Extract ActionController rescue templates into Rescue and ShowExceptions middleware.

This commit breaks all exception catching plugins like ExceptionNotifier. These plugins should be rewritten as middleware instead overriding Controller#rescue_action_in_public.

1 files changed, 14 insertions, 0 deletions

diff --git a/actionpack/lib/action_dispatch/middleware/rescue.rb b/actionpack/lib/action_dispatch/middleware/rescue.rb
new file mode 100644
index 0000000000..1456825526
--- /dev/null
+++ b/actionpack/lib/action_dispatch/middleware/rescue.rb
@@ -0,0 +1,14 @@
+module ActionDispatch
+  class Rescue
+    def initialize(app, rescuer)
+      @app, @rescuer = app, rescuer
+    end
+
+    def call(env)
+      @app.call(env)
+    rescue Exception => exception
+      env['action_dispatch.rescue.exception'] = exception
+      @rescuer.call(env)
+    end
+  end
+end