[html-formfu] Multiple Submits

[Moritz Onken]

There is a little bug. If you do it as I wrote the value of the 
unclicked button will be "" after submission. If you have an error on 
that form the new page will have an empty submit button.


	$form->add_valid( $_->name, $_->value )
	  for ( @{ $form->get_elements( { type => 'submit' } ) }

this code fixes this problem.

Moritz Onken schrieb:
> Found a better way:
> Only the value name pair of the button you click on gets submitted.
> 
>      ---
>      elements:
>        - type: submit
>          name: submit_next
>          value: Localized Value + next
>        - type: submit
>          name: submit_back
>          value_loc: Localized Value + back
> 
>  if ( $form->param( 'submit_next' ) ) {
>      # go on
>  }
>  elsif ( $form->param( 'submit_back' ) ) {
>      # go back
>  }
> 
> Does the Job pretty good
> 
> Thanks anyway!
> 
> Carl Franks schrieb:
>> On 14/08/07, Moritz Onken <onken at houseofdesign.de> wrote:
>>> I started today using FormFu and I just like it! Carl, you did a very
>>> good Job!
>>
>> Thanks - I'm glad it's useful.
>>
>>> But I ran into one problem. I want to use multiple submit buttons. The
>>> common way is, to set a value on each and check that value later to
>>> determine which has been clicked.
>>> That's fine asa long as your page is in only one language.
>>
>> Could you not do something like:
>>
>> if ( $form->param( 'submit_1' ), eq $form->loc( 'submit_1' ) ) {
>>     # submit_1 pressed
>> }
>> elsif ( $form->param( 'submit_2' ), eq $form->loc( 'submit_2' ) ) {
>>     # submit_2 pressed
>> }
>>
>> That's assuming the form is created something like this:
>>
>>     ---
>>     elements:
>>       - type: submit
>>         name: submit_1
>>         value_loc: submit_1
>>       - type: submit
>>         name: submit_2
>>         value_loc: submit_2
>>
>> The only potential problem I think think of with this approach is if:
>> * you're storing the user's language choice using a session or cookie
>> * after viewing the page containing the form, but before submitting 
>> the form...
>> * ...the user uses a 2nd browser window to change their language choice
>> You could prevent this by also storing the language choice in a hidden
>> field, and then doing $form->languages([ $form->param('lang') ])
>> before doing the 'eq' checks.
>>
>>> I thought of a hidden field whose value is being changed on submitting
>>> (by JS).
>>> If there is no better way I will write an element for that and 
>>> publish it.
>>
>> I'd like to make sure that nothing in the core relies on JS for
>> functionality - so make sure you pick an appropriate namespace if you
>> write something like that.
>>
>> For example, I've created a couple of elements in the
>> HTML::FormFu::Element::Dojo::* namespace which use the dojo javascript
>> library (although even these degrade gracefully and are usable without
>> JS).
>> See http://html-formfu.googlecode.com/svn/trunk/HTML-FormFu-Dojo/
>>
>> Cheers,
>> Carl
>>
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> 
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