class AddMutedUsers < ActiveRecord::Migration def change create_table :muted_users do |t| t.integer :user_id, null: false t.integer :muted_user_id, null: false t.timestamps end add_index :muted_users, [:user_id, :muted_user_id], unique: true add_index :muted_users, [:muted_user_id, :user_id], unique: true end end