Add author user to related content

app/models/related_content.rb

@@ -5,6 +5,7 @@ class RelatedContent < ActiveRecord::Base
   acts_as_paranoid column: :hidden_at
   include ActsAsParanoidAliases
 
+  belongs_to :author, class_name: 'User', foreign_key: 'author_id'
   belongs_to :parent_relationable, polymorphic: true, touch: true
   belongs_to :child_relationable, polymorphic: true, touch: true
   has_one :opposite_related_content, class_name: 'RelatedContent', foreign_key: :related_content_id

db/migrate/20171220010000_add_author_to_related_content.rb

@@ -0,0 +1,5 @@
+class AddAuthorToRelatedContent < ActiveRecord::Migration
+  def change
+    add_column :related_contents, :author_id, :integer
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20171220002802) do
+ActiveRecord::Schema.define(version: 20171220010000) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -874,6 +874,7 @@ ActiveRecord::Schema.define(version: 20171220002802) do
     t.datetime "updated_at"
     t.integer  "related_content_scores_count", default: 0
     t.datetime "hidden_at"
+    t.integer  "author_id"
   end
 
   add_index "related_contents", ["child_relationable_type", "child_relationable_id"], name: "index_related_contents_on_child_relationable", using: :btree