Rails - Feb 2006 - detecting whether a request comes from render_component

Hi All,

Anyone know if there is a way to detect whether a request came from a
render_component call? There isn''t anything obvious from looking at the
source, but it would be useful as I have set up a logging filter in my
application.rb, and I''d prefer to exclude all component renders, since
they just add extra lines to my log (I guess I could exclude identical
rows at the db level).

I''m thinking of something like the xhr? method that allows a controller
to check whether a request came from an ajax submission.

I was guessing that the same check that catches the double_render error
might be used, but the check it uses (performed?) is a private method. I
guess I could try re-rendering the same controller/action and test
whether it leads to a DoubleRender error, but I imagine that would be
expensive.

Ideally some kind of :component => true element/value in the options
would be cool ...

CHEERS> SAM

I never found a built in solution like xhr? to do this with. I always  
just added a params flag and checked for that in the action:

render_component :controller => ''foo'', :Action =>
''bar'', :component
=> true

The you can check for params[:component] and act accordingly.

-Ezra

On Feb 1, 2006, at 8:37 AM, Sam Joseph wrote:
> Hi All,
>
> Anyone know if there is a way to detect whether a request came from a
> render_component call? There isn''t anything obvious from looking
at
> the
> source, but it would be useful as I have set up a logging filter in my
> application.rb, and I''d prefer to exclude all component renders,
since
> they just add extra lines to my log (I guess I could exclude identical
> rows at the db level).
>
> I''m thinking of something like the xhr? method that allows a  
> controller
> to check whether a request came from an ajax submission.
>
> I was guessing that the same check that catches the double_render  
> error
> might be used, but the check it uses (performed?) is a private  
> method. I
> guess I could try re-rendering the same controller/action and test
> whether it leads to a DoubleRender error, but I imagine that would be
> expensive.
>
> Ideally some kind of :component => true element/value in the options
> would be cool ...
>
> CHEERS> SAM
>
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>
-Ezra Zygmuntowicz
WebMaster
Yakima Herald-Republic Newspaper
ezra@yakima-herald.com
509-577-7732