null. Why is it null? Who is responsible for instantiating an array for that field - struts or the application? If it is the application, how can it know how big to make the array? In the second case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem indexId=i % String prop1 = lineItem[ + i + ].itemNo; % html:text property=%= prop1 % size=30/ % String prop2 = lineItem[ + i + ].desc; % html:text property=%= prop2 % size=30/ /logic:iterate Again, it displays properly. I change the desc text and hit the submit button and end up getting an exception: StandardWrapperValve[action]: Servlet.service() for servlet action threw exception javax.servlet.ServletException: BeanUtils.populate ... Caused by: java.lang.NullPointerException at com.illuminat.cml.IndexedForm.getLineItem(IndexedForm.java:286) This happens even before it calls the save action. So, I'm at a loss as to how to handle indexed or repeating fields. I've looked at the code in html-setters.jsp and TestBean from the exercise-taglib in the distribution but that uses fixed size arrays and static initializers. It hasn't been simple to go from that to a variable number of array elements and non-static (from a database) initialization. I've also looked in the archives and on the current mailing list and found nothing. Actually, I've been seeing more questions regarding indexed properties lately (mostly using DynaBeans) but they are generally going un-answered or not coming up with solutions, just more questions. This is not a complaint as I know everyone is very busy but it does mean that I've not found anything in the archives. Help would be most appreciated. Sample code would be even nicer! Is it even possible with Struts (version 1.1b2)? I can furnish code or a better explaination if needed. Kevin |- |(Embedded| |image moved | |to file: | |pic30735.pcx
RE: struggling with indexed/repeating input fields
Greetings Kevin, For me the iterate tag is working. But I have a problem. My requirement is, I will show a list, from which I will be selecting a particular detail and click on edit in the same row. This will take some of the values in that row and pass it on to the next jsp/action. I am unable to get it working. My iterate tag is working with indexed property and the html generated also has items[i].name But I am unable to get the value of the item in the selected row. Can you tell me how to get them! Thanx in advance regards, Dinesh Samson J -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: struggling with indexed/repeating input fields
can you please explain the problem preperly? If u are showing the list using html:text and pressing submitting button then there is no reason why the values will not be passed over.But as u are on the same form , all the rows will be submitted instead of just the one from where the button is pressed. So is this u r probvloem that u just want the data from selected row but getting all the data?ansd dont know how to get just the selected rows data? -Original Message- From: dinesh.samson [mailto:[EMAIL PROTECTED]] Sent: Tuesday, November 19, 2002 5:16 PM To: struts-user Subject: RE: struggling with indexed/repeating input fields Greetings Kevin, For me the iterate tag is working. But I have a problem. My requirement is, I will show a list, from which I will be selecting a particular detail and click on edit in the same row. This will take some of the values in that row and pass it on to the next jsp/action. I am unable to get it working. My iterate tag is working with indexed property and the html generated also has items[i].name But I am unable to get the value of the item in the selected row. Can you tell me how to get them! Thanx in advance regards, Dinesh Samson J -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: struggling with indexed/repeating input fields
I GOT IT! I forgot to send the struts-config.xml and there were the difference VERY-IMPORTANT if I set the action scope=request I get: javax.servlet.ServletException: BeanUtils.populate ... Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0 or Caused by: java.lang.NullPointerException make sure you don't have scope=request in your action ... /action /VERY-IMPORTANT === my struts-config.xml === form-beans ... form-bean name=IndexedForm type=test.IndexedForm / form-bean name=ParametersForm type=test.ParametersForm / /form-beans ... action path=/indexed type=test.IndexedAction name=IndexedForm validate=false forward name=success path=/indexed.jsp/ /action action path=/indexedResult type=test.IndexedResultAction name=IndexedForm validate=false forward name=success path=/indexedResult.jsp/ /action action path=/ShowParameters type=test.ShowParametersAction name=ParametersForm validate=false forward name=success path=/parameters.jsp / /action !-- Save parameters -- action path=/SaveParameters type=test.SaveParametersAction name=ParametersForm validate=false forward name=success path=/indextest.jsp / /action === Try it out. Cheers, Leo From: Leonardo Maciel [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: struggling with indexed/repeating input fields Date: Tue, 19 Nov 2002 15:33:04 + Kevin, I finally got logic:iterate ... html:text ... indexed=true/ ... /logic:iterate to work. The sample code came from http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html Thank you Dave. I built Dave's code on top of struts-example. All necessary code is attached. On the index.jsp page there are two links html:link page=/indexed.doIterate html:text indexed example/html:link html:link page=/ShowParameters.doFrom Dave Iterate html:text indexed example/html:link The first one, indexed.do, doesn't work. Gives IndexOutOfBoundException. The second, ShowParameters.do, works. :D I still trying to figure out the differences between those two... Good luck! Leo From: Kevin HaleBoyes [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: struggling with indexed/repeating input fields Date: Tue, 19 Nov 2002 07:10:15 -0800 (PST) I've asked this question several times on this mailing list but I've never received an answer that would help. I've dug a bit deeper and understand more about the problem but I'm still really struggling with indexed/repeating input fields so I thought I'd ask again. I'm starting to wonder if it is possible. In my ActionForm I have an array property that is initialized to null (I don't know the values until the Action executes). I have a getter that returns the entire array and a setter that takes an array. I also have indexed getters and setters. The array is of another class (that simply has two strings in it with the default/empty constructor and getters and setters). In my (edit) action I construct an array and call the setter in the action form instance (that I just created). I then forward to a JSP page that has a logic:iterate tag and html:text tags all within a form tag. The form has a html:submit that calls my save action. The save action simply forwards to a confirmation JSP page that has a similar iteration to display the input values. The initial edit form gets displayed properly - the expected number of iterations are performed and the expected values of the input fields is shown. When I press the submit button things break. I know that isn't terribly descriptive but how it breaks depends on how I form the html:text tags - there are two cases that I've tried. In the first case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem html:text name=li property=itemNo indexed=true/ html:text name=li property=desc indexed=true/ /logic:iterate As I said, it displays properly. I change the desc text and hit the submit button and end up getting an exception: ApplicationDispatcher[/cml] Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: No collection found In the save action I printed the toString() of the input form before forwarding to the JSP page and can see that the array is in fact null. Why is it null? Who is responsible for instantiating an array for that field - struts or the application? If it is the application, how can it know how big to make the array? In the second case, I use the following in the edit JSP form: logic:iterate id=li name=IndexedForm property=lineItem indexId=i % String prop1 = lineItem[ + i + ].itemNo; % html:text property=%= prop1 % size=30/ % String prop2 = lineItem[ + i + ].desc; % html:text property=%= prop2 % size=30/ /logic:iterate Again, it displays properly. I change
RE: Re: struggling with indexed/repeating input fields
HI,
I think u are suggesting that every form has to be in session scope which is
dangerous and will unnecessarily clog the session object.
If u have problems when calling setters on u r form because the list on form is
smaller, i will suggest following approach.
public class MyForm {
private List objectList = new ArrayList();
//use arrayList instead of array as it does not force u to declare size
public Object getObject(index i){
while(index = this.getList().size() ){
this.getList().add(new Object());
}
return this.getList().getObject(index);
}
}
So in this case, when the setter is called,the form will be added with bean
first nd then the setter will be called.
Try this approach and let me know.
Regards,
Shirish
-Original Message-
From: leomaciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 5:43 PM
To: struts-user
Cc: leomaciel
Subject: Re: struggling with indexed/repeating input fields
I GOT IT!
I forgot to send the struts-config.xml and there were the difference
VERY-IMPORTANT
if I set the action scope=request I get:
javax.servlet.ServletException: BeanUtils.populate
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0
or
Caused by: java.lang.NullPointerException
make sure you don't have scope=request in your action ... /action
/VERY-IMPORTANT
=== my struts-config.xml ===
form-beans
...
form-bean name=IndexedForm type=test.IndexedForm /
form-bean name=ParametersForm type=test.ParametersForm /
/form-beans
...
action path=/indexed
type=test.IndexedAction
name=IndexedForm
validate=false
forward name=success path=/indexed.jsp/
/action
action path=/indexedResult
type=test.IndexedResultAction
name=IndexedForm
validate=false
forward name=success path=/indexedResult.jsp/
/action
action
path=/ShowParameters
type=test.ShowParametersAction
name=ParametersForm
validate=false
forward name=success path=/parameters.jsp /
/action
!-- Save parameters --
action
path=/SaveParameters
type=test.SaveParametersAction
name=ParametersForm
validate=false
forward name=success path=/indextest.jsp /
/action
===
Try it out.
Cheers,
Leo
From: Leonardo Maciel [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 15:33:04 +
Kevin,
I finally got
logic:iterate ... html:text ... indexed=true/ ... /logic:iterate
to work.
The sample code came from
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html
Thank you Dave.
I built Dave's code on top of struts-example. All necessary code is
attached.
On the index.jsp page there are two links
html:link page=/indexed.doIterate html:text indexed example/html:link
html:link page=/ShowParameters.doFrom Dave Iterate html:text indexed
example/html:link
The first one, indexed.do, doesn't work. Gives IndexOutOfBoundException.
The second, ShowParameters.do, works. :D
I still trying to figure out the differences between those two...
Good luck!
Leo
From: Kevin HaleBoyes [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 07:10:15 -0800 (PST)
I've asked this question several times on this mailing list but
I've never received an answer that would help. I've dug a bit
deeper and understand more about the problem but I'm still really
struggling with indexed/repeating input fields so I thought I'd
ask again. I'm starting to wonder if it is possible.
In my ActionForm I have an array property that is initialized to
null (I don't know the values until the Action executes).
I have a getter
that returns the entire array and a setter that takes an array.
I also have indexed getters and setters. The array is of another
class (that simply has two strings in it with the default/empty
constructor and getters and setters).
In my (edit) action I construct an array and call the setter in the
action form instance (that I just created). I then forward to a JSP
page that has a logic:iterate tag and html:text tags all within
a form tag. The form has a html:submit that calls my save action.
The save action simply forwards to a confirmation JSP page that
has a similar iteration to display the input values.
The initial edit form gets displayed properly - the expected
number of iterations are performed and the expected values of the
input fields is shown. When I press the submit button things break.
I know that isn't terribly descriptive but how it breaks depends
on how I form the html:text tags - there are two cases that I've
tried.
In the first case, I use the following in the edit JSP
RE: Re: struggling with indexed/repeating input fields
I wish I had another solution to the problem.
I am using ArrayList and it is initialized on IndexedAction (see attached)
=
for ( int i=0; i10; i++ ) {
NameValue nv = new NameValue( ,new Integer(i) );
al.add( nv );
}
=
The values show on the page. But when you submit the form, the ArrayList
vanish.
Where is the ArrayList size 10 initialize ?
The exception happens on BeanUtils.populate before execute the submit
action.
If you can make the code attached work with scope=request I will be
surprised
Please take a look in the code before suggested what is already implemented.
Thank you,
Leo
From: [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 17:52:52 +0100
HI,
I think u are suggesting that every form has to be in session scope which
is
dangerous and will unnecessarily clog the session object.
If u have problems when calling setters on u r form because the list on
form is
smaller, i will suggest following approach.
public class MyForm {
private List objectList = new ArrayList();
//use arrayList instead of array as it does not force u to declare size
public Object getObject(index i){
while(index = this.getList().size() ){
this.getList().add(new Object());
}
return this.getList().getObject(index);
}
}
So in this case, when the setter is called,the form will be added with bean
first nd then the setter will be called.
Try this approach and let me know.
Regards,
Shirish
-Original Message-
From: leomaciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 5:43 PM
To: struts-user
Cc: leomaciel
Subject: Re: struggling with indexed/repeating input fields
I GOT IT!
I forgot to send the struts-config.xml and there were the difference
VERY-IMPORTANT
if I set the action scope=request I get:
javax.servlet.ServletException: BeanUtils.populate
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0
or
Caused by: java.lang.NullPointerException
make sure you don't have scope=request in your action ... /action
/VERY-IMPORTANT
=== my struts-config.xml ===
form-beans
...
form-bean name=IndexedForm type=test.IndexedForm /
form-bean name=ParametersForm type=test.ParametersForm /
/form-beans
...
action path=/indexed
type=test.IndexedAction
name=IndexedForm
validate=false
forward name=success path=/indexed.jsp/
/action
action path=/indexedResult
type=test.IndexedResultAction
name=IndexedForm
validate=false
forward name=success path=/indexedResult.jsp/
/action
action
path=/ShowParameters
type=test.ShowParametersAction
name=ParametersForm
validate=false
forward name=success path=/parameters.jsp /
/action
!-- Save parameters --
action
path=/SaveParameters
type=test.SaveParametersAction
name=ParametersForm
validate=false
forward name=success path=/indextest.jsp /
/action
===
Try it out.
Cheers,
Leo
From: Leonardo Maciel [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 15:33:04 +
Kevin,
I finally got
logic:iterate ... html:text ... indexed=true/ ... /logic:iterate
to work.
The sample code came from
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html
Thank you Dave.
I built Dave's code on top of struts-example. All necessary code is
attached.
On the index.jsp page there are two links
html:link page=/indexed.doIterate html:text indexed
example/html:link
html:link page=/ShowParameters.doFrom Dave Iterate html:text indexed
example/html:link
The first one, indexed.do, doesn't work. Gives IndexOutOfBoundException.
The second, ShowParameters.do, works. :D
I still trying to figure out the differences between those two...
Good luck!
Leo
From: Kevin HaleBoyes [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 07:10:15 -0800 (PST)
I've asked this question several times on this mailing list but
I've never received an answer that would help. I've dug a bit
deeper and understand more about the problem but I'm still really
struggling with indexed/repeating input fields so I thought I'd
ask again. I'm starting to wonder if it is possible.
In my ActionForm I have an array property that is initialized to
null (I don't know the values until the Action executes).
I have a getter
that returns the entire array and a setter that takes an array.
I also have indexed getters and setters. The array is of another
class (that simply has two strings in it with the default/empty
constructor and getters and setters).
In my (edit) action I construct an array and call the setter in the
action form instance (that I just created). I then forward to a JSP
RE: Re: struggling with indexed/repeating input fields
Leo,
I don't know if this will help, but we experienced a similar issue. I do
believe you are right: it is an artifact of a Request scoped ActionForm.
Our solution was to modify the indexed getters and setters so that they
automatically sized the the internal array list representation upon request.
This approach eliminated the IndexOutOfBoundsError on submit of our form.
-Original Message-
From: Leonardo Maciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 12:18 PM
To: [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
I wish I had another solution to the problem.
I am using ArrayList and it is initialized on IndexedAction (see attached)
=
for ( int i=0; i10; i++ ) {
NameValue nv = new NameValue( ,new Integer(i) );
al.add( nv );
}
=
The values show on the page. But when you submit the form, the ArrayList
vanish.
Where is the ArrayList size 10 initialize ?
The exception happens on BeanUtils.populate before execute the submit
action.
If you can make the code attached work with scope=request I will be
surprised
Please take a look in the code before suggested what is already
implemented.
Thank you,
Leo
From: [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 17:52:52 +0100
HI,
I think u are suggesting that every form has to be in session
scope which
is
dangerous and will unnecessarily clog the session object.
If u have problems when calling setters on u r form because the list on
form is
smaller, i will suggest following approach.
public class MyForm {
private List objectList = new ArrayList();
//use arrayList instead of array as it does not force u to declare size
public Object getObject(index i){
while(index = this.getList().size() ){
this.getList().add(new Object());
}
return this.getList().getObject(index);
}
}
So in this case, when the setter is called,the form will be
added with bean
first nd then the setter will be called.
Try this approach and let me know.
Regards,
Shirish
-Original Message-
From: leomaciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 5:43 PM
To: struts-user
Cc: leomaciel
Subject: Re: struggling with indexed/repeating input fields
I GOT IT!
I forgot to send the struts-config.xml and there were the difference
VERY-IMPORTANT
if I set the action scope=request I get:
javax.servlet.ServletException: BeanUtils.populate
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0
or
Caused by: java.lang.NullPointerException
make sure you don't have scope=request in your action ... /action
/VERY-IMPORTANT
=== my struts-config.xml ===
form-beans
...
form-bean name=IndexedForm type=test.IndexedForm /
form-bean name=ParametersForm type=test.ParametersForm /
/form-beans
...
action path=/indexed
type=test.IndexedAction
name=IndexedForm
validate=false
forward name=success path=/indexed.jsp/
/action
action path=/indexedResult
type=test.IndexedResultAction
name=IndexedForm
validate=false
forward name=success path=/indexedResult.jsp/
/action
action
path=/ShowParameters
type=test.ShowParametersAction
name=ParametersForm
validate=false
forward name=success path=/parameters.jsp /
/action
!-- Save parameters --
action
path=/SaveParameters
type=test.SaveParametersAction
name=ParametersForm
validate=false
forward name=success path=/indextest.jsp /
/action
===
Try it out.
Cheers,
Leo
From: Leonardo Maciel [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 15:33:04 +
Kevin,
I finally got
logic:iterate ... html:text ... indexed=true/ ... /logic:iterate
to work.
The sample code came from
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html
Thank you Dave.
I built Dave's code on top of struts-example. All necessary code is
attached.
On the index.jsp page there are two links
html:link page=/indexed.doIterate html:text indexed
example/html:link
html:link page=/ShowParameters.doFrom Dave Iterate
html:text indexed
example/html:link
The first one, indexed.do, doesn't work. Gives
IndexOutOfBoundException.
The second, ShowParameters.do, works. :D
I still trying to figure out the differences between those two...
Good luck!
Leo
From: Kevin HaleBoyes [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL
RE: Re: struggling with indexed/repeating input fields
ic...
So it is a feature :)
I will try it out.
Thank you, Jim and Shirish, for the help
Leo
From: Jim Krygowski [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: Struts Users Mailing List [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 12:52:36 -0500
Leo,
I don't know if this will help, but we experienced a similar issue. I do
believe you are right: it is an artifact of a Request scoped ActionForm.
Our solution was to modify the indexed getters and setters so that they
automatically sized the the internal array list representation upon
request.
This approach eliminated the IndexOutOfBoundsError on submit of our form.
-Original Message-
From: Leonardo Maciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 12:18 PM
To: [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
I wish I had another solution to the problem.
I am using ArrayList and it is initialized on IndexedAction (see
attached)
=
for ( int i=0; i10; i++ ) {
NameValue nv = new NameValue( ,new Integer(i) );
al.add( nv );
}
=
The values show on the page. But when you submit the form, the ArrayList
vanish.
Where is the ArrayList size 10 initialize ?
The exception happens on BeanUtils.populate before execute the submit
action.
If you can make the code attached work with scope=request I will be
surprised
Please take a look in the code before suggested what is already
implemented.
Thank you,
Leo
From: [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: RE: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 17:52:52 +0100
HI,
I think u are suggesting that every form has to be in session
scope which
is
dangerous and will unnecessarily clog the session object.
If u have problems when calling setters on u r form because the list on
form is
smaller, i will suggest following approach.
public class MyForm {
private List objectList = new ArrayList();
//use arrayList instead of array as it does not force u to declare size
public Object getObject(index i){
while(index = this.getList().size() ){
this.getList().add(new Object());
}
return this.getList().getObject(index);
}
}
So in this case, when the setter is called,the form will be
added with bean
first nd then the setter will be called.
Try this approach and let me know.
Regards,
Shirish
-Original Message-
From: leomaciel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 19, 2002 5:43 PM
To: struts-user
Cc: leomaciel
Subject: Re: struggling with indexed/repeating input fields
I GOT IT!
I forgot to send the struts-config.xml and there were the difference
VERY-IMPORTANT
if I set the action scope=request I get:
javax.servlet.ServletException: BeanUtils.populate
...
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 0
or
Caused by: java.lang.NullPointerException
make sure you don't have scope=request in your action ... /action
/VERY-IMPORTANT
=== my struts-config.xml ===
form-beans
...
form-bean name=IndexedForm type=test.IndexedForm /
form-bean name=ParametersForm type=test.ParametersForm /
/form-beans
...
action path=/indexed
type=test.IndexedAction
name=IndexedForm
validate=false
forward name=success path=/indexed.jsp/
/action
action path=/indexedResult
type=test.IndexedResultAction
name=IndexedForm
validate=false
forward name=success path=/indexedResult.jsp/
/action
action
path=/ShowParameters
type=test.ShowParametersAction
name=ParametersForm
validate=false
forward name=success path=/parameters.jsp /
/action
!-- Save parameters --
action
path=/SaveParameters
type=test.SaveParametersAction
name=ParametersForm
validate=false
forward name=success path=/indextest.jsp /
/action
===
Try it out.
Cheers,
Leo
From: Leonardo Maciel [EMAIL PROTECTED]
Reply-To: Struts Users Mailing List
[EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: Re: struggling with indexed/repeating input fields
Date: Tue, 19 Nov 2002 15:33:04 +
Kevin,
I finally got
logic:iterate ... html:text ... indexed=true/ ...
/logic:iterate
to work.
The sample code came from
http://www.mail-archive.com/struts-user@jakarta.apache.org/msg12084.html
Thank you Dave.
I built Dave's code on top of struts-example. All necessary code is
attached.
On the index.jsp page there are two links
html:link page=/indexed.doIterate html:text indexed
example/html:link
html:link page=/ShowParameters.doFrom Dave Iterate
html:text indexed
example/html:link
The first one, indexed.do, doesn't work. Gives
IndexOutOfBoundException.
The second, ShowParameters.do
RE: Re: struggling with indexed/repeating input fields
There's actually some Commons Collections support for this type of approach - see: org.apache.commons.collections.ListUtils.lazyList Of course, one potential problem with this is if someone can forge a request with *lots* of parameters that will cause your list/array to gobble up all available memory... Quoting Jim Krygowski [EMAIL PROTECTED]: Leo, I don't know if this will help, but we experienced a similar issue. I do believe you are right: it is an artifact of a Request scoped ActionForm. Our solution was to modify the indexed getters and setters so that they automatically sized the the internal array list representation upon request. This approach eliminated the IndexOutOfBoundsError on submit of our form. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- Kris Schneider mailto:[EMAIL PROTECTED] D.O.Tech http://www.dotech.com/ -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE : struggling with indexed/repeating input fields
Ya, you got the problem. I will not be submitting the form. Instead I will call another form or jsp along with the values of the selected row as parameters. I do not know how to get just the selected row's data. regards, Dinesh Samson J -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 19 November 2002 20:37 To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: struggling with indexed/repeating input fields can you please explain the problem preperly? If u are showing the list using html:text and pressing submitting button then there is no reason why the values will not be passed over.But as u are on the same form , all the rows will be submitted instead of just the one from where the button is pressed. So is this u r probvloem that u just want the data from selected row but getting all the data?ansd dont know how to get just the selected rows data? -Original Message- From: dinesh.samson [mailto:[EMAIL PROTECTED]] Sent: Tuesday, November 19, 2002 5:16 PM To: struts-user Subject: RE: struggling with indexed/repeating input fields Greetings Kevin, For me the iterate tag is working. But I have a problem. My requirement is, I will show a list, from which I will be selecting a particular detail and click on edit in the same row. This will take some of the values in that row and pass it on to the next jsp/action. I am unable to get it working. My iterate tag is working with indexed property and the html generated also has items[i].name But I am unable to get the value of the item in the selected row. Can you tell me how to get them! Thanx in advance regards, Dinesh Samson J -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: RE : struggling with indexed/repeating input fields
I can see these mostly untested possibilities: 1. Set the value of the edit button to reflect the index value. 2. Implement a javascript event handler on each edit button, which will set the value of a hidden field to the loop index. When the request parameters are processed, you'll know which index of the array to reference. 3. Inside each tr tag in the loop, put a separate form, containg the data and the edit button. That will give you the selected information. Unfortunately, the HTML spec forbids a form tag directly inside the tr tag. Fortunately, both Mozilla/Netscape and IE support this, perhaps accidently, perhaps intentionally. -Original Message- From: Dinesh Samson J [mailto:[EMAIL PROTECTED]] Sent: Tuesday, November 19, 2002 10:34 AM To: [EMAIL PROTECTED] Subject: RE : struggling with indexed/repeating input fields Ya, you got the problem. I will not be submitting the form. Instead I will call another form or jsp along with the values of the selected row as parameters. I do not know how to get just the selected row's data. regards, Dinesh Samson J -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 19 November 2002 20:37 To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: struggling with indexed/repeating input fields can you please explain the problem preperly? If u are showing the list using html:text and pressing submitting button then there is no reason why the values will not be passed over.But as u are on the same form , all the rows will be submitted instead of just the one from where the button is pressed. So is this u r probvloem that u just want the data from selected row but getting all the data?ansd dont know how to get just the selected rows data? -Original Message- From: dinesh.samson [mailto:[EMAIL PROTECTED]] Sent: Tuesday, November 19, 2002 5:16 PM To: struts-user Subject: RE: struggling with indexed/repeating input fields Greetings Kevin, For me the iterate tag is working. But I have a problem. My requirement is, I will show a list, from which I will be selecting a particular detail and click on edit in the same row. This will take some of the values in that row and pass it on to the next jsp/action. I am unable to get it working. My iterate tag is working with indexed property and the html generated also has items[i].name But I am unable to get the value of the item in the selected row. Can you tell me how to get them! Thanx in advance regards, Dinesh Samson J -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
