Add board assignee, weight, labels and milestone when creating a board issue

app/services/boards/issues/create_service.rb

@@ -10,11 +10,18 @@ module Boards
       end
 
       def execute
-        create_issue(params.merge(label_ids: [list.label_id]))
+        create_issue(creation_params)
       end
 
       private
 
+      def creation_params
+        params.merge(label_ids: [list.label_id, *board.label_ids],
+                     weight: board.weight,
+                     milestone_id: board.milestone_id,
+                     assignee_ids: [board.assignee_id])
+      end
+
       def board
         @board ||= parent.boards.find(params.delete(:board_id))
       end

spec/services/boards/issues/create_service_spec.rb

@@ -29,5 +29,23 @@ describe Boards::Issues::CreateService do
 
       expect(issue.labels).to eq [label]
     end
+
+    it 'adds the board assignee, weight, labels and milestone to the issue' do
+      board_assignee = create(:user)
+      project.team << [board_assignee, :developer]
+      board_milestone = create(:milestone, project: project)
+      board_label = create(:label, project: project)
+      board.update!(assignee: board_assignee,
+                    milestone: board_milestone,
+                    label_ids: [board_label.id],
+                    weight: 4)
+
+      issue = service.execute
+
+      expect(issue.assignees).to eq([board_assignee])
+      expect(issue.weight).to eq(board.weight)
+      expect(issue.milestone).to eq(board_milestone)
+      expect(issue.labels).to contain_exactly(label, board_label)
+    end
   end
 end