I guess the question is, how does one get at blocks which have
framework-generated ids? You can't just getBlock("id"), but maybe if
they were generated with a component (like BlockContainer?) and then you
could just enumerate of that component's contained blocks. I don't know
if that infrastructure exists, but it's a thought.
chris
Bill Holloway wrote:
> I agree, Chris. _resources.findBlock has got to be where the trouble is.
> Somehow the rendering order on Layout winds up only looking at the last
> rendering of the block.
>
> Bill
>
> On Fri, May 2, 2008 at 2:19 AM, Chris Lewis <[EMAIL PROTECTED]>
> wrote:
>
>
>> Hi Bill,
>>
>> You normally have some interesting questions :-) - I don't see
>> t:delegate et al used often and am still trying to digest how they can
>> be used effectively. For your issue, unfortunately I don't know how to
>> fix it at the moment, but the problem exactly here (in Foo.java):
>>
>> layout.addPostWrapperBlock( _resources.findBlock( "tester" ));
>>
>> You've assumed that on each loop iteration, the block by id 'tester'
>> will exist in its own microcosm and therefore be accessible by that id.
>> In reality what I think is happening is that tapestry knows what block
>> has id 'tester', and in subsequent loop iterations over your blocks I'm
>> guessing that all but the last block will be replaced because of the
>> hardcoded block id.
>>
>> Because you're looping you need to let tapestry generate the ids, but
>> then of course there's the question of how to get at them. Now how to
>> fix it...
>>
>> chris
>>
>> Bill Holloway wrote:
>>
>>> Hi All,
>>>
>>> I have a component Foo in a loop on my TestPage. Foo has a block on it
>>> which Foo's template renders and which Foo's page class also picks up
>>>
>> and
>>
>>> adds to a list of blocks on the TestPage's surrounding Layout component.
>>> Layout loops over these blocks and renders them just before the </body>
>>> tag. Problem is that the layout-rendered blocks are all the same --
>>>
>> namely
>>
>>> the last block added to Layout by Foo. What am I doing wrong? Code and
>>>
>> and
>>
>>> rendering results:
>>>
>>> Foo.java
>>> ------------
>>> @Property (write = false)
>>> private int _ref;
>>>
>>> @Inject
>>> private ComponentResources _resources;
>>>
>>> void beginRender () {
>>> _ref = (new Object()).hashCode(); // For a pretty reliably random
>>>
>> int.
>>
>>> Layout layout = (Layout)
>>> _resources.getPage().getComponentResources().getEmbeddedComponent(
>>>
>> "layout"
>>
>>> );
>>> layout.addPostWrapperBlock( _resources.findBlock( "tester" ));
>>> }
>>>
>>> Foo.tml
>>> ----------
>>> <t:container xmlns:t="
>>>
>> http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
>>
>>> <t:block t:id="tester">
>>> <p>Ref: ${ref}</p>
>>> </t:block>
>>> <t:delegate to="block:tester" />
>>> </t:container>
>>>
>>> TestPage.tml
>>> ------------------
>>> <t:layout t:id="layout" xmlns:t="
>>> http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
>>> <t:loop source="0..2"><t:test.foo /></t:loop>
>>> </t:layout>
>>>
>>> Layout.tml (partial)
>>> -------------------------
>>> ...
>>> <t:loop source="postWrapperBlocks" value="var:pwb"><t:delegate
>>>
>> to="var:pwb"
>>
>>> /></t:loop>
>>> </body>
>>> </html>
>>>
>>> When Foo renders in TestPage's template, no problem:
>>> Ref: 16084489
>>> Ref: 736239
>>> Ref: 9163575
>>>
>>> But the rendering at the bottom of Layout is
>>> Ref: 9163575
>>> Ref: 9163575
>>> Ref: 9163575
>>>
>>>
>>>
>> --
>> http://thegodcode.net
>>
>>
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>
>
>
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