Well, I got the collection populated using this syntax (I am using a List, and
the docs say you should not use square brackets unless it's a map, but it seems
to require square brackets (also needs the value attribute as below)
<s:textfield name="fileFields[%{id}].fieldName" value="%{fieldName}"/>
I also removed the properties file since it seems to work without it (probably
generics kicking in I guess?)
So, my final problem is this: my model's List (an ArrayList) is being
populated, but for each element that is correctly set, I also get an extra
'null' element, which I don't want.
Anyone know where the null elements are coming from (it looks like this):
[0] null
[1] Field[blah]
[2] null
[3] Field[blahblah]
Nearly there - Thanks!
-----Original Message-----
From: Richard Gundersen [mailto:[email protected]]
Sent: 05 February 2009 12:00
To: [email protected]
Subject: Collections and type conversion
Hi
Could anyone point out what I'm doing wrong here please? My model (FileType)
has a collection of Field objects and a getter called getFileFields().
I want to automatically display and set these when my form is rendered/posted.
Rendering is easy using an iterator, but to allow the collection to be
reconstructed upon form submission, I think I need to enable type conversion.
So, in the same package as my action, I have this file:
------------------------------------------
FileManagementAction-conversion.properties
------------------------------------------
KeyProperty_fields=id
Element_fields=uk.ac.salford.bulkuploader.entity.Field
CreateIfNull_fields=true
In my JSP, I have the following
-------------------------------
<s:iterator id="field" value="model.fileFields" status="status">
<s:textfield name="fieldName" size="20"/> <%-- version 1 --%>
<s:textfield name="fileFields(%{id}).fieldName" /> <%-- version 2
--%>
...
Version 1 displays OK, but because it's not indexed, when I submit the form,
the model's collection (fileFields) is not updated.
Version 2 does not display the value (of 'fieldName') at all (although the
'%{id}' value is correctly output). And, it doesn't set the collection in my
model either, although I believe it should according to the docs.
I've tried lots of variations on the OGNL syntax for the textfield's name
attribute but can't hit the right one; would really appreciate some help.
Thanks
Richard
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