[Facebooker-talk] facebook_form_for + a little ajax?

[Mike Mangino]

I think you're mixing javascript and ruby:

  uri = GiftCatalog.find(gc_id).resource.resource_uri

That's Ruby, right?

You'll need to either use ajax to get that data or store it in the  
page somewhere. Maybe you could keep an array that maps between gc_id  
values and their URLs.

I often will prototype my ajax stuff outside of Facebook. It's easier  
to debug that way. Once it's working I convert it to Facebook.

Mike
On Sep 11, 2008, at 3:06 PM, Zhao Lu wrote:

> Thanks for your answer Mike.  I was calling select_tag by itself
> without the wrapping,
> which is indeed what I need to do.  Now I have passed that having some
> problem with
> getting hold of a ruby class I defined from javascript.  I can't seem
> to find an example
> online.  Here's my code:
>
> <p id="resource" >&nbsp;</p>
> <% facebook_form_for :facebook_gift, FacebookGift.new, :url =>
> facebook_gifts_path do |f| %>
>  <%=
>  @gift_catalog = GiftCatalog.find(:all, :order => "name").map { |gc|
> [gc.resource.file_name, gc.id]}
>  f.text select_tag(:gift_catalog_id,
> options_for_select(@gift_catalog), :onchange =>
> "update_gift_display(this.getValue(), 'resource');")
>  %>
> //more code here
> <%end%>
>
> I have some javascript on the same page:
>
> <script>
>  function update_gift_display(gc_id, update_widget) {
>    uri = GiftCatalog.find(gc_id).resource.resource_uri
>    $(update_widget).setTextValue(uri)
>  }
> </script>
>
> So what I'm trying to achieve is for user to select a gift_catalog_id,
> then I will get the url to
> the actual gift (which is linked to gift_catalog).  But GiftCatalog is
> not available in the javascript function.
> I feel that I'm not on the right track for this.  Any suggestion would
> be greatly appreciated.
>
> Zhao
>
> On Thu, Sep 11, 2008 at 5:30 AM, Mike Mangino
> <mmangino at elevatedrails.com> wrote:
>> Are you calling form.select_tag? That won't work. select_tag is not  
>> a method
>> on the form builder (this is true any time you use form_for in rails)
>>
>> You can do form.text select_tag... to wrap a normal select inside a  
>> facebook
>> form.
>>
>> Mike
>> On Sep 11, 2008, at 1:45 AM, Zhao Lu wrote:
>>
>>> Hello Everyone,
>>>
>>> I'm using a facebook_form_for which is bound to a model.  In the  
>>> form
>>> I have a form.select which is populated with an array of the names  
>>> of
>>> images.
>>> Whenever I change the selection I'd like to display the image on the
>>> same page.  I tried to change form.select to select_tag but that
>>> doesn't seem to play well with facebook_form_for.  I'm pretty  
>>> confused
>>> as to how to approach this.  Any suggestion would be appreciated.
>>>
>>> --
>>> Zhao
>>> _______________________________________________
>>> Facebooker-talk mailing list
>>> Facebooker-talk at rubyforge.org
>>> http://rubyforge.org/mailman/listinfo/facebooker-talk
>>
>> --
>> Mike Mangino
>> http://www.elevatedrails.com
>>
>>
>>
>>
>
>
>
> -- 
> Zhao

--
Mike Mangino
http://www.elevatedrails.com