Allow post disapprovals to be edited

app/policies/post_disapproval_policy.rb

@@ -9,10 +9,22 @@ class PostDisapprovalPolicy < ApplicationPolicy
     user.is_moderator? || record.user_id == user.id
   end
 
-  def permitted_attributes
+  def permitted_attributes_for_create
     [:post_id, :reason, :message]
   end
 
+  def permitted_attributes_for_update
+    [:reason, :message]
+  end
+
+  def edit?
+    update?
+  end
+
+  def update?
+    unbanned? && record.post.in_modqueue? && record.user_id == user.id
+  end
+
   def api_attributes
     attributes = super
     attributes -= [:user_id] unless can_view_creator?