[Facebooker-talk] facebook_form_for + a little ajax?

[Zhao Lu]

Yep I was mixing them without thinking about it!  I guess I'm getting
confused reading on Prototype/Facebooker all at once.  I think I can
go either way, AJax or store it somewhere.  It sounds storing it in an
array as you have suggested is easier.  But I'll have to store it in a
ruby variable and I have to access to it (or at least I don't know how
to access it) from Javascript.

In case I'm not being articulate enough, this is what I mean:
I create this array in my form:
@rs_array = GiftCatalog.find(:all, :order => "name").map { |gc|
[gc.resource.resource_uri, gc.id]}

Then in my javascript function I pass in gc.id, cause that's what's
being selected in the drop-down.
Now how do you get the resource_uri that's corresponding to the gc.id
of @rs_array?

Zhao

On Thu, Sep 11, 2008 at 2:13 PM, Mike Mangino
<mmangino at elevatedrails.com> wrote:
> 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
>
>
>
>



-- 
Zhao