class CreateActiveAdminComments < ActiveRecord::Migration[6.0] def self.up create_table :active_admin_comments do |t| t.string :namespace t.text :body t.references :resource, polymorphic: true t.references :author, polymorphic: true t.timestamps end add_index :active_admin_comments, [:namespace] end def self.down drop_table :active_admin_comments end end