[#923] OAuth: prototype of sign in / sign up with Twitter.

priv/repo/migrations/20190315101315_add_auth_provider_and_auth_provider_uid_to_users.exs

@@ -0,0 +1,12 @@
+defmodule Pleroma.Repo.Migrations.AddAuthProviderAndAuthProviderUidToUsers do
+  use Ecto.Migration
+
+  def change do
+    alter table(:users) do
+      add :auth_provider, :string
+      add :auth_provider_uid, :string
+    end
+
+    create unique_index(:users, [:auth_provider, :auth_provider_uid])
+  end
+end