1 files changed, 14 insertions, 0 deletions
diff --git a/app/controllers/concerns/control_flow.rb b/app/controllers/concerns/control_flow.rb
new file mode 100644
index 000000000..0f41a1cda
--- /dev/null
+++ b/app/controllers/concerns/control_flow.rb
@@ -0,0 +1,14 @@
+module ControlFlow
+  FinishAction = Class.new RuntimeError
+
+  def self.included into
+    into.rescue_from FinishAction, with: :catch_finish_action
+  end
+
+  # Allow to exit locally inside an action after rendering (especially in error cases)
+  def catch_finish_action; end
+
+  def finish_action! msg = 'finish action'
+    raise FinishAction, msg
+  end
+end