Initial release of Discourse

lib/discourse_observer.rb

@@ -0,0 +1,48 @@
+#
+# Support delegating after_create to an appropriate helper for that class name.
+# For example, an observer on post will call after_create_post if that method
+# is defined.
+#
+# It does this after_commit by default, and contains a hack to make this work
+# even in test mode.
+#
+class DiscourseObserver < ActiveRecord::Observer
+
+  def after_create_delegator(model)
+    observer_method = :"after_create_#{model.class.name.underscore}"
+    send(observer_method, model) if respond_to?(observer_method)    
+  end
+    
+  def after_destroy_delegator(model)
+    observer_method = :"after_destroy_#{model.class.name.underscore}"
+    send(observer_method, model) if respond_to?(observer_method)
+  end
+
+end
+
+if Rails.env.test?
+
+  # In test mode, call the delegator right away
+  class DiscourseObserver < ActiveRecord::Observer
+    alias_method :after_create, :after_create_delegator
+    alias_method :after_destroy, :after_destroy_delegator    
+  end
+
+else
+
+  # Outside of test mode, use after_commit
+  class DiscourseObserver < ActiveRecord::Observer
+    def after_commit(model)
+      if model.send(:transaction_include_action?, :create)
+        after_create_delegator(model)
+      end
+
+      if model.send(:transaction_include_action?, :destroy)
+        after_destroy_delegator(model)
+      end
+      
+    end
+  end
+
+end
+