Refactoring service to create a new issue in a board list

app/controllers/projects/boards/issues_controller.rb

@@ -16,9 +16,8 @@ module Projects
       end
 
       def create
-        list = project.board.lists.find(params[:list_id])
         service = ::Boards::Issues::CreateService.new(project, current_user, issue_params)
-        issue = service.execute(list)
+        issue = service.execute
 
         if issue.valid?
           render json: serialize_as_json(issue)
@@ -68,7 +67,7 @@ module Projects
       end
 
       def issue_params
-        params.require(:issue).permit(:title).merge(request: request)
+        params.require(:issue).permit(:title).merge(board_id: params[:board_id], list_id: params[:list_id], request: request)
       end
 
       def serialize_as_json(resource)

app/services/boards/issues/create_service.rb

 module Boards
   module Issues
     class CreateService < Boards::BaseService
-      def execute(list)
-        params.merge!(label_ids: [list.label_id])
-        create_issue
+      def execute
+        create_issue(params.merge(label_ids: [list.label_id]))
       end
 
       private
 
-      def create_issue
+      def board
+        @board ||= project.boards.find(params.delete(:board_id))
+      end
+
+      def list
+        @list ||= board.lists.find(params.delete(:list_id))
+      end
+
+      def create_issue(params)
         ::Issues::CreateService.new(project, current_user, params).execute
       end
     end

spec/controllers/projects/boards/issues_controller_spec.rb

@@ -76,13 +76,13 @@ describe Projects::Boards::IssuesController do
   describe 'POST create' do
     context 'with valid params' do
       it 'returns a successful 200 response' do
-        create_issue user: user, list: list1, title: 'New issue'
+        create_issue user: user, board: board, list: list1, title: 'New issue'
 
         expect(response).to have_http_status(200)
       end
 
       it 'returns the created issue' do
-        create_issue user: user, list: list1, title: 'New issue'
+        create_issue user: user, board: board, list: list1, title: 'New issue'
 
         expect(response).to match_response_schema('issue')
       end
@@ -91,7 +91,7 @@ describe Projects::Boards::IssuesController do
     context 'with invalid params' do
       context 'when title is nil' do
         it 'returns an unprocessable entity 422 response' do
-          create_issue user: user, list: list1, title: nil
+          create_issue user: user, board: board, list: list1, title: nil
 
           expect(response).to have_http_status(422)
         end
@@ -101,7 +101,7 @@ describe Projects::Boards::IssuesController do
         it 'returns a not found 404 response' do
           list = create(:list)
 
-          create_issue user: user, list: list, title: 'New issue'
+          create_issue user: user, board: board, list: list, title: 'New issue'
 
           expect(response).to have_http_status(404)
         end
@@ -110,17 +110,18 @@ describe Projects::Boards::IssuesController do
 
     context 'with unauthorized user' do
       it 'returns a forbidden 403 response' do
-        create_issue user: guest, list: list1, title: 'New issue'
+        create_issue user: guest, board: board, list: list1, title: 'New issue'
 
         expect(response).to have_http_status(403)
       end
     end
 
-    def create_issue(user:, list:, title:)
+    def create_issue(user:, board:, list:, title:)
       sign_in(user)
 
       post :create, namespace_id: project.namespace.to_param,
                     project_id: project.to_param,
+                    board_id: board.to_param,
                     list_id: list.to_param,
                     issue: { title: title },
                     format: :json

spec/services/boards/issues/create_service_spec.rb

@@ -2,13 +2,13 @@ require 'spec_helper'
 
 describe Boards::Issues::CreateService, services: true do
   describe '#execute' do
-    let(:project) { create(:project_with_board) }
-    let(:board)   { project.board }
+    let(:project) { create(:empty_project) }
+    let(:board)   { create(:board, project: project) }
     let(:user)    { create(:user) }
     let(:label)   { create(:label, project: project, name: 'in-progress') }
     let!(:list)   { create(:list, board: board, label: label, position: 0) }
 
-    subject(:service) { described_class.new(project, user, title: 'New issue') }
+    subject(:service) { described_class.new(project, user, board_id: board.id, list_id: list.id, title: 'New issue') }
 
     before do
       project.team << [user, :developer]
@@ -17,15 +17,15 @@ describe Boards::Issues::CreateService, services: true do
     it 'delegates the create proceedings to Issues::CreateService' do
       expect_any_instance_of(Issues::CreateService).to receive(:execute).once
 
-      service.execute(list)
+      service.execute
     end
 
     it 'creates a new issue' do
-      expect { service.execute(list) }.to change(project.issues, :count).by(1)
+      expect { service.execute }.to change(project.issues, :count).by(1)
     end
 
     it 'adds the label of the list to the issue' do
-      issue = service.execute(list)
+      issue = service.execute
 
       expect(issue.labels).to eq [label]
     end