Hi Igor,
Check my response to "Re: [Wicket-user] I see a lot of questions and
talk about DropDownChoice and IChoiceRenderer."
I have figured it out and thanks for the help.
Florian
Igor Vaynberg wrote:
since you are using a compound property model, and create your ddc
with id "categories" you are trying to access bean.getCategories()
property, but i see no such property defined. so why is your form
model compound? once again i urge you to read the models wiki page.
-igor
On 5/18/07, *Florian Hehlen* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
wrote:
Here is the bean... sorry I should have thought to include it:
package com.sag.ids.web.data.dto;
import com.sag.ids.api.datamodel.java.*;
import java.io.*;
public class SymbolDto implements Serializable
{
public String
getIdsDocoId()
{
return theIdsDocoId;
}
public void
setIdsDocoId(String aIdsDocoId)
{
theIdsDocoId = aIdsDocoId;
}
public long
getIdsSymbolId()
{
return theIdsSymbolId;
}
public void
setIdsSymbolId(long aIdsSymbolId)
{
theIdsSymbolId = aIdsSymbolId;
}
public String
getName()
{
return theName;
}
public void
setName(String aName)
{
theName = aName;
}
public String
getCategoryName()
{
return theCategoryName;
}
public void
setCategoryName(String aCategoryName)
{
theCategoryName = aCategoryName;
}
public String
getCategoryId()
{
return theCategoryId;
}
public void
setCategoryId(String aCategoryId)
{
theCategoryId = aCategoryId;
}
public String
getProductTypeName()
{
return theProductTypeName;
}
public void
setProductTypeName(String aProductTypeName)
{
theProductTypeName = aProductTypeName;
}
public String
getProductTypeId()
{
return theProductTypeId;
}
public void
setProductTypeId(String aProductTypeId)
{
theProductTypeId = aProductTypeId;
}
public String
getUnderlyingTypeName()
{
return theUnderlyingTypeName;
}
public void
setUnderlyingTypeName(String aUnderlyingTypeName)
{
theUnderlyingTypeName = aUnderlyingTypeName;
}
public String
getUnderlyingTypeId()
{
return theUnderlyingTypeId;
}
public void
setUnderlyingTypeId(String aUnderlyingTypeId)
{
theUnderlyingTypeId = aUnderlyingTypeId;
}
public String
getCurrencyName()
{
return theCurrencyName;
}
public void
setCurrencyName(String aCurrencyName)
{
theCurrencyName = aCurrencyName;
}
public String
getCurrencyId()
{
return theCurrencyId;
}
public void
setCurrencyId(String aCurrencyId)
{
theCurrencyId = aCurrencyId;
}
public String
getExchangeName()
{
return theExchangeName;
}
public void
setExchangeName(String aExchangeName)
{
theExchangeName = aExchangeName;
}
public String
getExchangeId()
{
return theExchangeId;
}
public void
setExchangeId(String aExchangeId)
{
theExchangeId = aExchangeId;
}
public String
getDescription()
{
return theDescription;
}
public void
setDescription(String aDescription)
{
theDescription = aDescription;
}
public String
getTradingHours()
{
return theTradingHours;
}
public void
setTradingHours(String aTradingHours)
{
theTradingHours = aTradingHours;
}
public String
getUrl()
{
return theUrl;
}
public void setUrl(String aUrl)
{
theUrl = aUrl;
}
public double
getMultiplier()
{
return theMultiplier;
}
public void
setMultiplier(double aMultiplier)
{
theMultiplier = aMultiplier;
}
public void setDaoActionError(String aResult) {
theDaoActionErrorState = true;
theDaoActionError = aResult;
}
public boolean isDaoActionErrorState()
{
return theDaoActionErrorState;
}
public String getDaoActionError()
{
return theDaoActionError;
}
private long theIdsSymbolId = -1;
private String theIdsDocoId;
private String theName = "NEW SYMBOL";
private String theCategoryName = "";
private String theCategoryId = "";
private String theProductTypeName = "";
private String theProductTypeId = "";
private String theUnderlyingTypeName = "";
private String theUnderlyingTypeId = "";
private String theCurrencyName = "";
private String theCurrencyId = "";
private String theExchangeName = "";
private String theExchangeId = "";
private String theDescription = "";
private String theTradingHours = "";
private String theUrl = "";
private double theMultiplier = -1;
private String theDaoActionError ="";
private boolean theDaoActionErrorState;
}
Igor Vaynberg wrote:
no, it doesnt really help since we cant see the bean that is
inside mySymbol.
as far as the example below:
see the use of loadabledetachablemodel below.
also you are specifying the same model for selection and list of
choices, that makes no sense. if whatever bean inside mySymbol
model has a "categories" property, then see my correction below.
-igor
On 5/18/07, *Florian Hehlen* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
wrote:
public class SymbolAddUpdate extends WebPage
{
public SymbolAddUpdate(PageParameters aParams)
{
addFeedback();
addPageTitle("Add/Update Symbol");
CompoundPropertyModel mySymbol =
checkNewOrUpdate(aParams, aParams.getString("theSymbolId"));
final Form myForm = new AddUpdateForm("form.symbol",
mySymbol);
add(myForm);
TextField myName = new TextField("name");
final ChoiceOptions myOptions = new
LoadableDetachableModel() (
load(){ return
theDao.findAllCategoriesAsDto()); }}
final ChoiceRenderer myRenderer = new
ChoiceRenderer("name", "id");
final CategoryChoices myCategories = new
CategoryChoices();
DropDownChoice myCat
= new DropDownChoice("categories",
myCategories,myRenderer);
[...]
}
I hope this helps.
thanks,
florian
Igor Vaynberg wrote:
if you show me the exact code snippet that doesnt work that
will give me the necessary context.
-igor
On 5/17/07, *Florian Hehlen* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi,
Thanks for the help... It's starting to make more sense
to me although still not working. The issue is
definitely with the form model. because all my sandbox
experiments show me that it all goes to hell when i
introduce the model in the form. My form is a a bean
wrapped in a CompoundPropertyModel.
Maybe you can clarify below your explanation in that
context.
florian
Igor Vaynberg wrote:
if you type it it looks like this
DDC<T>(String,IModel<T>,IModel<List<T>>,IChoiceRenderer<T>)
the first model is the one that holds the selection,
the second is the one that holds a list of available
choices.
the constructor with a single model:
DDC<T>(String,IModel<List<T>>,IChoiceRenderer<T>)
is used when you use DDC in combination with a compound
property model on the form, in which case the ddc's id
is used as a property expression into form's model to
determine the selection. there is a great wiki page on
models.
so try this
myForm.add(new DropDownChoice("select",new Model(),new
MyChoices(),myRenderer));
this will create a ddc with a null selection. its not
practical, because to get the selection you have to
call ddc.getmodelobject(), but it will at least get you
going before you decide on what model to use.
-igor
On 5/16/07, *Florian Hehlen* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
hi,
I am new to wicket so I am not sure how simple this
issue is.
I am creating DropDownChoice components. I want to
a) build the the
Options from a list of Objects (not primitives) and
b) want to render
the option id and value as an attribute of the
object in the list. this
definitly works in the following sample code:
public class WicketSandbox extends WebPage
{
public WicketSandbox()
{
addPageTitle("Development Sandbox");
final Form myForm = new Form("form");
add(myForm);
final ChoiceRenderer myRenderer = new
ChoiceRenderer("name", "id");
myForm.add(new DropDownChoice("select",new
MyChoices(),myRenderer));
}
}
But as soon as I add an IModel to the form it seems
that the
DropDownChoice looks up the choices in the form's
IModel. I have tried
to use the other constructors for the
DropDownChoice which require an
(String id, IModel model, IModel choices,
IChoicerenderer renderer) but
I can't figure out what is the difference between
the 2 IModel objects
that have to be provided. If I provide twice a ref
to the same object I
get a different error:
The expression 'id' is neither an index nor is it a
method for the list class java.util.ArrayList
this is an improvement because it is accessing the
right object and
retrieving the list of choices but not extracting
the the objects from
the list as it does when I use (String id, IModel
choices,
IChoicerenderer renderer).
In all cases if I remove the ChoiceRenderer my web
page builds and
displays but I see object.toString() values in my
drop-downs.
Any tips or pointers would be greatly appreciated.
Florian Hehlen
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