DEV: prefer using ordering in relation over default scope

app/models/post.rb

@@ -48,7 +48,7 @@ class Post < ActiveRecord::Base
   has_many :post_details
 
   has_many :post_revisions
-  has_many :revisions, foreign_key: :post_id, class_name: 'PostRevision'
+  has_many :revisions, -> { order(:number) }, foreign_key: :post_id, class_name: 'PostRevision'
 
   has_many :user_actions, foreign_key: :target_post_id
 

app/models/post_revision.rb

@@ -4,8 +4,6 @@ class PostRevision < ActiveRecord::Base
   belongs_to :post
   belongs_to :user
 
-  default_scope { order('number ASC') }
-
   serialize :modifications, Hash
 
   after_create :create_notification

spec/models/post_spec.rb

@@ -1095,4 +1095,11 @@ describe Post do
     expect(hidden_topic.visible).to eq(false)
   end
 
+  it "automatically orders post revisions by number ascending" do
+    post = Fabricate(:post)
+    post.revisions.create!(user_id: 1, post_id: post.id, number: 2)
+    post.revisions.create!(user_id: 1, post_id: post.id, number: 1)
+    expect(post.revisions.pluck(:number)).to eq([1, 2])
+  end
+
 end