Rails - Mar 2007 - How To Submit A JavaScript Array Via XHR?

Hello,

I would like to create a button that, when clicked, pulls a subset of  
fields out a form on the same page and sends those fields'' values as  
an array to the server as an XHR.

The server''s response would then be used to update another element on  
the page.

So far I have got a button that pulls the subset of fields from the  
form and bundles their values into an array.  But I don''t know how to  
submit this via XHR to the server.

My code looks like this:

   <%= button_to_function ''Calculate price'',
''bundle_order();'' %>

where bundle_order() is a JavaScript function I wrote in application.js.

Can anyone help?

Thanks and regards,
Andy Stewart

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On 30 Mar 2007, at 12:23, Andrew Stewart wrote:
> I would like to create a button that, when clicked, pulls a subset  
> of fields out a form on the same page and sends those fields''  
> values as an array to the server as an XHR.
>
> The server''s response would then be used to update another element
> on the page.
>
> So far I have got a button that pulls the subset of fields from the  
> form and bundles their values into an array.  But I don''t know how
> to submit this via XHR to the server.
I just worked out how to do this.  Here it is lest anyone else is  
interested:

1.  Make a JavaScript function that returns a hash of the elements  
you wish to submit (not an array as I originally did).  For example:

   public/javascripts/application.js:

     function subset() {
       p1 = $F(''dom-id-of-element-x'')
       p2 = $F(''dom-id-of-element-y'')
       return $H({ x: p1, y: p2 });
     }

2.  Use the link_to_remote helper and -- here''s the part I was  
missing before -- pass the :with key:

   app/views/your_controller/your_action.rhtml:

     <%= link_to_remote ''Do something...'',
                        :url    => {:action => ''foo''},
                        :update => ''dom-id-to-update'',
                        :with   => ''subset()'' %>

Hope that helps somebody.

Regards,
Andy Stewart

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---