Use `resource` in Project Variables routing scheme

app/controllers/projects/variables_controller.rb

 class Projects::VariablesController < Projects::ApplicationController
   before_action :authorize_admin_build!
 
-  def save_multiple
+  def show
+    respond_to do |format|
+      format.json do
+        variables = @project.variables
+          .map { |variable| variable.present(current_user: current_user) }
+
+        render status: :ok, json: { variables: variables }
+      end
+    end
+  end
+
+  def update
     respond_to do |format|
       format.json do
         return head :ok if @project.update(variables_params)

app/presenters/ci/variable_presenter.rb

@@ -11,11 +11,11 @@ module Ci
     end
 
     def edit_path
-      project_variables_save_multiple_path(project)
+      project_variables_path(project)
     end
 
     def delete_path
-      project_variables_save_multiple_path(project)
+      project_variables_path(project)
     end
   end
 end

config/routes/project.rb

@@ -156,9 +156,7 @@ constraints(ProjectUrlConstrainer.new) do
         end
       end
 
-      namespace :variables do
-        post :save_multiple
-      end
+      resource :variables, only: [:show, :update]
 
       resources :triggers, only: [:index, :create, :edit, :update, :destroy] do
         member do

spec/controllers/projects/variables_controller_spec.rb

@@ -9,7 +9,26 @@ describe Projects::VariablesController do
     project.add_master(user)
   end
 
-  describe 'POST #save_multiple' do
+  describe 'GET #show' do
+    let(:variable) { create(:ci_variable) }
+
+    before do
+      project.variables << variable
+    end
+
+    subject do
+      get :show, namespace_id: project.namespace.to_param, project_id: project,
+                 format: :json
+    end
+
+    it 'renders the ci_variable as json' do
+      subject
+
+      expect(response.body).to include(variable.to_json)
+    end
+  end
+
+  describe 'POST #update' do
     let(:variable) { create(:ci_variable) }
 
     before do
@@ -18,7 +37,7 @@ describe Projects::VariablesController do
 
     context 'with invalid new variable parameters' do
       subject do
-        post :save_multiple,
+        post :update,
           namespace_id: project.namespace.to_param, project_id: project,
           variables_attributes: [{ id: variable.id, key: variable.key,
                                    value: 'other_value',
@@ -45,7 +64,7 @@ describe Projects::VariablesController do
 
     context 'with valid new variable parameters' do
       subject do
-        post :save_multiple,
+        post :update,
           namespace_id: project.namespace.to_param, project_id: project,
           variables_attributes: [{ id: variable.id, key: variable.key,
                                    value: 'other_value',
@@ -72,7 +91,7 @@ describe Projects::VariablesController do
 
     context 'with a deleted variable' do
       subject do
-        post :save_multiple,
+        post :update,
           namespace_id: project.namespace.to_param, project_id: project,
           variables_attributes: [{ id: variable.id, key: variable.key,
                                    value: variable.value,

spec/presenters/ci/variable_presenter_spec.rb

@@ -43,12 +43,12 @@ describe Ci::VariablePresenter do
   describe '#edit_path' do
     subject { described_class.new(variable).edit_path }
 
-    it { is_expected.to eq(project_variables_save_multiple_path(project)) }
+    it { is_expected.to eq(project_variables_path(project)) }
   end
 
   describe '#delete_path' do
     subject { described_class.new(variable).delete_path }
 
-    it { is_expected.to eq(project_variables_save_multiple_path(project)) }
+    it { is_expected.to eq(project_variables_path(project)) }
   end
 end