class CreateEventLogs < ActiveRecord::Migration def self.up create_table :event_logs do |t| t.references :user t.string :user_name t.references :object, polymorphic: true t.string :object_name t.string :ip t.string :kind t.string :protocol t.string :controller t.string :action t.text :message t.timestamps end # add_index :event_logs, :user_id # add_index :event_logs, [:object_id, :object_type] end def self.down drop_table :event_logs end end