[Seaside] Form extended with ajax and callbacks

[Norbert Hartl]

Am 02.12.2011 um 17:45 schrieb Norbert Hartl:

> 
> Am 02.12.2011 um 17:25 schrieb Paul DeBruicker:
> 
>> On 11-12-02 07:57 AM, Norbert Hartl wrote:
>>> I'm asking myself if I do something wrong or if it is not supported in seaside. I have a form that is rendered the first time. The form includes a select that when being changed triggers an ajax call and this inserts a new input field inside the form. Should it work that I get a value from the input field when the form is being submitted?
>>> 
>>> thanks,
>>> 
>>> Norbert_______________________________________________
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>> 
>> 
>> I would have guessed that would work.  Is it a textInput or something that requires you to serializeWithHidden?  Does your input have a 'name' property after its inserted? Does the input's id or name conflict with anything else in the page/form? Can you see in Firebug if the parameter is sent back to Seaside?  Why not just show/hide the textInput?  Are you submitting the form with ajax or in the traditional way?
> Paul,
> 
> it is a text input field . It has name property and it is transferred to the server. I cannot see anything the input field conflicts with. I don't use toggle because I don't know upfront what has to be inserted. The select field selects a class that is transferred to the server. There a new instance is created and it is returned as magritte component. So I need the extra roundtrip. 
> 
Ok, I've found the problem. As it is all the same form I submit it twice. Once for the transfer of the select value and the second time when using the submit button. The select callback is triggered a second time and the magritte component gets resetted and that is the reason I can't see the value. I'm not sure what is the best solution to it. Is it possible to submit only a subset of the form fields? Otherwise I need to detect this case somehow.

Norbert