Add a more generic build_from method to external

lib/sorcery/controller/submodules/external.rb

@@ -164,6 +164,20 @@ def create_and_validate_from(provider_name)
  return user
  end
 
+ def build_from(provider_name)
+ sorcery_fetch_user_hash provider_name
+ config = user_class.sorcery_config
+
+ attrs = user_attrs(@provider.user_info_mapping, @user_hash)
+
+ @user = user_class.new
+ attrs.each do |k,v|
+ @user.send(:"#{k}=", v)
+ end
+ @user.send(config.authentications_class.to_s.downcase.pluralize).build(config.provider_uid_attribute_name => @user_hash[:uid], config.provider_attribute_name => provider_name)
+ @user
+ end
+
  # this method automatically creates a new user from the data in the external user hash.
  # The mappings from user hash fields to user db fields are set at controller config.
  # If the hash field you would like to map is nested, use slashes. For example, Given a hash like:

spec/rails_app/app/controllers/sorcery_controller.rb

@@ -195,6 +195,17 @@ def test_create_from_provider
  redirect_to 'blu', alert: 'Failed!'
  end
  end
+
+ def test_build_from_provider
+ provider = params[:provider]
+ login_from(provider)
+ @user = build_from(provider)
+ if @user.save
+ redirect_to 'bla', notice: 'Success!'
+ else
+ redirect_to 'blu', alert: 'Failed!'
+ end
+ end
 
  def test_add_second_provider
  provider = params[:provider]

spec/rails_app/config/routes.rb

@@ -13,6 +13,7 @@
  get :test_logout_with_remember
  get :test_should_be_logged_in
  get :test_create_from_provider
+ get :test_build_from_provider
  get :test_add_second_provider
  get :test_return_to_with_external
  get :test_login_from

spec/shared_examples/controller_oauth2_shared_examples.rb

@@ -49,4 +49,20 @@
 
  end
  end
+
+ describe 'using build_from' do
+ before(:each) do
+ stub_all_oauth2_requests!
+ User.delete_all
+ Authentication.delete_all
+ end
+
+ it 'builds and saves a new user' do
+ sorcery_model_property_set(:authentications_class, Authentication)
+ sorcery_controller_external_property_set(:facebook, :user_info_mapping, { username: 'name' })
+
+ expect { get :test_build_from_provider, provider: 'facebook' }.to change { User.count }.by 1
+ expect(User.first.username).to eq 'Noam Ben Ari'
+ end
+ end
 end