Submitting arrays

[liv]

I want to edit a Quiz objects properties, the properties are nested arraylists. I use a MultiActionController.

In the jsp i use a c:foreach loop to create text input fields:

<c:forEach items="${command.questions}" var="q" varStatus="status">
  ${status.index}.<form:input path="questions[${status.index}].question"/>
  <br><br>
  Options:
  <c:forEach items="${q.answers}" var="a" varStatus="index">
    <form:input path="questions[${status.index}].answers[${index.index}].answer"/>
     <br>
  </c:forEach>
</c:forEach>

which works great, the input fields are printed and filled with the correct value from the object.

My problem is how to submit these values back to the controller, I just cannot get it to work! I assumed springs binding would deal with the indexed property names, but it seems not to understand how to apply the indexes to an ArrayList.

Any suggestions on how to bind these parameters back into the Quiz object?

[dr_pompeii]

My problem is how to submit these values back to the controller, I just cannot get it to work! I assumed springs binding would deal with the indexed property names, but it seems not to understand how to apply the indexes to an ArrayList.

wonderful pain right?

i never resolve this, even with my post asking almost the same question

my solution?
ajax for each row
could be silly,
but
for my network control for prices and stocks about warehouse for my articles works fine

[smrutimo]

In your model class, define the List as below:

private List someList = LazyList.decorate(new ArrayList(), FactoryUtils.instantiateFactory(com.abc.xyz.SomeClass.class));

SomeClass is the class that holds each record that you are trying to put at each index.

If you are using ArrayList as your command object, then do the following in your formBackingObject()

return LazyList.decorate(new ArrayList(), FactoryUtils.instantiateFactory(com.abc.xyz.SomeClass.class));

Any of the above should do the job for you.

To use LazyList and FactoryUtils, you would need to put commons-collection.jar in your classpath.

Regards,
Smruti..

[dr_pompeii]

Hello smrutimo

do you have some link or reference tutorial about your solution?

thanks in advanced

[smrutimo]

Hello smrutimo

do you have some link or reference tutorial about your solution?

thanks in advanced

Here u go http://mattfleming.com/node/134

Regards,
Smruti..

[liv]

Thank you so much for the help smrutimo! This worked straight away!

[dr_pompeii]

thanks for the link smrutimo

pretty help

best wishes