diff options
| -rw-r--r-- | CHANGELOG | 1 | ||||
| -rw-r--r-- | app/controllers/projects/milestones_controller.rb | 6 | ||||
| -rw-r--r-- | app/models/milestone.rb | 32 | ||||
| -rw-r--r-- | spec/benchmarks/models/milestone_spec.rb | 17 | ||||
| -rw-r--r-- | spec/models/milestone_spec.rb | 28 |
5 files changed, 79 insertions, 5 deletions
diff --git a/CHANGELOG b/CHANGELOG index e9ca5ddee5f..85106effa6c 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -1,6 +1,7 @@ Please view this file on the master branch, on stable branches it's out of date. v 8.1.0 (unreleased) + - Improved performance of sorting milestone issues - Fix error preventing displaying of commit data for a directory with a leading dot (Stan Hu) - Speed up load times of issue detail pages by roughly 1.5x - Make diff file view easier to use on mobile screens (Stan Hu) diff --git a/app/controllers/projects/milestones_controller.rb b/app/controllers/projects/milestones_controller.rb index 86f4a02a6e9..15506bd677a 100644 --- a/app/controllers/projects/milestones_controller.rb +++ b/app/controllers/projects/milestones_controller.rb @@ -75,11 +75,7 @@ class Projects::MilestonesController < Projects::ApplicationController end def sort_issues - @issues = @milestone.issues.where(id: params['sortable_issue']) - @issues.each do |issue| - issue.position = params['sortable_issue'].index(issue.id.to_s) + 1 - issue.save - end + @milestone.sort_issues(params['sortable_issue'].map(&:to_i)) render json: { saved: true } end diff --git a/app/models/milestone.rb b/app/models/milestone.rb index 84acba30b6b..2ff16e2825c 100644 --- a/app/models/milestone.rb +++ b/app/models/milestone.rb @@ -105,4 +105,36 @@ class Milestone < ActiveRecord::Base def author_id nil end + + # Sorts the issues for the given IDs. + # + # This method runs a single SQL query using a CASE statement to update the + # position of all issues in the current milestone (scoped to the list of IDs). + # + # Given the ids [10, 20, 30] this method produces a SQL query something like + # the following: + # + # UPDATE issues + # SET position = CASE + # WHEN id = 10 THEN 1 + # WHEN id = 20 THEN 2 + # WHEN id = 30 THEN 3 + # ELSE position + # END + # WHERE id IN (10, 20, 30); + # + # This method expects that the IDs given in `ids` are already Fixnums. + def sort_issues(ids) + pairs = [] + + ids.each_with_index do |id, index| + pairs << id + pairs << index + 1 + end + + conditions = 'WHEN id = ? THEN ? ' * ids.length + + issues.where(id: ids). + update_all(["position = CASE #{conditions} ELSE position END", *pairs]) + end end diff --git a/spec/benchmarks/models/milestone_spec.rb b/spec/benchmarks/models/milestone_spec.rb new file mode 100644 index 00000000000..a94afc4c40d --- /dev/null +++ b/spec/benchmarks/models/milestone_spec.rb @@ -0,0 +1,17 @@ +require 'spec_helper' + +describe Milestone, benchmark: true do + describe '#sort_issues' do + let(:milestone) { create(:milestone) } + + let(:issue1) { create(:issue, milestone: milestone) } + let(:issue2) { create(:issue, milestone: milestone) } + let(:issue3) { create(:issue, milestone: milestone) } + + let(:issue_ids) { [issue3.id, issue2.id, issue1.id] } + + benchmark_subject { milestone.sort_issues(issue_ids) } + + it { is_expected.to iterate_per_second(500) } + end +end diff --git a/spec/models/milestone_spec.rb b/spec/models/milestone_spec.rb index c88d5349663..77c58627322 100644 --- a/spec/models/milestone_spec.rb +++ b/spec/models/milestone_spec.rb @@ -140,4 +140,32 @@ describe Milestone do end end + describe '#sort_issues' do + let(:milestone) { create(:milestone) } + + let(:issue1) { create(:issue, milestone: milestone, position: 1) } + let(:issue2) { create(:issue, milestone: milestone, position: 2) } + let(:issue3) { create(:issue, milestone: milestone, position: 3) } + let(:issue4) { create(:issue, position: 42) } + + it 'sorts the given issues' do + milestone.sort_issues([issue3.id, issue2.id, issue1.id]) + + issue1.reload + issue2.reload + issue3.reload + + expect(issue1.position).to eq(3) + expect(issue2.position).to eq(2) + expect(issue3.position).to eq(1) + end + + it 'ignores issues not part of the milestone' do + milestone.sort_issues([issue3.id, issue2.id, issue1.id, issue4.id]) + + issue4.reload + + expect(issue4.position).to eq(42) + end + end end |