Rails - Mar 2012 - Is there a way to redirect from one controller action to another without a server trip?

Hi

I want one controller action to invoke another action in another
controller, but I don''t want the overhead of a redirect_to response
which then generates another request to the correct action and
controller. Any suggestions?

Pieter

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Create object for that controller then call.

 class A
  def a1
   * invoke=B.new**
    invoke.action(args)*
  end
 end

 class B
  def action(args)
    something
  end
 end

regards,
Loganathan




On Thu, Mar 8, 2012 at 5:17 PM, Pieter Hugo
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> Hi
>
> I want one controller action to invoke another action in another
> controller, but I don''t want the overhead of a redirect_to
response
> which then generates another request to the correct action and
> controller. Any suggestions?
>
> Pieter
>
> --
> Posted via http://www.ruby-forum.com/.
>
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something like

render :controller => othercontroller, :action => :otheraction, :params 
=> params

?

(preserving the params would be a sweet bonus :)

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On Thu, Mar 8, 2012 at 5:25 PM, Pieter Hugo
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> something like
>
> render :controller => othercontroller, :action => :otheraction,
:params
> => params
>
*   Nope, I hope you cant call  another controller action like this.*
>
> ?
>
> (preserving the params would be a sweet bonus :)
>
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Thanks for the comments guys.

If there is not wasy way to bounce to another controller/action then 
there should be. Its available via redirect_to, and one can render the 
partials of another controllers actions, but it seems one cant quite 
just get the action code to execute.

My usage case is this:

I am writing a web based simple text chat app. People submit comments, 
calling the AddComment action, which updates the conversation, and 
renders the comment to the people having the conversations.

I want to build in some predefined keywords that will get recognised in 
the AddComment action, but will call another controller. Eg I have a 
documents controller with a AttachDoc action which gets called normally 
when the user clicks on the right button.

I now want to allow doc attachment from the commandline - So when 
someone types ''AttachDoc'' as a comment, controll should jump
to the
documentscontroller. Redirect_to will do the job, but with a unnecessary 
trip back to the user.

Still reading? thanks! Any suggestion?

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Without thinking too much about it, how about if you create another
class that both your controllers can use?

# This class processes your actions
class YourActionClass
  def your_action(params)
    # here you process your request
  end
end

# This is the controller you want to process the "redirect".
class ControllerA < ApplicationController
  def your_action
    your_action_instance = YourActionClass.new
    your_action_instance.your_action(your_parameters)
  end
end

# This is the controller you want to recognize your special cases and
redirect them.
class ControllerB < ApplicationController
  def action
    if special_case
      your_action_instance = YourActionClass.new
      your_action_instance.your_action(your_parameters)
      # maybe you can render something here?
    else
       # your regular stuff goes here.
    end
  end
end

On Mar 8, 6:47 am, Pieter Hugo
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> Hi
>
> I want one controller action to invoke another action in another
> controller, but I don''t want the overhead of a redirect_to
response
> which then generates another request to the correct action and
> controller. Any suggestions?
>
> Pieter
>
> --
> Posted viahttp://www.ruby-forum.com/.
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