added associations for models

app/models/candidate.rb

 class Candidate < ApplicationRecord
+	belongs_to :position
 end

app/models/position.rb

+class Position < ApplicationRecord
+	has_many :candidates
+end

db/migrate/20160718135621_create_positions.rb

+class CreatePositions < ActiveRecord::Migration[5.0]
+  def change
+    create_table :positions do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  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: 20160718135122) do
+ActiveRecord::Schema.define(version: 20160718135621) do
 
   create_table "candidates", force: :cascade do |t|
     t.string   "first_name"
@@ -22,6 +22,12 @@ ActiveRecord::Schema.define(version: 20160718135122) do
     t.datetime "updated_at",  null: false
   end
 
+  create_table "positions", force: :cascade do |t|
+    t.string   "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "users", force: :cascade do |t|
     t.string   "email",                  default: "", null: false
     t.string   "encrypted_password",     default: "", null: false

test/fixtures/positions.yml

+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+
+two:
+  name: MyString

test/models/position_test.rb

+require 'test_helper'
+
+class PositionTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end