stevenbeales / mental-test

db/migrate/20180227035049_create_assessment_instruments.rb

# frozen_string_literal: true

# Creates table for association class between assessments and instruments
class CreateAssessmentInstruments < ActiveRecord::Migration[5.1]

This code seems to be duplicated in your project.

  def change
    create_table :assessment_instruments do |t|
      t.references :assessment, null: false, foreign_key: true
      t.references :instrument, null: false, foreign_key: true
      t.timestamps null: false, default: -> { 'CURRENT_TIMESTAMP' }
    end

    add_index :assessment_instruments, 
              %i[assessment_id instrument_id], 
              unique: true,
              name: 'index_by_assessment_instrument'
  end
end