Rails - Sep 2006 - Detecting whether response.body is html / javascript?

I''ve got an after_filter which adds code to response.body for popping  
up a flash - it''s kinda handy for having flash messages appear  
automatically with each ajax request, without having to explicitly  
include the flash code in every single action...

However, I''m running into problems with detecting whether I''m
returning js or html.  If I''m using an rjs, then I can just add the  
javascript code on the end.  If I''m using a partial, then I need to  
wrap it in script tags.  But I can''t figure out how to detect which  
one I should be using.
Is there any way for my controller to detect whether the response is  
going to be executed (js) or just inserted (html)?

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Hi Jonathan,

Jonathan del Strother wrote:
> I''m running into problems with detecting whether
> I''m  returning js or html.
Check out the respond_to method.  A word or caution... there''s a bug
that
precludes the use of '':disable_with'' if you''re using
a form_remote_tag to
initiate the server-side action.  There''s a recent thread where I was
having
a problem with respond_to and a couple of Railers pointed it out to me.

hth,
Bill


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On 13 Sep 2006, at 13:21, Bill Walton wrote:
> Hi Jonathan,
>
> Jonathan del Strother wrote:
>
>> I''m running into problems with detecting whether
>> I''m  returning js or html.
>
> Check out the respond_to method.  A word or caution... there''s a  
> bug that
> precludes the use of '':disable_with'' if you''re
using a
> form_remote_tag to
> initiate the server-side action.  There''s a recent thread where I
> was having
> a problem with respond_to and a couple of Railers pointed it out to  
> me.
Mmm, re-reading my email, I wasn''t very clear - I''m already
using
respond_to to only insert the flash popup into ajax-y responses.  My  
problem boils down to figuring out whether I''m using Ajax.Updater or  
Ajax.Request.  Looking at the prototype code, I''m not so convinced  
that this is possible on the server side.  Maybe I could modify  
Ajax.Updater to add a parameter I could detect on the server...



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I eventually got around it by tweaking prototype.js to send the
expected return type in the headers.  Seems to work ok, though I''d be
interested in any alternate solutions


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