[Seaside] Re: Multiple submit buttons/links?

[Boris Popov]

Carl Gundel wrote:
>> How can I create more than one button or link on a page that causes the
>> callbacks to be invoked for each component, even for pages that are
> composed
>> of one or more non-nested forms?  Is there a simple way provided in the
>> framework?
> 
> Well, with some spelunking we managed to find
> #anchorWithAction:text:submitFormNamed: which lets us have multiple anchors
> and each can cause a submit.  These are links but using CSS we can make the
> links look like buttons.
> 
>     html attributes name: #activeStuff.
>     html form:
>         [ html textInputWithCallback: [:value | self name: value].
>             "here is a nested form which also has an anchor"
>             super renderContentOn: html].
>     html
>         anchorWithAction: [self doThis ]
>         text: 'this text'
>         submitFormNamed: #activeStuff.
>     html
>         anchorWithAction: [self doThat ]
>         text: 'that text'
>         submitFormNamed: #activeStuff.
> 
> Problem solved.  I hope this helps somebody.  :-)
> 

You can also do that with actual buttons. Attached is an extension of 
WASubmitButtonTag that borrows javascript snippet from an anchor and a 
demo application in Login.st,

Note that this all using the new render canvas API, which I highly 
recommend over the old way of doing things anyway.

Hope this helps,

-Boris
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