andkjaer wrote:
> Hi,
> I have a question regarding rendering partials:
>
> I have this controller called twitter
>
> class TwitterController < ApplicationController
>
> def index
> @twitter_search = Twitter::Search.new('#rails')
> end
> end
>
> In the twitter index views i render a partial:
>
> <%= render :partial => "shared/twitterlist" %>
First of all you're relying on implicit instance variables in your
partials. You really shouldn't do that. The current version of Rails
automatically injects instance variable assigned in the controller into
partials. I believe, however, that this behavior has been deprecated and
may be removed in future versions of Rails. Instead you should
explicitly pass local data into the partial with :locals =>
@twitter_search, or similar technique.
> This work's fine for the Twitter index view, but when I call the
> render partial from another view like dashboard/index like this:
>
> <%= render :partial => "shared/twitterlist" %>
>
> I get this error:
>
> You have a nil object when you didn't expect it!
> You might have expected an instance of Array.
> The error occurred while evaluating nil.each
If you need that data available to pass into the shared partial then you
need to assign that data in the controller calling used for rendering
the view/partial.
> What am I doing wrong here?
> Is it even possible to share data across the views like that?
Keep in mind that instance variables set in controllers are only
available for one request/response cycle. Any data you need for a view
you should assign in the controller action used to render the view.
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