Setup models for friends

app/models/friendship.rb

@@ -0,0 +1,4 @@
+class Friendship < ActiveRecord::Base
+  belongs_to :user
+  belongs_to :friend, class_name: 'User'
+end

app/models/user.rb

@@ -1,4 +1,7 @@
 class User < ActiveRecord::Base
+  has_many :friendships
+  has_many :friends, through: :friendships
+
   def self.from_omniauth(auth)
     where(provider: auth[:provider], uid: auth[:uid]).first_or_create do |user|
       user.provider = auth[:provider]

db/migrate/20141015144022_create_friendships.rb

@@ -0,0 +1,10 @@
+class CreateFriendships < ActiveRecord::Migration
+  def change
+    create_table :friendships do |t|
+      t.integer :user_id
+      t.integer :friend_id
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,14 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20141002202749) do
+ActiveRecord::Schema.define(version: 20141015144022) do
+
+  create_table "friendships", force: true do |t|
+    t.integer  "user_id"
+    t.integer  "friend_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
 
   create_table "users", force: true do |t|
     t.string   "provider"