oauth update

db/migrate/20161108224701_add_unique_id_to_users.rb

@@ -0,0 +1,21 @@
+class AddUniqueIdToUsers < ActiveRecord::Migration[5.0]
+  def up
+    add_column :users, :encrypted_id, :string
+
+    User.all.each do |user|
+      user.set_encrypted_id
+      user.save!
+    end
+
+    change_column_null :users, :encrypted_id, false
+
+    add_index :users, :encrypted_id, unique: true
+    remove_index :users, :username
+  end
+
+  def down
+    add_index :users, :username, unique: true
+    remove_index :users, :encrypted_id
+    remove_column :users, :encrypted_id
+  end
+end

db/schema.rb

@@ -10,19 +10,20 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20161017203809) do
+ActiveRecord::Schema.define(version: 20161108224701) do
 
   create_table "users", force: :cascade do |t|
-    t.string   "provider",   null: false
-    t.string   "uid",        null: false
+    t.string   "provider",     null: false
+    t.string   "uid",          null: false
     t.string   "name"
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
+    t.datetime "created_at",   null: false
+    t.datetime "updated_at",   null: false
     t.string   "username"
+    t.string   "encrypted_id", null: false
+    t.index ["encrypted_id"], name: "index_users_on_encrypted_id", unique: true
     t.index ["provider", "uid"], name: "index_users_on_provider_and_uid", unique: true
     t.index ["provider"], name: "index_users_on_provider"
     t.index ["uid"], name: "index_users_on_uid"
-    t.index ["username"], name: "index_users_on_username", unique: true
   end
 
 end