Rename pipeline methods related to legacy stages

app/controllers/projects/pipelines_controller.rb

@@ -99,7 +99,7 @@ class Projects::PipelinesController < Projects::ApplicationController
   end
   def stage
-    @stage = pipeline.stage(params[:stage])
+    @stage = pipeline.legacy_stage(params[:stage])
     return not_found unless @stage
     respond_to do |format|

app/models/ci/pipeline.rb

@@ -151,21 +151,21 @@ module Ci
       where.not(duration: nil).sum(:duration)
     end
-    def stage(name)
-      stage = Ci::Stage.new(self, name: name)
-      stage unless stage.statuses_count.zero?
-    end
-
     def stages_count
       statuses.select(:stage).distinct.count
     end
-    def stages_name
+    def stages_names
       statuses.order(:stage_idx).distinct.
         pluck(:stage, :stage_idx).map(&:first)
     end
-    def stages
+    def legacy_stage(name)
+      stage = Ci::Stage.new(self, name: name)
+      stage unless stage.statuses_count.zero?
+    end
+
+    def legacy_stages
       # TODO, this needs refactoring, see gitlab-ce#26481.
       stages_query = statuses
@@ -300,13 +300,13 @@ module Ci
       seeds_scope = { ref: ref, tag: tag?, trigger: trigger_requests.first }
-      config_processor.stage_seeds(seeds_scope).tap do |seeds|
+      @seeds ||= config_processor.stage_seeds(seeds_scope).tap do |seeds|
         seeds.pipeline = self
       end
     end
     def has_stages?
-      stage_seeds.has_stages?
+      stage_seeds&.has_stages?
     end
     def has_warnings?

app/views/projects/builds/_sidebar.html.haml

@@ -118,7 +118,7 @@
           %span.stage-selection More
           = icon('chevron-down')
         %ul.dropdown-menu
-          - @build.pipeline.stages.each do |stage|
+          - @build.pipeline.legacy_stages.each do |stage|
             %li
               %a.stage-item= stage.name

app/views/projects/commit/_commit_box.html.haml

@@ -72,8 +72,8 @@
       Pipeline
       = link_to "##{last_pipeline.id}", namespace_project_pipeline_path(@project.namespace, @project, last_pipeline.id)
       = ci_label_for_status(last_pipeline.status)
-      - if last_pipeline.stages.any?
-        with #{"stage".pluralize(last_pipeline.stages.count)}
+      - if last_pipeline.stages_count.nonzero?
+        with #{"stage".pluralize(last_pipeline.stages_count)}
         .mr-widget-pipeline-graph
           = render 'shared/mini_pipeline_graph', pipeline: last_pipeline, klass: 'js-commit-pipeline-graph'
       in

app/views/projects/pipelines/_with_tabs.html.haml

@@ -46,7 +46,7 @@
             %th
             %th Coverage
             %th
-        = render partial: "projects/stage/stage", collection: pipeline.stages, as: :stage
+        = render partial: "projects/stage/stage", collection: pipeline.legacy_stages, as: :stage
   - if failed_builds.present?
     #js-tab-failures.build-failures.tab-pane
       - failed_builds.each_with_index do |build, index|

app/views/shared/_mini_pipeline_graph.html.haml

 .stage-cell
-  - pipeline.stages.each do |stage|
+  - pipeline.legacy_stages.each do |stage|
     - if stage.status
       - detailed_status = stage.detailed_status(current_user)
       - icon_status = "#{detailed_status.icon}_borderless"

lib/gitlab/data_builder/pipeline.rb

@@ -22,7 +22,7 @@ module Gitlab
           sha: pipeline.sha,
           before_sha: pipeline.before_sha,
           status: pipeline.status,
-          stages: pipeline.stages_name,
+          stages: pipeline.stages_names,
           created_at: pipeline.created_at,
           finished_at: pipeline.finished_at,
           duration: pipeline.duration

spec/models/ci/pipeline_spec.rb

@@ -213,8 +213,8 @@ describe Ci::Pipeline, models: true do
       end
     end
-    describe '#stages' do
-      subject { pipeline.stages }
+    describe '#legacy_stages' do
+      subject { pipeline.legacy_stages }
       context 'stages list' do
         it 'returns ordered list of stages' do
@@ -263,7 +263,7 @@ describe Ci::Pipeline, models: true do
         end
         it 'populates stage with correct number of warnings' do
-          deploy_stage = pipeline.stages.third
+          deploy_stage = pipeline.legacy_stages.third
           expect(deploy_stage).not_to receive(:statuses)
           expect(deploy_stage).to have_warnings
@@ -277,15 +277,15 @@ describe Ci::Pipeline, models: true do
       end
     end
-    describe '#stages_name' do
+    describe '#stages_names' do
       it 'returns a valid names of stages' do
-        expect(pipeline.stages_name).to eq(%w(build test deploy))
+        expect(pipeline.stages_names).to eq(%w(build test deploy))
       end
     end
   end
-  describe '#stage' do
-    subject { pipeline.stage('test') }
+  describe '#legacy_stage' do
+    subject { pipeline.legacy_stage('test') }
     context 'with status in stage' do
       before do