respond_with should allow to render a template outside of the controller action

[itkin]

Hello,

I was thinking it may be cool to be able to render a template file instead of a controller action. Would play nice for specific nested resource use cases.

Since Rails allow this the change would be pretty trivial : line 203 of responder.rb

elsif has_errors? && default_action
  render :action => default_action
#by 
elsif has_errors? && default_action
  render default_action

In order to allow this kind of behavior :

respond_with @my_instance, action: '/my_other_instances/show', location: my_other_instance_path(@my_other_instance)

What do you think ?

[lucasmazza]

I think it's an acceptable change to make the responder more flexible, but I'm not 100% sure if it would have any bad side effects in the rest of the responder logic that takes the current action in account to set the flash messages or do redirections - maybe if we introduce a new view option would help avoid these issues?

Feel free to set up a PR so we can discuss on top of the code :)