Re: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
The book in general has some best practices to pretty much everything. But your CF approach sounds good; we're in a similar situation in that we have a large knowledge management system built in CF - there will never be a plan to redo that in another language, and the flex stuff we build just adds onto the existing 'product'. [EMAIL PROTECTED] wrote: Thanks for the advice, Tariq. I ordered the book last week and am looking forward to giving it a read. Does the book give examples on how to create a result handler? In terms of CFCs, I'm converting a MVC Fusebox 4 coldfusion app to a Flex interface. Since the application is allready very large and there are already thousands of programming hours put into the controller and model sections, I wanted to re-use as much of my CF code as possible. My idea is to call CFCs that will have a number of cfincludes, mimicking a fuseaction as close as possible. I realize this will lead to very tight dependency on CF, but I'm committed at this point. Do you see any other drawbacks to this approach? -Original Message- From: flexcoders@yahoogroups.com on behalf of Tariq Ahmed Sent: Sat 7/23/2005 1:13 PM To: flexcoders@yahoogroups.com Cc: Subject: Re: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Good stuff! - Well I don't know if there's really a standard with respect to CF to Flex communications. Certainly there are naming convention standards that I see being adopted from the Flash/Java development side of things, and having things returned in a non-predictable manner can cost you over time. So the question is whether to put the time up front, or later (eg hiring new guys w/o CF background that were expecting a field to be called firstName and it turns out to be FIRSTNAME). In general I would say stick to and enforce a convention that your team is comfortable with, and minimize dependency on assumptions of any particular platform (eg if you decide to switch from CF to Java sometime in the future). On the flipside we also create our external facing CFCs with no assumption that it's Flex communicating with it. - I would highly recommend the iteration::two book on rich internet applications which talks about patterns. As for invoking a result handler function vs direct assignment. I guess it depends. But in general as your apps get more complex you'll probably end up needing a result handler to do more than just assigning the results. [EMAIL PROTECTED] wrote: Hi Tarik, Please ignore my previous messages. I was able to get it working. I misunderstood the capitalization advice. I had capitalized the entire field, when only the first letter needed to be. A couple of follow-up questions, if you don't mind: I see contrary advice on how to return data from CF. Some say through an array and others just take the recordset directly. Which would you consider best practice? I want to settle on a standard as I build out my first Flex app. In the RemoteObject tag, is it better to just pass the event to a function (i.e., fault="doFault(event)" result="doResult(event)") or through more implicit calls (i.e., fault="mx.controls.Alert.show(event.fault.faultstring) mx:method name="doResult" result="handleResult(event)"). Again, I'm just looking for a best practice I can standardize on. Thank you, Darius -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Computer software testing Macromedia flex Development Software developer YAHOO! GROUPS LINKS Visit your group "flexcoders" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Thanks for the advice, Tariq. I ordered the book last week and am looking forward to giving it a read. Does the book give examples on how to create a result handler? In terms of CFCs, I'm converting a MVC Fusebox 4 coldfusion app to a Flex interface. Since the application is allready very large and there are already thousands of programming hours put into the controller and model sections, I wanted to re-use as much of my CF code as possible. My idea is to call CFCs that will have a number of cfincludes, mimicking a fuseaction as close as possible. I realize this will lead to very tight dependency on CF, but I'm committed at this point. Do you see any other drawbacks to this approach? -Original Message- From: flexcoders@yahoogroups.com on behalf of Tariq Ahmed Sent: Sat 7/23/2005 1:13 PM To: flexcoders@yahoogroups.com Cc: Subject: Re: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ winmail.dat
RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
I think the workaround for caps was
SELECTStuff as StuffFROM
tbl
Philippe
Maegerman
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jeff
SteinerSent: vendredi 22 juillet 2005 6:01To:
flexcoders@yahoogroups.comSubject: RE: [flexcoders] Flex and CFCs --
problems displaying recordsets in datagrids
When returning data
from a CFC most of the time it changes the name to all caps. For
example:
SELECT Stuff FROM
Table
Cfreturn
query
Output it
as:
event.result[0].STUFF;
Jeff
Founder
Flex
Authority
http://www.flexauthority.com
We are actively seeking
contributors for the site. Have a sample that you want to share with the
world? Send it to us!
From:
flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On Behalf Of coldfsSent: Thursday, July 21, 2005 4:35
PMTo: flexcoders@yahoogroups.comSubject: [flexcoders] Flex and CFCs --
problems displaying recordsets in datagrids
Hi,I'm new to Flex and have been working over the last few weeks
to integrate this product with
CF. One of my central aims is to be able to pass data from Flex to a CFC which houses a query and will
return a recordset back to
Flex. Through piecing together examples here and there, I've figured out how to call the CFC and send data to
it from Flex, but I've been unable
to figure out how to display the recordset in a Flex datagrid. Any help/examples, best practices,
on how to do this would be greatly
appreciated. My existing code follows. The query recordset returns two fields. The error I receive
is:1 Error found.
Error /FlexToCFC2.mxml:19
There is no property with the name
'text'.--?xml version="1.0"
encoding="utf-8"?mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml"
xmlns="*"
mx:Script
![CDATA[
private function
doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function doResult(event:Object):Void{
output.text =
event.result;
}
private function doFault(event:Object):Void{
alert("Error invoking CF: " +
event.fault.faultstring);
}
]]
/mx:Script mx:RemoteObject id="ro"
endpoint="http://gx270dev.childsupport.net/flashservices/gateway"
source="Model.mUtilities.mUpdate.qry_UpdateAuthorization"
fault="doFault(event)"
result="doResult(event)"
/mx:RemoteObject mx:Panel
title="Updates"
mx:Form defaultButton="sendButton"
mx:FormItem label="Input:"
direction="horizontal"
mx:TextInput
id="input"/
mx:Button
id="sendButton" label="Send"
click="doClick()"/
/mx:FormItem
mx:DataGrid id="output" width="520"
wordWrap="true"
mx:columns
mx:Array
mx:DataGridColumn width="200" headerText="Update Form"
columnName="Function"/
mx:DataGridColumn width="320" headerText="Description"
columnName="Description"/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel/mx:ApplicationMany thanks,Darius
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RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Darius,
Rather than passing ColdFusion recordsets directly back to Flex, what we did
is transform the results into an array of CFCs or an array of structs and
let the automatic AS type translation transform these results into native AS
value objects.
I would be weary of too tightly coupling your Flex layer with the specifics
of your server side.
HTH,
Allen
www.prismix.com/
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of coldfs
Sent: 22 July 2005 00:35
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex and CFCs -- problems displaying recordsets in
datagrids
Hi,
I'm new to Flex and have been working over the last few weeks to
integrate this product with CF. One of my central aims is to be able
to pass data from Flex to a CFC which houses a query and will return
a recordset back to Flex. Through piecing together examples here and
there, I've figured out how to call the CFC and send data to it from
Flex, but I've been unable to figure out how to display the recordset
in a Flex datagrid. Any help/examples, best practices, on how to do
this would be greatly appreciated. My existing code follows. The
query recordset returns two fields. The error I receive is:
1 Error found.
Error /FlexToCFC2.mxml:19
There is no property with the name 'text'.
--
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.macromedia.com/2003/mxml;
xmlns=*
mx:Script
![CDATA[
private function doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function doResult(event:Object):Void{
output.text = event.result;
}
private function doFault(event:Object):Void{
alert(Error invoking CF: +
event.fault.faultstring);
}
]]
/mx:Script
mx:RemoteObject id=ro
endpoint=http://gx270dev.childsupport.net/flashservices/gateway;
source=Model.mUtilities.mUpdate.qry_UpdateAuthorization
fault=doFault(event)
result=doResult(event)
/mx:RemoteObject
mx:Panel title=Updates
mx:Form defaultButton=sendButton
mx:FormItem label=Input:
direction=horizontal
mx:TextInput id=input/
mx:Button id=sendButton
label=Send click=doClick()/
/mx:FormItem
mx:DataGrid id=output width=520
wordWrap=true
mx:columns
mx:Array
mx:DataGridColumn width=200
headerText=Update Form columnName=Function/
mx:DataGridColumn width=320
headerText=Description columnName=Description/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel
/mx:Application
Many thanks,
Darius
--
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RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Hi
Allen,
I'm
very interested in learning how you achieved this. I continue to be
confused by all varying syntax one can use to access data using AMF. It
looks like your approach is certainly a best practice. Do you have an
example you could share of your cfc, mxml, and actionscript. I just need
one good sample to get off and running.
Many
thanks,
Darius
-Original Message-From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED]On Behalf Of Allen
ManningSent: Friday, July 22, 2005 1:23 AMTo:
flexcoders@yahoogroups.comSubject: RE: [flexcoders] Flex and CFCs
-- problems displaying recordsets in
datagridsDarius,Rather than passing
ColdFusion recordsets directly back to Flex, what we didis transform the
results into an array of CFCs or an array of structs andlet the automatic
AS type translation transform these results into native ASvalue
objects.I would be weary of too tightly coupling your Flex layer with
the specificsof your server
side.HTH,Allenwww.prismix.com/-Original
Message-From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] OnBehalf Of coldfsSent: 22 July
2005 00:35To: flexcoders@yahoogroups.comSubject: [flexcoders] Flex and
CFCs -- problems displaying recordsets indatagridsHi,I'm
new to Flex and have been working over the last few weeks to integrate
this product with CF. One of my central aims is to be able to pass
data from Flex to a CFC which houses a query and will return a recordset
back to Flex. Through piecing together examples here and there, I've
figured out how to call the CFC and send data to it from Flex, but I've
been unable to figure out how to display the recordset in a Flex
datagrid. Any help/examples, best practices, on how to do this would
be greatly appreciated. My existing code follows. The query
recordset returns two fields. The error I receive is:1 Error
found. Error /FlexToCFC2.mxml:19 There is no property with the
name
'text'.--?xml
version="1.0" encoding="utf-8"?mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml"
xmlns="*"
mx:Script
![CDATA[
private
function doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function
doResult(event:Object):Void{
output.text =
event.result;
}
private
function doFault(event:Object):Void{
alert("Error
invoking CF: " +
event.fault.faultstring);
}
]]
/mx:Script
mx:RemoteObject id="ro"
endpoint="http://gx270dev.childsupport.net/flashservices/gateway"
source="Model.mUtilities.mUpdate.qry_UpdateAuthorization"
fault="doFault(event)"
result="doResult(event)"
/mx:RemoteObject
mx:Panel
title="Updates"
mx:Form
defaultButton="sendButton"
mx:FormItem
label="Input:"
direction="horizontal"
mx:TextInput
id="input"/
mx:Button id="sendButton" label="Send"
click="doClick()"/
/mx:FormItem
mx:DataGrid
id="output" width="520"
wordWrap="true"
mx:columns
mx:Array
mx:DataGridColumn width="200"
headerText="Update Form"
columnName="Function"/
mx:DataGridColumn width="320"
headerText="Description"
columnName="Description"/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel/mx:ApplicationMany
thanks,Darius--Flexcoders Mailing
ListFAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txtSearch
Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
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Visit your group "flexcoders" on the web.
To unsubscribe from this group, send an email to:[EMAIL PROTECTED]
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RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Hi
Tarik,
Please
ignore my previous messages. I was able to get it working. I
misunderstood the capitalization advice. I had capitalized the entire
field, when only the first letter needed to be.
A
couple of follow-up questions, if you don't mind:
I see
contrary advice on how to return data from CF. Some say through an array
and others just take the recordset directly. Which would you consider
best practice? I want to settle on a standard as I build out my first Flex
app.
In
the RemoteObject tag, is it better to just pass the event to a function (i.e.,
fault="doFault(event)" result="doResult(event)") or through more implicit
calls (i.e., fault="mx.controls.Alert.show(event.fault.faultstring)
mx:method name="doResult" result="handleResult(event)"). Again, I'm
just looking for a best practice I can standardize on.
Thank
you,
Darius
-Original Message-From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED]On Behalf Of Tarik
AhmedSent: Thursday, July 21, 2005 6:28 PMTo:
flexcoders@yahoogroups.comSubject: Re: [flexcoders] Flex and CFCs
-- problems displaying recordsets in datagridsHi
Darius, welcome.Some things to keep in mind:- CF and it's CFCs are
not case sensitive, where as Flex is. Eg if you do a CFQUERY and just send
the results back, all the fields will be upper case.- I think on your
doResult you'll need output.dataProvider =
event.result._items;Here's some articles that should help you
out:http://www.bpurcell.org/blog/index.cfm?mode=entryentry=1019http://www.richinternet.de/blog/index.cfm?entry=831FE26E-0D70-9C2D-2549E1D1978CF1B0coldfs
wrote:Hi,I'm new to Flex and have been working
over the last few weeks to integrate this product with CF. One
of my central aims is to be able to pass data from Flex to a CFC which
houses a query and will return a recordset back to Flex. Through
piecing together examples here and there, I've figured out how to call
the CFC and send data to it from Flex, but I've been unable to figure
out how to display the recordset in a Flex datagrid. Any
help/examples, best practices, on how to do this would be greatly
appreciated. My existing code follows. The query recordset
returns two fields. The error I receive is:1 Error
found. Error /FlexToCFC2.mxml:19 There is no property
with the name
'text'.--?xml
version="1.0" encoding="utf-8"?mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml"
xmlns="*"
mx:Script
![CDATA[
private function
doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function
doResult(event:Object):Void{
output.text =
event.result;
}
private function
doFault(event:Object):Void{
alert("Error
invoking CF: " +
event.fault.faultstring);
}
]]
/mx:Script
mx:RemoteObject id="ro"
endpoint="http://gx270dev.childsupport.net/flashservices/gateway"
source="Model.mUtilities.mUpdate.qry_UpdateAuthorization"
fault="doFault(event)"
result="doResult(event)"
/mx:RemoteObject
mx:Panel
title="Updates"
mx:Form
defaultButton="sendButton"
mx:FormItem
label="Input:"
direction="horizontal"
mx:TextInput
id="input"/
mx:Button id="sendButton"
label="Send"
click="doClick()"/
/mx:FormItem
mx:DataGrid
id="output" width="520"
wordWrap="true"
mx:columns
mx:Array
mx:DataGridColumn width="200"
headerText="Update Form"
columnName="Function"/
mx:DataGridColumn width="320"
headerText="Description"
columnName="Description"/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel/mx:ApplicationMany
thanks,Darius
--
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Re: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
Hi Darius, welcome.
Some things to keep in mind:
- CF and it's CFCs are not case sensitive, where as Flex is. Eg if you
do a CFQUERY and just send the results back, all the fields will be
upper case.
- I think on your doResult you'll need output.dataProvider =
event.result._items;
Here's some articles that should help you out:
http://www.bpurcell.org/blog/index.cfm?mode=entryentry=1019
http://www.richinternet.de/blog/index.cfm?entry=831FE26E-0D70-9C2D-2549E1D1978CF1B0
coldfs wrote:
Hi,
I'm new to Flex and have been working over the last few weeks to
integrate this product with CF. One of my central aims is to be able
to pass data from Flex to a CFC which houses a query and will return
a recordset back to Flex. Through piecing together examples here and
there, I've figured out how to call the CFC and send data to it from
Flex, but I've been unable to figure out how to display the recordset
in a Flex datagrid. Any help/examples, best practices, on how to do
this would be greatly appreciated. My existing code follows. The
query recordset returns two fields. The error I receive is:
1 Error found.
Error /FlexToCFC2.mxml:19
There is no property with the name 'text'.
--
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.macromedia.com/2003/mxml;
xmlns=*
mx:Script
![CDATA[
private function doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function doResult(event:Object):Void{
output.text = event.result;
}
private function doFault(event:Object):Void{
alert(Error invoking CF: +
event.fault.faultstring);
}
]]
/mx:Script
mx:RemoteObject id=ro
endpoint=http://gx270dev.childsupport.net/flashservices/gateway;
source=Model.mUtilities.mUpdate.qry_UpdateAuthorization
fault=doFault(event)
result=doResult(event)
/mx:RemoteObject
mx:Panel title=Updates
mx:Form defaultButton=sendButton
mx:FormItem label=Input:
direction=horizontal
mx:TextInput id=input/
mx:Button id=sendButton
label=Send click=doClick()/
/mx:FormItem
mx:DataGrid id=output width=520
wordWrap=true
mx:columns
mx:Array
mx:DataGridColumn width=200
headerText=Update Form columnName=Function/
mx:DataGridColumn width=320
headerText=Description columnName=Description/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel
/mx:Application
Many thanks,
Darius
--
Flexcoders Mailing List
FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
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* To visit your group on the web, go to:
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[EMAIL PROTECTED]
* Your use of Yahoo! Groups is subject to:
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RE: [flexcoders] Flex and CFCs -- problems displaying recordsets in datagrids
When returning data from a CFC
most of the time it changes the name to all caps. For example:
SELECT Stuff FROM Table
Cfreturn query
Output it as:
event.result[0].STUFF;
Jeff
Founder
Flex Authority
http://www.flexauthority.com
We are actively seeking contributors for
the site. Have a sample that you want to share with the world? Send
it to us!
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of coldfs
Sent: Thursday, July 21, 2005 4:35
PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Flex and
CFCs -- problems displaying recordsets in datagrids
Hi,
I'm new to Flex and have been working over the
last few weeks to
integrate this product with CF. One of my
central aims is to be able
to pass data from Flex to a CFC which houses a
query and will return
a recordset back to Flex. Through piecing
together examples here and
there, I've figured out how to call the CFC and
send data to it from
Flex, but I've been unable to figure out how to
display the recordset
in a Flex datagrid. Any help/examples, best
practices, on how to do
this would be greatly appreciated. My
existing code follows. The
query recordset returns two fields. The
error I receive is:
1 Error found.
Error /FlexToCFC2.mxml:19
There is no property with the name 'text'.
--
?xml version=1.0
encoding=utf-8?
mx:Application xmlns:mx=http://www.macromedia.com/2003/mxml
xmlns=*
mx:Script
![CDATA[
private function doClick():Void{
ro.GetUpdateAuthorization(input.text);
}
private function doResult(event:Object):Void{
output.text =
event.result;
}
private function doFault(event:Object):Void{
alert(Error
invoking CF: +
event.fault.faultstring);
}
]]
/mx:Script
mx:RemoteObject
id=ro
endpoint=http://gx270dev.childsupport.net/flashservices/gateway
source=Model.mUtilities.mUpdate.qry_UpdateAuthorization
fault=doFault(event)
result=doResult(event)
/mx:RemoteObject
mx:Panel
title=Updates
mx:Form
defaultButton=sendButton
mx:FormItem
label=Input:
direction=horizontal
mx:TextInput id=input/
mx:Button id=sendButton
label=Send
click=doClick()/
/mx:FormItem
mx:DataGrid
id=output width=520
wordWrap=true
mx:columns
mx:Array
mx:DataGridColumn width=200
headerText=Update Form
columnName=Function/
mx:DataGridColumn
width=320
headerText=Description
columnName=Description/
/mx:Array
/mx:columns
/mx:DataGrid
/mx:Form
/mx:Panel
/mx:Application
Many thanks,
Darius
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