Use ServiceResponse in Boards::CreateService

- refactor the service to use ServiceResponse
- change affected classes and specs

app/controllers/concerns/multiple_boards_actions.rb

@@ -21,11 +21,13 @@ module MultipleBoardsActions
   end
 
   def create
-    board = Boards::CreateService.new(parent, current_user, board_params).execute
+    response = Boards::CreateService.new(parent, current_user, board_params).execute
 
     respond_to do |format|
       format.json do
-        if board.persisted?
+        board = response.payload
+
+        if response.success?
           extra_json = { board_path: board_path(board) }
           render json: serialize_as_json(board).merge(extra_json)
         else

app/services/boards/create_service.rb

@@ -3,7 +3,11 @@
 module Boards
   class CreateService < Boards::BaseService
     def execute
-      create_board! if can_create_board?
+      unless can_create_board?
+        return ServiceResponse.error(message: "You don't have the permission to create a board for this resource.")
+      end
+
+      create_board!
     end
 
     private
@@ -15,12 +19,16 @@ module Boards
     def create_board!
       board = parent.boards.create(params)
 
-      if board.persisted?
-        board.lists.create(list_type: :backlog)
-        board.lists.create(list_type: :closed)
+      unless board.persisted?
+        return ServiceResponse.error(message: "There was an error when creating a board.", payload: board)
+      end
+
+      board.tap do |created_board|
+        created_board.lists.create(list_type: :backlog)
+        created_board.lists.create(list_type: :closed)
       end
 
-      board
+      ServiceResponse.success(payload: board)
     end
   end
 end

ee/lib/ee/api/boards_responses.rb

@@ -10,10 +10,10 @@ module EE
           def create_board
             forbidden! unless board_parent.multiple_issue_boards_available?
 
-            board =
+            response =
               ::Boards::CreateService.new(board_parent, current_user, { name: params[:name] }).execute
 
-            present board, with: ::API::Entities::Board
+            present response.payload, with: ::API::Entities::Board
           end
 
           def update_board

ee/spec/services/boards/create_service_spec.rb

@@ -3,6 +3,10 @@
 require 'spec_helper'
 
 RSpec.describe Boards::CreateService, services: true do
+  def created_board
+    service.execute.payload
+  end
+
   shared_examples 'boards create service' do
     context 'With the feature available' do
       before do
@@ -16,8 +20,12 @@ RSpec.describe Boards::CreateService, services: true do
           expect { service.execute }.to change(parent.boards, :count).by(1)
         end
 
+        it 'returns a successful response' do
+          expect(service.execute).to be_success
+        end
+
         it 'creates the default lists' do
-          board = service.execute
+          board = created_board
 
           expect(board.lists.size).to eq 2
           expect(board.lists.first).to be_backlog
@@ -32,10 +40,12 @@ RSpec.describe Boards::CreateService, services: true do
           expect { service.execute }.not_to change(parent.boards, :count)
         end
 
-        it "does not create board's default lists" do
-          board = service.execute
+        it 'returns an error response' do
+          expect(service.execute).to be_error
+        end
 
-          expect(board.lists.size).to eq 0
+        it "does not create board's default lists" do
+          expect(created_board.lists.size).to eq 0
         end
       end
 
@@ -46,8 +56,12 @@ RSpec.describe Boards::CreateService, services: true do
           expect { service.execute }.to change(parent.boards, :count).by(1)
         end
 
+        it 'returns a successful response' do
+          expect(service.execute).to be_success
+        end
+
         it "creates board's default lists" do
-          board = service.execute
+          board = created_board
 
           expect(board.lists.size).to eq 2
           expect(board.lists.last).to be_closed
@@ -68,13 +82,13 @@ RSpec.describe Boards::CreateService, services: true do
         stub_licensed_features(multiple_group_issue_boards: false)
         service = described_class.new(parent, double)
 
-        expect(service.execute).not_to be_nil
+        expect(service.execute.payload).not_to be_nil
         expect { service.execute }.not_to change(parent.boards, :count)
       end
     end
 
     it_behaves_like 'setting a milestone scope' do
-      subject { described_class.new(parent, double, milestone_id: milestone.id).execute }
+      subject { described_class.new(parent, double, milestone_id: milestone.id).execute.payload }
     end
   end
 end

spec/support/shared_examples/services/boards/boards_create_service_shared_examples.rb

@@ -7,7 +7,7 @@ RSpec.shared_examples 'boards create service' do
     end
 
     it 'creates the default lists' do
-      board = service.execute
+      board = service.execute.payload
 
       expect(board.lists.size).to eq 2
       expect(board.lists.first).to be_backlog