class CreateMeetings < ActiveRecord::Migration def change create_table :meetings do |t| t.string :name t.text :desc t.boolean :intern, :default=>true t.references :parent, :polymorphic=>{:default=>'Thema'} t.references :meetingtyp t.timestamps end add_index :meetings, :parent_id add_index :meetings, :parent_type add_index :meetings, :meetingtyp_id end end