migration and associations

completes #26

app/models/quiz.rb

@@ -2,6 +2,8 @@
 class Quiz < ApplicationRecord
   has_many :questions, -> { order(:sort) }
   has_many :candidates
+  has_many :reviewer_to_quizzes
+  has_many :reviewers, through: :reviewer_to_quizzes, source: :user
 
   validates :name, presence: true, uniqueness: true
   validates :dept, presence: true

app/models/reviewer_to_quiz.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+class ReviewerToQuiz < ApplicationRecord
+  belongs_to :user
+  belongs_to :quiz
+end

app/models/user.rb

@@ -1,7 +1,9 @@
 # frozen_string_literal: true
 class User < ApplicationRecord
   has_secure_password
-  has_many :candidates, foreign_key: "recruiter_id"
+  has_many :candidates, foreign_key: :recruiter_id
+  has_many :reviewer_to_quizzes
+  has_many :quizzes, through: :reviewer_to_quizzes
 
   validates :email, presence: true, uniqueness: true
   validates :name, presence: true

db/migrate/20160915164450_create_reviewer_to_quizzes.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+class CreateReviewerToQuizzes < ActiveRecord::Migration[5.0]
+  def change
+    create_table :reviewer_to_quizzes do |t|
+      t.integer :user_id, null: false
+      t.integer :quiz_id, null: false
+
+      t.timestamps
+    end
+    add_index :reviewer_to_quizzes, :quiz_id
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160826200610) do
+ActiveRecord::Schema.define(version: 20160915164450) do
 
   create_table "answers", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
     t.integer  "candidate_id"
@@ -65,6 +65,14 @@ ActiveRecord::Schema.define(version: 20160826200610) do
     t.string   "name"
   end
 
+  create_table "reviewer_to_quizzes", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
+    t.integer  "user_id",    null: false
+    t.integer  "quiz_id",    null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["quiz_id"], name: "index_reviewer_to_quizzes_on_quiz_id", using: :btree
+  end
+
   create_table "users", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
     t.string   "name"
     t.string   "email"

test/fixtures/reviewer_to_quizzes.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  user: reviewer
+  quiz: fed
+
+two:
+  user: reviewer2
+  quiz: fed

test/fixtures/users.yml

@@ -12,6 +12,12 @@ reviewer:
   password_digest: <%= BCrypt::Password.create("password", cost: 4) %>
   role: reviewer
 
+reviewer2:
+  name: David Reviewer
+  email: david.reviewer@mailinator.com
+  password_digest: <%= BCrypt::Password.create("password", cost: 4) %>
+  role: reviewer
+
 admin:
   name: Alan Admin
   email: alan.admin@mailinator.com

test/models/reviewer_to_quiz_test.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+require 'test_helper'
+
+class ReviewerToQuizTest < ActiveSupport::TestCase
+  test "the truth" do
+    assert ReviewerToQuiz
+  end
+end