FIX: Users can edit posts when they've reached the `newuser_max_replies_per_topic` threshold.

lib/validators/post_validator.rb

@@ -42,7 +42,7 @@ class Validators::PostValidator < ActiveModel::Validator
   end
 
   def max_posts_validator(post)
-    if post.acting_user.present? && post.acting_user.posted_too_much_in_topic?(post.topic_id)
+    if post.new_record? && post.acting_user.present? && post.acting_user.posted_too_much_in_topic?(post.topic_id)
       post.errors.add(:base, I18n.t(:too_many_replies))
     end
   end

spec/components/validators/post_validator_spec.rb

@@ -31,6 +31,13 @@ describe Validators::PostValidator do
       expect(post.errors.count).to be > 0
     end
 
+    it "should be allowed to edit when the user has posted too much" do
+      post.user.stubs(:posted_too_much_in_topic?).returns(true)
+      post.expects(:new_record?).returns(false)
+      validator.max_posts_validator(post)
+      expect(post.errors.count).to be(0)
+    end
+
     it "should be valid when the user hasn't posted too much" do
       post.user.expects(:posted_too_much_in_topic?).returns(false)
       validator.max_posts_validator(post)