Reduced complexity of admin flags controller, split up into methods, moved reports into model.

app/controllers/application_controller.rb

@@ -122,21 +122,24 @@ class ApplicationController < ActionController::Base
     @guardian ||= Guardian.new(current_user)
   end
 
+
+  def serialize_data(obj, serializer, opts={})
+    # If it's an array, apply the serializer as an each_serializer to the elements
+    serializer_opts = {scope: guardian}.merge!(opts)
+    if obj.is_a?(Array)
+      serializer_opts[:each_serializer] = serializer
+      ActiveModel::ArraySerializer.new(obj, serializer_opts).as_json
+    else
+      serializer.new(obj, serializer_opts).as_json
+    end
+  end
+
   # This is odd, but it seems that in Rails `render json: obj` is about
   # 20% slower than calling MultiJSON.dump ourselves. I'm not sure why
   # Rails doesn't call MultiJson.dump when you pass it json: obj but
   # it seems we don't need whatever Rails is doing.
   def render_serialized(obj, serializer, opts={})
-
-    # If it's an array, apply the serializer as an each_serializer to the elements
-    serializer_opts = {scope: guardian}.merge!(opts)
-    if obj.is_a?(Array)
-      serializer_opts[:each_serializer] = serializer
-      render_json_dump(ActiveModel::ArraySerializer.new(obj, serializer_opts).as_json)
-    else
-      render_json_dump(serializer.new(obj, serializer_opts).as_json)
-    end
-
+    render_json_dump(serialize_data(obj, serializer, opts))
   end
 
   def render_json_dump(obj)