Rails - May 2006 - link_to - Going Back without knowing the action name.

Hi,

I have a bunch of link_to''s in my code that are simple Back buttons
that
should basically just go to the previous request.  Is there a way of doing
this without specifying the action to execute?  The problem is, sometimes I
may render the same view through separate actions so I wouldn''t know
which
action to go back to.

Thanks.
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On May 8, 2006, at 3:15 PM, Sam Donaldson wrote:
> I have a bunch of link_to''s in my code that are simple Back
buttons
> that should basically just go to the previous request.  Is there a  
> way of doing this without specifying the action to execute?  The  
> problem is, sometimes I may render the same view through separate  
> actions so I wouldn''t know which action to go back to.
Consider passing a :return_to parameter or session variable along  
with helper methods to manage your back links.  For example:

class ApplicationController < ActionController::Base
   helper_method :url_back, :link_back

   protected
     # Try params[:return_to] and session[:return_to].
     def url_back(options = {})
       params[:return_to] or session[:return_to] or options
     end

     # Redirect back to where we came.
     def redirect_back(options = {})
       redirect_to(url_back)
     end

     # Link back to where we came.
     def link_back(name, fallback_options = {}, html_options = nil)
       link_to name, url_back(fallback_options), html_options
     end
end


Best,
jeremy

>      # Link back to where we came.
>      def link_back(name, fallback_options = {}, html_options = nil)
>        link_to name, url_back(fallback_options), html_options
>      end

I tried this and am getting an "undefined method `link_to'' . .
." error
when I try this. Any suggestions?

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>      # Link back to where we came.
>      def link_back(name, fallback_options = {}, html_options = nil)
>        link_to name, url_back(fallback_options), html_options
>      end

I tried this and am getting an "undefined method `link_to'' . .
." error.
Any suggestions?

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Posted via http://www.ruby-forum.com/.

@session[''return-to''] = @request.request_uri
      # as apposed to redirect to \ redirect to URL
      redirect_to_url @session[''return-to'']
      #to reset the session-return-to
      @session[''return-to''] = nil


haven''t checked this, but i hope it works/helps,

shai

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