Add project level config for merge pipelines

Add schema

Add CE counter part

Add default value for

Add changelog

Fix schema

Add test

Fix schema

Fix schema version

Remove default value for

app/views/projects/_merge_request_merge_settings.html.haml

@@ -9,6 +9,7 @@
       %span.descr
         Pipelines need to be configured to enable this feature.
         = link_to icon('question-circle'), help_page_path('user/project/merge_requests/merge_when_pipeline_succeeds', anchor: 'only-allow-merge-requests-to-be-merged-if-the-pipeline-succeeds'), target: '_blank'
+  = render_if_exists 'projects/merge_pipelines_settings', form: form
   .form-check
     = form.check_box :only_allow_merge_if_all_discussions_are_resolved, class: 'form-check-input'
     = form.label :only_allow_merge_if_all_discussions_are_resolved, class: 'form-check-label' do

changelogs/unreleased/add-project-level-config-for-prospective-merge-pipelines-ce.yml

+---
+title: Add project level config for merge pipelines
+merge_request: 25385
+author:
+type: added

db/migrate/20190215154930_add_merge_pipelines_enabled_to_ci_cd_settings.rb

+# frozen_string_literal: true
+
+class AddMergePipelinesEnabledToCiCdSettings < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    add_column :project_ci_cd_settings, :merge_pipelines_enabled, :boolean
+  end
+end

db/schema.rb

@@ -1575,6 +1575,7 @@ ActiveRecord::Schema.define(version: 20190220150130) do
   create_table "project_ci_cd_settings", force: :cascade do |t|
     t.integer "project_id", null: false
     t.boolean "group_runners_enabled", default: true, null: false
+    t.boolean "merge_pipelines_enabled"
     t.index ["project_id"], name: "index_project_ci_cd_settings_on_project_id", unique: true, using: :btree
   end