Rails - Dec 2005 - rss double render problem

I have a simple method

def activities
    @headers["Content-Type"] = "application/xml;
charset=utf-8"
   
    activities = get_activities
    @feed = FeedTools::Feed.new
    @feed.title = "Activities"
    @feed.author = "Cogini"
    @feed.copyright = "Cogini 2005-2006"
    @feed.link = "http://localhost:3000/admin/customers/"
    @feed.content = "Activities"
    activities.each do |a|
      @feed_item = FeedTools::FeedItem.new
      @feed_item.feed = @feed
      @feed_item.content = activity_link(a)
      @feed.entries << @feed_item
    end
    render :inline => "<?xml version=''1.0'' 
encoding=''UTF-8''?>\n#{@feed.build_xml(''rss'',
2.0)}"
  end

That builds a feed from a set of fixed values + some dynamic data, but I 
cannot get it to build the correct rss. 

@feed.build_xml returns a string - not the XMLBuilder as promised, so I 
simply concatenated the xml header and tried to render, but now I get a 
DoubleRenderError - I can''t see anywhere else in this where I render 
previously

I''ve also looked at the xml howto and the feedtools tutorial, neither
of
them adequately explain how to do what I want - indeed following them 
hasn''t brought me any closer to getting this working

Kev

On Wed, 2005-12-14 at 15:22 +0700, Kev Jackson wrote:
> I have a simple method
> 
> def activities
>     @headers["Content-Type"] = "application/xml;
charset=utf-8"
>    
>     activities = get_activities
>     @feed = FeedTools::Feed.new
>     @feed.title = "Activities"
>     @feed.author = "Cogini"
>     @feed.copyright = "Cogini 2005-2006"
>     @feed.link = "http://localhost:3000/admin/customers/"
>     @feed.content = "Activities"
>     activities.each do |a|
>       @feed_item = FeedTools::FeedItem.new
>       @feed_item.feed = @feed
>       @feed_item.content = activity_link(a)
>       @feed.entries << @feed_item
>     end
>     render :inline => "<?xml version=''1.0'' 
>
encoding=''UTF-8''?>\n#{@feed.build_xml(''rss'',
2.0)}"
>   end
> 
> That builds a feed from a set of fixed values + some dynamic data, but I 
> cannot get it to build the correct rss. 
> 
> @feed.build_xml returns a string - not the XMLBuilder as promised, so I 
> simply concatenated the xml header and tried to render, but now I get a 
> DoubleRenderError - I can''t see anywhere else in this where I
render
> previously
> 
> I''ve also looked at the xml howto and the feedtools tutorial,
neither of
> them adequately explain how to do what I want - indeed following them 
> hasn''t brought me any closer to getting this working
> 
> Kev
Three things that might help.

I think the problem is that you''re doing an inline render, but the
method is finishing and it still wants to use the view template.

Solution one: move your inline render to the view, since you already
have @feed available.

Solution two: Not sure if this will work exactly, but what happens if
you render :text instead of :inline?

Solution three: Also not sure if this is the issue or not, but if you
return false from your action, I believe it should suppress rendering of
the template.

- Jamie