Add model UserOmniauth

app/models/user.rb

@@ -17,6 +17,8 @@ class User < ApplicationRecord
 
   belongs_to :account
 
+  has_many :user_omniauths, dependent: :restrict_with_exception
+
   validates :account_id, uniqueness: true
 
   before_validation do

app/models/user_omniauth.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class UserOmniauth < ApplicationRecord
+  belongs_to :user
+
+  validates :provider, presence: true, uniqueness: { scope: :remote_id }
+  validates :remote_id, presence: true
+  validates :email, presence: true
+end

db/migrate/20181204030414_create_user_omniauths.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CreateUserOmniauths < ActiveRecord::Migration[5.2]
+  def change
+    create_table :user_omniauths do |t|
+      t.timestamps null: false
+
+      t.references :user, foreign_key: true
+      t.string :provider,  null: false
+      t.string :remote_id, null: false
+      t.string :email,     null: false
+
+      t.index %i[remote_id provider], unique: true
+    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: 2018_12_04_030126) do
+ActiveRecord::Schema.define(version: 2018_12_04_030414) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -128,6 +128,17 @@ ActiveRecord::Schema.define(version: 2018_12_04_030126) do
     t.string "api_token", null: false
   end
 
+  create_table "user_omniauths", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.bigint "user_id"
+    t.string "provider", null: false
+    t.string "remote_id", null: false
+    t.string "email", null: false
+    t.index ["remote_id", "provider"], name: "index_user_omniauths_on_remote_id_and_provider", unique: true
+    t.index ["user_id"], name: "index_user_omniauths_on_user_id"
+  end
+
   create_table "users", force: :cascade do |t|
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
@@ -163,5 +174,6 @@ ActiveRecord::Schema.define(version: 2018_12_04_030126) do
   add_foreign_key "passport_confirmations", "accounts"
   add_foreign_key "passport_confirmations", "passports"
   add_foreign_key "passport_maps", "passports"
+  add_foreign_key "user_omniauths", "users"
   add_foreign_key "users", "accounts"
 end

factories/user_omniauths.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :user_omniauth do
+    association :user
+
+    provider { 'github' }
+    remote_id { SecureRandom.hex }
+    email { Faker::Internet.email }
+  end
+end

spec/models/user_omniauth_spec.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe UserOmniauth do
+  subject { create :user_omniauth }
+
+  pending "add some examples to (or delete) #{__FILE__}"
+end