Redirect after sign in to previous page (unless it's a sign in/up/etc page)

app/controllers/application_controller.rb

@@ -10,10 +10,18 @@ class ApplicationController < ActionController::Base
   rescue_from ActionController::RoutingError, with: :not_found
   rescue_from ActiveRecord::RecordNotFound, with: :not_found
 
+  before_filter :store_current_location, :unless => :devise_controller?
+
   def raise_not_found
     raise ActionController::RoutingError, "No route matches #{params[:unmatched_route]}"
   end
 
+  private
+
+  def store_current_location
+    store_location_for(:user, request.url)
+  end
+
   protected
 
   def not_found