Question

I have an error handling method in my ApplicationController:

rescue_from ActiveRecord::RecordNotFound, :with => :not_found  def not_found(exception)   @exception = exception   render :template => '/errors/not_found', :status => 404 end 

In RAILS_ROOT/app/views/errors/not_found.html.erb, I have this:

<h1>Error 404: Not Found</h1> <%= debug @exception %> 

But @exception is always nil there. I’ve tried debug assigns, but that’s always {}. Do assigns not get copied when calling render :template? If so, how can I get them?

I’m on edge Rails.

Answer 1

That’s odd, and I don’t know why. As an alternative, have you tried passing the exception as an explicit local?

def not_found(exception)   render :template => '/errors/not_found',           :status   => 404,           :locals   => {:exception => exception} end 

and the view:

<h1>Error 404: Not Found</h1> <%= debug exception %> <!-- Note no '@' -->