Avoid plucking Todo ids and use sub-queries instead
TodoService should not call `.select(&:id)` on todos, because this is bad performance. So instead use sub-queries, which will result in a single SQL query to the database. https://docs.gitlab.com/ee/development/sql.html#plucking-ids
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@ -13,7 +13,7 @@ class Dashboard::TodosController < Dashboard::ApplicationController
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end
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def destroy
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TodoService.new.mark_todos_as_done_by_ids([params[:id]], current_user)
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TodoService.new.mark_todos_as_done_by_ids(params[:id], current_user)
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respond_to do |format|
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format.html do
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@ -37,7 +37,7 @@ class Dashboard::TodosController < Dashboard::ApplicationController
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end
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def restore
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TodoService.new.mark_todos_as_pending_by_ids([params[:id]], current_user)
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TodoService.new.mark_todos_as_pending_by_ids(params[:id], current_user)
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render json: todos_counts
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end
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@ -288,7 +288,7 @@ class IssuableBaseService < BaseService
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todo_service.mark_todo(issuable, current_user)
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when 'done'
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todo = TodosFinder.new(current_user).execute.find_by(target: issuable)
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todo_service.mark_todos_as_done([todo], current_user) if todo
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todo_service.mark_todos_as_done_by_ids(todo, current_user) if todo
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end
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end
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@ -170,20 +170,22 @@ class TodoService
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# When user marks some todos as done
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def mark_todos_as_done(todos, current_user)
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update_todos_state_by_ids(todos.select(&:id), current_user, :done)
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update_todos_state(todos, current_user, :done)
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end
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def mark_todos_as_done_by_ids(ids, current_user)
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update_todos_state_by_ids(ids, current_user, :done)
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todos = todos_by_ids(ids, current_user)
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mark_todos_as_done(todos, current_user)
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end
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# When user marks some todos as pending
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def mark_todos_as_pending(todos, current_user)
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update_todos_state_by_ids(todos.select(&:id), current_user, :pending)
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update_todos_state(todos, current_user, :pending)
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end
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def mark_todos_as_pending_by_ids(ids, current_user)
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update_todos_state_by_ids(ids, current_user, :pending)
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todos = todos_by_ids(ids, current_user)
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mark_todos_as_pending(todos, current_user)
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end
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# When user marks an issue as todo
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@ -198,9 +200,11 @@ class TodoService
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private
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def update_todos_state_by_ids(ids, current_user, state)
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todos = current_user.todos.where(id: ids)
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def todos_by_ids(ids, current_user)
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current_user.todos.where(id: Array(ids))
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end
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def update_todos_state(todos, current_user, state)
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# Only update those that are not really on that state
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todos = todos.where.not(state: state)
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todos_ids = todos.pluck(:id)
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@ -0,0 +1,4 @@
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---
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title: Avoid plucking Todo ids in TodoService
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merge_request: 10845
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author:
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@ -59,10 +59,10 @@ module API
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requires :id, type: Integer, desc: 'The ID of the todo being marked as done'
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end
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post ':id/mark_as_done' do
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todo = current_user.todos.find(params[:id])
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TodoService.new.mark_todos_as_done([todo], current_user)
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TodoService.new.mark_todos_as_done_by_ids(params[:id], current_user)
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todo = Todo.find(params[:id])
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present todo.reload, with: Entities::Todo, current_user: current_user
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present todo, with: Entities::Todo, current_user: current_user
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end
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desc 'Mark all todos as done'
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@ -11,10 +11,10 @@ module API
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requires :id, type: Integer, desc: 'The ID of the todo being marked as done'
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end
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delete ':id' do
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todo = current_user.todos.find(params[:id])
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TodoService.new.mark_todos_as_done([todo], current_user)
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TodoService.new.mark_todos_as_done_by_ids(params[:id], current_user)
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todo = Todo.find(params[:id])
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present todo.reload, with: ::API::Entities::Todo, current_user: current_user
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present todo, with: ::API::Entities::Todo, current_user: current_user
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end
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desc 'Mark all todos as done'
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@ -336,7 +336,7 @@ describe TodoService do
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describe '#mark_todos_as_done' do
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it_behaves_like 'updating todos state', :mark_todos_as_done, :pending, :done do
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let(:collection) { [first_todo, second_todo] }
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let(:collection) { Todo.all }
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end
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end
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@ -348,7 +348,7 @@ describe TodoService do
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describe '#mark_todos_as_pending' do
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it_behaves_like 'updating todos state', :mark_todos_as_pending, :done, :pending do
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let(:collection) { [first_todo, second_todo] }
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let(:collection) { Todo.all }
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end
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end
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@ -880,14 +880,16 @@ describe TodoService do
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it 'marks an array of todos as done' do
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todo = create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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expect { described_class.new.mark_todos_as_done([todo], john_doe) }
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todos = TodosFinder.new(john_doe, {}).execute
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expect { described_class.new.mark_todos_as_done(todos, john_doe) }
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.to change { todo.reload.state }.from('pending').to('done')
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end
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it 'returns the ids of updated todos' do # Needed on API
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todo = create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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expect(described_class.new.mark_todos_as_done([todo], john_doe)).to eq([todo.id])
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todos = TodosFinder.new(john_doe, {}).execute
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expect(described_class.new.mark_todos_as_done(todos, john_doe)).to eq([todo.id])
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end
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context 'when some of the todos are done already' do
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@ -907,11 +909,32 @@ describe TodoService do
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expect(described_class.new.mark_todos_as_done(Todo.all, john_doe)).to eq([])
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end
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end
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end
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describe '#mark_todos_as_done_by_ids' do
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let(:issue) { create(:issue, project: project, author: author, assignees: [john_doe]) }
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let(:another_issue) { create(:issue, project: project, author: author, assignees: [john_doe]) }
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it 'marks an array of todo ids as done' do
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todo = create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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another_todo = create(:todo, :mentioned, user: john_doe, target: another_issue, project: project)
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expect { described_class.new.mark_todos_as_done_by_ids([todo.id, another_todo.id], john_doe) }
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.to change { john_doe.todos.done.count }.from(0).to(2)
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end
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it 'marks a single todo id as done' do
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todo = create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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expect { described_class.new.mark_todos_as_done_by_ids(todo.id, john_doe) }
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.to change { todo.reload.state }.from('pending').to('done')
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end
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it 'caches the number of todos of a user', :use_clean_rails_memory_store_caching do
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create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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todo = create(:todo, :mentioned, user: john_doe, target: issue, project: project)
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described_class.new.mark_todos_as_done([todo], john_doe)
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described_class.new.mark_todos_as_done_by_ids(todo, john_doe)
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expect_any_instance_of(TodosFinder).not_to receive(:execute)
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