class CreatePrinterJobs < ActiveRecord::Migration[4.2] def change create_table :printer_jobs do |t| t.references :order t.string :document, null: false t.integer :created_by_user_id, null: false t.integer :finished_by_user_id t.datetime :finished_at, index: true end create_table :printer_job_updates do |t| t.references :printer_job, null: false t.datetime :created_at, null: false t.string :state, null: false t.text :message end add_index :printer_job_updates, %i[printer_job_id created_at] end end