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Posted to users@tapestry.apache.org by Thomas Hackel <th...@bi-so.com> on 2005/02/21 18:31:04 UTC
Access Components inside ListEdit (or Foreach) when in listener?
Hi!
We have some Fields which are being iterated by a ListEdit.
How to access the Component in the listener of the Form ?
We can only get the last component for each column.
Is there a solution for this?
Thanks in advance,
Thomas
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Re: Access Components inside ListEdit (or Foreach) when in listener?
Posted by John Reynolds <jo...@gmail.com>.
You're right Thomas.
You will have to cache the values of the individual components, and
validate after they've all been rendered. Components inside ListEdit
and Table are transient.... I'm sure there are good reasons for this,
but when you need to do Form-level validation it's a pain.
On Tue, 22 Feb 2005 10:23:01 +0100, Thomas Hackel
<th...@bi-so.com> wrote:
> Kent Tong wrote:
> > Thomas Hackel <thomas.hackel <at> bi-so.com> writes:
> >
> >
> >>We have some Fields which are being iterated by a ListEdit.
> >>How to access the Component in the listener of the Form ?
> > Why do you want to do that?
>
> To do (semantic) validation of the content, and putting an
> error/delegation into the component which has an semantic/logic error.
>
> The form can only be validated as a whole when all the fields are
> filled, and ne number of fields is dynamic.
>
> (stupid) example:
>
> field1-value: 4
> field2-value: 6
> field3-value: 5
> field4-value: 8
> .
> .
> .
>
> the field3 has a logic error because its not larger than the field before...
>
> IMHO this cant be done with the normal validation.
>
> Best regards,
> Thomas
>
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Re: Access Components inside ListEdit (or Foreach) when in listener?
Posted by Thomas Hackel <th...@bi-so.com>.
Kent Tong wrote:
> Thomas Hackel <thomas.hackel <at> bi-so.com> writes:
>
>
>>We have some Fields which are being iterated by a ListEdit.
>>How to access the Component in the listener of the Form ?
> Why do you want to do that?
To do (semantic) validation of the content, and putting an
error/delegation into the component which has an semantic/logic error.
The form can only be validated as a whole when all the fields are
filled, and ne number of fields is dynamic.
(stupid) example:
field1-value: 4
field2-value: 6
field3-value: 5
field4-value: 8
.
.
.
the field3 has a logic error because its not larger than the field before...
IMHO this cant be done with the normal validation.
Best regards,
Thomas
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Re: Access Components inside ListEdit (or Foreach) when in listener?
Posted by Kent Tong <ke...@cpttm.org.mo>.
Thomas Hackel <thomas.hackel <at> bi-so.com> writes:
> We have some Fields which are being iterated by a ListEdit.
> How to access the Component in the listener of the Form ?
Why do you want to do that?
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Re: Access Components inside ListEdit (or Foreach) when in listener? [auf
Viren geprueft]
Posted by Jonathan O'Connor <Jo...@xcom.de>.
Thomas,
I wanted to do something similar a few months ago, and ran into the same
problem.
It seems that each row gets the same component id in the foreach. So, then
Tapestry adds each component into a HashSet, keyed on component id.
Bingo! That's why you only see the last one, because each put() overrides
the value of the previous one.
Unfortunately, you will have to find an alternative way of doing what you
want. However, maybe you can augment your model collection, and then
create the new components the way you want in the view.
Ciao,
Jonathan O'Connor
XCOM Dublin
Thomas Hackel <th...@bi-so.com>
21/02/2005 17:31
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Access Components inside ListEdit (or Foreach) when in listener? [auf
Viren geprueft]
Hi!
We have some Fields which are being iterated by a ListEdit.
How to access the Component in the listener of the Form ?
We can only get the last component for each column.
Is there a solution for this?
Thanks in advance,
Thomas
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