Is there a way to redirect from one controller action to another without a server trip?

rubyonrails-talk
1

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

2

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

3

something like

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

?

(preserving the params would be a sweet bonus :slight_smile:

4

something like

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

=> params Nope, I hope you cant call another controller action like this.

5

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?

6

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