Rails - May 2010 - getting the correct index in a ruby array in a javascript lo

So I''m very new to both ruby and javascript, but the basic problem is.
I
have a ruby array @events_this_month, and i''m running a javascript loop
that basically needs the information from this array. The problem is I
can''t seem to set the proper index for my ruby array. What I have looks
like this:


  for( var i = 0; i < 3; i++)
  {
       var title = ''<%= @events_this_month[i].title %>'';
    alert(title);
  }

I''ve also tried:

        <%= $j = 0 %>
  for( var i = 0; i < 3; i++)
  {
       var title = ''<%= @events_this_month[$j].title
%>'';
    alert(''<%= $j %>'');
                <%= $j = $j +1 %>
  }

Any suggestions on how I can access the correct index in my ruby array
during the javascript loop?
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You''re confusing server side and client side code. Javascript works
after a
webpage has been returned but Ruby works when a page is being fetched. So if
you want to be able to iterate over a bunch of values you''ll need to
create
a javascript array that contains the values of the Ruby array.

*If you want to convert it to a javascript array:*
http://api.rubyonrails.org/classes/ActionView/Helpers/JavaScriptHelper.html#M001761

I suggest you just make an array of titles and then pass it in via an
options array to your code or something to keep the view layer clean.

*So in your controller set:
*options[:title]
Equal to an array of the titles from your object array.

*Something like:*
var myEvents = <%= array_or_string_for_javascript(options[:title]) %>;

 for( var i = 0; i < myEvents.length; i++)
 {
alert (myEvents[i]);
}

Someone correct me if I''m explaining anything wrong or if there is
something
wrong with my syntax -- I''m beginning ruby and rails myself so I think
that''s the correct syntax.

Tim

On Sat, May 15, 2010 at 9:16 PM, Brandon Fratello
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>wrote:
> So I''m very new to both ruby and javascript, but the basic problem
is. I
> have a ruby array @events_this_month, and i''m running a javascript
loop
> that basically needs the information from this array. The problem is I
> can''t seem to set the proper index for my ruby array. What I have
looks
> like this:
>
>
>  for( var i = 0; i < 3; i++)
>  {
>       var title = ''<%= @events_this_month[i].title
%>'';
>    alert(title);
>  }
>
> I''ve also tried:
>
>        <%= $j = 0 %>
>  for( var i = 0; i < 3; i++)
>  {
>       var title = ''<%= @events_this_month[$j].title
%>'';
>    alert(''<%= $j %>'');
>                <%= $j = $j +1 %>
>  }
>
> Any suggestions on how I can access the correct index in my ruby array
> during the javascript loop?
> --
> Posted via http://www.ruby-forum.com/.
>
> --
> 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To unsubscribe from this group, send email to
>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>
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