20140625115202_create_users_star_projects.rb

class CreateUsersStarProjects < ActiveRecord::Migration
  def change
    create_table :users_star_projects do |t|
      t.integer :project_id, null: false
      t.integer :user_id, null: false
      t.timestamps
    end

    add_index :users_star_projects, :user_id
    add_index :users_star_projects, :project_id
    add_index :users_star_projects, [:user_id, :project_id], unique: true
  end
end