Rails - Feb 2007 - javascript disabled?

Hi,

I''d like to know what''s the best way to find out in RoR if the
user''s
browser has javascript turned off. I know some of you may yell at me for
not degrading but my application must have JS on and I''d like to
redirect and display a "sorry" message if JS is off. I saw some posts
regarding using <noscript> tag. is that the way to go?

thanks!
Alan.

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Hi Alan,

Alan wrote:
>
> I''d like to know what''s the best way to
> find out in RoR if the user''s browser has
> javascript turned off.
I''ve got a situation I''m handling exactly the same way.  In
the controller:

def check_js
  respond_to do |wants|
    wants.html {redirect_to :action => ''sorry''}
    wants.js {
        render :update do |page|
          page.redirect_to :controller => ''actor'', :action
=> ''edit_patient''
        end
    }
  end
end

It''s important that the responses be in line with the request.  So the
html
branch needs to respond with html, and the js branch needs to respond with 
js.  You can use an RJS view, or do the render in the controller like above. 
But you can''t render html in the wants.js response or the respond_to
won''t
work.

hth,
Bill 



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Bill Walton wrote:
> Hi Alan,
> 
> Alan wrote:
>>
>> I''d like to know what''s the best way to
>> find out in RoR if the user''s browser has
>> javascript turned off.
> 
> I''ve got a situation I''m handling exactly the same way. 
In the
> controller:
> 
> def check_js
>   respond_to do |wants|
>     wants.html {redirect_to :action => ''sorry''}
>     wants.js {
>         render :update do |page|
>           page.redirect_to :controller => ''actor'',
:action =>
> ''edit_patient''
>         end
>     }
>   end
> end
> 
> It''s important that the responses be in line with the request.  So
the
> html
> branch needs to respond with html, and the js branch needs to respond 
> with
> js.  You can use an RJS view, or do the render in the controller like 
> above.
> But you can''t render html in the wants.js response or the
respond_to
> won''t
> work.
> 
> hth,
> Bill
thanks Bill! That''s a nice solution, I haven''t even known
about the
existance of "respond_to" before your answer. I''m going to
read some
more about it but what I''m looking for is a method which could be used 
as a ''before filter'' in application.rb so that the
"sorry, must have
javascript" page will be redirected to upon entry from any page of my 
site if JS is disabled. I''m wondering if this method above will work
for
this scenario...

Alan


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