Re: persisting re-arranged repeater-rows

[Jeremy Quinn]

On 25 Nov 2003, at 23:18, Sylvain Wallez wrote:

Bruno Dumon wrote:

On Tue, 2003-11-25 at 13:47, Jeremy Quinn wrote:

Hi All,

I am struggling with persisting re-arranged repeater rows.

I have a form that edits an Album Bean which has a (java.util.List) 'Resources' Property which is populated by Resource Beans.

I have the List of Resource Beans represented in the form as a repeater-widget, with move-up, move-down buttons.

When I click one of the up/down buttons, the repeater-rows get re-arranged correctly in the form.

When I save the Album (I am using Hibernate, with cascading) the change in the ordering is not persisted.

I am clearly missing something ..... has anyone else had with a similar issue?

Any suggestions?

No need to look further: AFAIK the binding currently doesn't sync order,
it only checks for new or removed rows. So it considers the list to
which the repeater binds to be an unordered set.

I personally use only the simple-repeater binding, because the full content of the collection is in the rows (no other non-displayed field). And the simple-repeater binding starts by erasing the collection before recreating it from scratch, and in order.

I had this :

<wb:repeater id="resources"
    parent-path="."
    row-path="resources"
    unique-row-id="id"
    unique-path="id">

    <wb:on-bind>
      <wb:value id="id" path="id"/>
      <wb:value id="text" path="text"/>
      <wb:value id="reference" path="reference"/>
    </wb:on-bind>
  </wb:repeater>

But as Bruno said, it won't work with re-arranging because the Resources List is treated as a Set.

So I tried this:

<wb:simple-repeater
   id="resources"
   parent-path="."
   row-path="resources"
/>

but I get no data is in the form, even though I have the correct number of repeats.

so I tried this:

<wb:simple-repeater
   id="resources"
   parent-path="."
   row-path="resources"
>
   <wb:on-bind>
      <wb:value id="id" path="id"/>
      <wb:value id="text" path="text"/>
      <wb:value id="reference" path="reference"/>
   </wb:on-bind>
</wb:simple-repeater>

but Cocoon complains thus :

org.apache.cocoon.woody.binding.BindingException: Cannot handle binding element with name "on-bind".

Any suggestions?

thanks

regards Jeremy

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