Rails - Jan 2006 - How to render from a different controller

My code is something like this.

class FirstController < ApplicationController

def foo
    #some processing
    render (:controller => ''second'', :action =>
''index'')
end

end


I tried using both render and redirect but it seems it''s not possible
to
send the control from within a controller  to some other controller. Am I
missing something here?

Thanks.
-=- Neeraj
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Are your redirect_to or render statements the last line in your controller
method that is performing the redirect?  Are you always redirecting, or
doing it conditionally?  redirect_to and render do not return a value, so
your controller method will continue to run after calling them (if there are
additional statements to process), unless you do something like the
following:

redirect_to :controller => ''controller'', :action =>
''myAction'' and return

I''m a relative rails newb, so I could be horribly misleading you, but I
ran
into a similar problem and the above suggestion took care of it...
hopefully someone with more experience can weigh in here for a definitive
answer.

-Will

On 1/14/06, Neeraj Kumar <neeraj.jsr@gmail.com>
wrote:
>
> My code is something like this.
>
> class FirstController < ApplicationController
>
> def foo
>     #some processing
>     render (:controller => ''second'', :action =>
''index'')
> end
>
> end
>
>
> I tried using both render and redirect but it seems it''s not
possible to
> send the control from within a controller  to some other controller. Am I
> missing something here?
>
> Thanks.
> -=- Neeraj
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>
>
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On Sat, Jan 14, 2006 at 03:08:15PM -0500, Neeraj Kumar
wrote:
> My code is something like this.
> 
> class FirstController < ApplicationController
> 
> def foo
>     #some processing
>     render (:controller => ''second'', :action =>
''index'')
> end
> 
> end
> 
> I tried using both render and redirect but it seems it''s not
possible to
> send the control from within a controller  to some other controller. Am I
> missing something here?
the ''render'' method is for specifying a view template to
render, so you
could go with

render ''second/index''

If *all* you want to do is use the view from another controller action. 
However, if you wanted to use all of the code of the other controller,
you''d
need to do something like this in your *view* for first/foo:

<%= render_component :controller => ''second'', :action
=> ''index'' %>

I''ve found this useful for putting intelligent sidebars in my views
(where a
partial just won''t cut it).

It''s hard to make specific recommendations for your situation without
knowing more about what you''re trying to do.  What is this "#some
processing" you''re doing?  Why do you want to render another
controller''s
action?  For instance, if you just want to go to the other action, a quick

redirect_to :controller => ''second'', :action =>
''index'' and return

(as previously suggested) will do the trick.  If ''#some
processing'' is just
(for example) handling a POST request and saving some data, then
redirect_to is quite possibly what you want.

- Matt

Matthew Palmer wrote:
> If *all* you want to do is use the view from another controller action. 
> However, if you wanted to use all of the code of the other controller,
you''d
> need to do something like this in your *view* for first/foo:
>
> <%= render_component :controller => ''second'',
:action => ''index'' %>
>
> I''ve found this useful for putting intelligent sidebars in my
views (where a
> partial just won''t cut it).
>   
I''d be interested why you think a partial couldn''t be used for
your
intelligent sidebar. In my experience, partials can always be used, so a 
specific example when it can''t would be *very* useful for me.

-- stefan

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