fix conflictdocs-refactor-dev-guides

21 files changed, 220 insertions, 146 deletions

diff --git a/app/controllers/projects/application_controller.rb b/app/controllers/projects/application_controller.rb
index 6025a40348b..6d9b42a2c04 100644
--- a/app/controllers/projects/application_controller.rb
+++ b/app/controllers/projects/application_controller.rb
@@ -6,7 +6,7 @@ class Projects::ApplicationController < ApplicationController
   before_action :repository
   layout 'project'
 
-  helper_method :repository, :can_collaborate_with_project?
+  helper_method :repository, :can_collaborate_with_project?, :user_access
 
   private
 
@@ -31,11 +31,12 @@ class Projects::ApplicationController < ApplicationController
     @repository ||= project.repository
   end
 
-  def can_collaborate_with_project?(project = nil)
+  def can_collaborate_with_project?(project = nil, ref: nil)
     project ||= @project
 
     can?(current_user, :push_code, project) ||
-      (current_user && current_user.already_forked?(project))
+      (current_user && current_user.already_forked?(project)) ||
+      user_access(project).can_push_to_branch?(ref)
   end
 
   def authorize_action!(action)
@@ -90,4 +91,9 @@ class Projects::ApplicationController < ApplicationController
   def check_issues_available!
     return render_404 unless @project.feature_available?(:issues, current_user)
   end
+
+  def user_access(project)
+    @user_access ||= {}
+    @user_access[project] ||= Gitlab::UserAccess.new(current_user, project: project)
+  end
 end
diff --git a/app/controllers/projects/blob_controller.rb b/app/controllers/projects/blob_controller.rb
index 74c25505e36..0c1c286a0a4 100644
--- a/app/controllers/projects/blob_controller.rb
+++ b/app/controllers/projects/blob_controller.rb
@@ -9,8 +9,12 @@ class Projects::BlobController < Projects::ApplicationController
 
   before_action :require_non_empty_project, except: [:new, :create]
   before_action :authorize_download_code!
-  before_action :authorize_edit_tree!, only: [:new, :create, :update, :destroy]
+
+  # We need to assign the blob vars before `authorize_edit_tree!` so we can
+  # validate access to a specific ref.
   before_action :assign_blob_vars
+  before_action :authorize_edit_tree!, only: [:new, :create, :update, :destroy]
+
   before_action :commit, except: [:new, :create]
   before_action :blob, except: [:new, :create]
   before_action :require_branch_head, only: [:edit, :update]
@@ -38,7 +42,7 @@ class Projects::BlobController < Projects::ApplicationController
       end
 
       format.json do
-        page_title @blob.path, @ref, @project.name_with_namespace
+        page_title @blob.path, @ref, @project.full_name
 
         show_json
       end
@@ -46,7 +50,7 @@ class Projects::BlobController < Projects::ApplicationController
   end
 
   def edit
-    if can_collaborate_with_project?
+    if can_collaborate_with_project?(project, ref: @ref)
       blob.load_all_data!
     else
       redirect_to action: 'show'
diff --git a/app/controllers/projects/branches_controller.rb b/app/controllers/projects/branches_controller.rb
index cabafe26357..965cece600e 100644
--- a/app/controllers/projects/branches_controller.rb
+++ b/app/controllers/projects/branches_controller.rb
@@ -7,13 +7,19 @@ class Projects::BranchesController < Projects::ApplicationController
   before_action :authorize_download_code!
   before_action :authorize_push_code!, only: [:new, :create, :destroy, :destroy_all_merged]
 
-  def index
-    @sort = params[:sort].presence || sort_value_recently_updated
-    @branches = BranchesFinder.new(@repository, params.merge(sort: @sort)).execute
-    @branches = Kaminari.paginate_array(@branches).page(params[:page])
+  # Support legacy URLs
+  before_action :redirect_for_legacy_index_sort_or_search, only: [:index]
 
+  def index
     respond_to do |format|
       format.html do
+        @sort = params[:sort].presence || sort_value_recently_updated
+        @mode = params[:state].presence || 'overview'
+        @overview_max_branches = 5
+
+        # Fetch branches for the specified mode
+        fetch_branches_by_mode
+
         @refs_pipelines = @project.pipelines.latest_successful_for_refs(@branches.map(&:name))
         @merged_branch_names =
           repository.merged_branch_names(@branches.map(&:name))
@@ -28,7 +34,9 @@ class Projects::BranchesController < Projects::ApplicationController
         end
       end
       format.json do
-        render json: @branches.map(&:name)
+        branches = BranchesFinder.new(@repository, params).execute
+        branches = Kaminari.paginate_array(branches).page(params[:page])
+        render json: branches.map(&:name)
       end
     end
   end
@@ -123,4 +131,27 @@ class Projects::BranchesController < Projects::ApplicationController
       context: 'autodeploy'
     )
   end
+
+  def redirect_for_legacy_index_sort_or_search
+    # Normalize a legacy URL with redirect
+    if request.format != :json && !params[:state].presence && [:sort, :search, :page].any? { |key| params[key].presence }
+      redirect_to project_branches_filtered_path(@project, state: 'all'), notice: 'Update your bookmarked URLs as filtered/sorted branches URL has been changed.'
+    end
+  end
+
+  def fetch_branches_by_mode
+    if @mode == 'overview'
+      # overview mode
+      @active_branches, @stale_branches = BranchesFinder.new(@repository, sort: sort_value_recently_updated).execute.partition(&:active?)
+      # Here we get one more branch to indicate if there are more data we're not showing
+      @active_branches = @active_branches.first(@overview_max_branches + 1)
+      @stale_branches = @stale_branches.first(@overview_max_branches + 1)
+      @branches = @active_branches + @stale_branches
+    else
+      # active/stale/all view mode
+      @branches = BranchesFinder.new(@repository, params.merge(sort: @sort)).execute
+      @branches = @branches.select { |b| b.state.to_s == @mode } if %w[active stale].include?(@mode)
+      @branches = Kaminari.paginate_array(@branches).page(params[:page])
+    end
+  end
 end
diff --git a/app/controllers/projects/clusters_controller.rb b/app/controllers/projects/clusters_controller.rb
index 142e8b6e4bc..aeaba3a0acf 100644
--- a/app/controllers/projects/clusters_controller.rb
+++ b/app/controllers/projects/clusters_controller.rb
@@ -4,6 +4,7 @@ class Projects::ClustersController < Projects::ApplicationController
   before_action :authorize_create_cluster!, only: [:new]
   before_action :authorize_update_cluster!, only: [:update]
   before_action :authorize_admin_cluster!, only: [:destroy]
+  before_action :update_applications_status, only: [:status]
 
   STATUS_POLLING_INTERVAL = 10_000
 
@@ -114,4 +115,8 @@ class Projects::ClustersController < Projects::ApplicationController
   def authorize_admin_cluster!
     access_denied! unless can?(current_user, :admin_cluster, cluster)
   end
+
+  def update_applications_status
+    @cluster.applications.each(&:schedule_status_update)
+  end
 end
diff --git a/app/controllers/projects/commits_controller.rb b/app/controllers/projects/commits_controller.rb
index 1d910e461b1..7b7cb52d7ed 100644
--- a/app/controllers/projects/commits_controller.rb
+++ b/app/controllers/projects/commits_controller.rb
@@ -14,37 +14,31 @@ class Projects::CommitsController < Projects::ApplicationController
     @merge_request = MergeRequestsFinder.new(current_user, project_id: @project.id).execute.opened
       .find_by(source_project: @project, source_branch: @ref, target_branch: @repository.root_ref)
 
-    # https://gitlab.com/gitlab-org/gitaly/issues/931
-    Gitlab::GitalyClient.allow_n_plus_1_calls do
-      respond_to do |format|
-        format.html
-        format.atom { render layout: 'xml.atom' }
+    respond_to do |format|
+      format.html
+      format.atom { render layout: 'xml.atom' }
 
-        format.json do
-          pager_json(
-            'projects/commits/_commits',
-            @commits.size,
-            project: @project,
-            ref: @ref)
-        end
+      format.json do
+        pager_json(
+          'projects/commits/_commits',
+          @commits.size,
+          project: @project,
+          ref: @ref)
       end
     end
   end
 
   def signatures
-    # https://gitlab.com/gitlab-org/gitaly/issues/931
-    Gitlab::GitalyClient.allow_n_plus_1_calls do
-      respond_to do |format|
-        format.json do
-          render json: {
-            signatures: @commits.select(&:has_signature?).map do |commit|
-              {
-                commit_sha: commit.sha,
-                html: view_to_html_string('projects/commit/_signature', signature: commit.signature)
-              }
-            end
-          }
-        end
+    respond_to do |format|
+      format.json do
+        render json: {
+          signatures: @commits.select(&:has_signature?).map do |commit|
+            {
+              commit_sha: commit.sha,
+              html: view_to_html_string('projects/commit/_signature', signature: commit.signature)
+            }
+          end
+        }
       end
     end
   end
diff --git a/app/controllers/projects/compare_controller.rb b/app/controllers/projects/compare_controller.rb
index 3cb4eb23981..2b0c2ca97c0 100644
--- a/app/controllers/projects/compare_controller.rb
+++ b/app/controllers/projects/compare_controller.rb
@@ -17,10 +17,8 @@ class Projects::CompareController < Projects::ApplicationController
 
   def show
     apply_diff_view_cookie!
-    # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37430
-    Gitlab::GitalyClient.allow_n_plus_1_calls do
-      render
-    end
+
+    render
   end
 
   def diff_for_path
diff --git a/app/controllers/projects/deployments_controller.rb b/app/controllers/projects/deployments_controller.rb
index 1a418d0f15a..b68cdc39cb8 100644
--- a/app/controllers/projects/deployments_controller.rb
+++ b/app/controllers/projects/deployments_controller.rb
@@ -24,7 +24,7 @@ class Projects::DeploymentsController < Projects::ApplicationController
   end
 
   def additional_metrics
-    return render_404 unless deployment.has_additional_metrics?
+    return render_404 unless deployment.has_metrics?
 
     respond_to do |format|
       format.json do
diff --git a/app/controllers/projects/discussions_controller.rb b/app/controllers/projects/discussions_controller.rb
index 2e6ab7903b8..ee507009e50 100644
--- a/app/controllers/projects/discussions_controller.rb
+++ b/app/controllers/projects/discussions_controller.rb
@@ -1,4 +1,7 @@
 class Projects::DiscussionsController < Projects::ApplicationController
+  include NotesHelper
+  include RendersNotes
+
   before_action :check_merge_requests_available!
   before_action :merge_request
   before_action :discussion
@@ -7,22 +10,45 @@ class Projects::DiscussionsController < Projects::ApplicationController
   def resolve
     Discussions::ResolveService.new(project, current_user, merge_request: merge_request).execute(discussion)
 
-    render json: {
-      resolved_by: discussion.resolved_by.try(:name),
-      discussion_headline_html: view_to_html_string('discussions/_headline', discussion: discussion)
-    }
+    render_discussion
   end
 
   def unresolve
     discussion.unresolve!
 
+    render_discussion
+  end
+
+  private
+
+  def render_discussion
+    if serialize_notes?
+      # TODO - It is not needed to serialize notes when resolving
+      # or unresolving discussions. We should remove this behavior
+      # passing a parameter to DiscussionEntity to return an empty array
+      # for notes.
+      # Check issue: https://gitlab.com/gitlab-org/gitlab-ce/issues/42853
+      prepare_notes_for_rendering(discussion.notes, merge_request)
+      render_json_with_discussions_serializer
+    else
+      render_json_with_html
+    end
+  end
+
+  def render_json_with_discussions_serializer
+    render json:
+      DiscussionSerializer.new(project: project, noteable: discussion.noteable, current_user: current_user)
+      .represent(discussion, context: self)
+  end
+
+  # Legacy method used to render discussions notes when not using Vue on views.
+  def render_json_with_html
     render json: {
+      resolved_by: discussion.resolved_by.try(:name),
       discussion_headline_html: view_to_html_string('discussions/_headline', discussion: discussion)
     }
   end
 
-  private
-
   def merge_request
     @merge_request ||= MergeRequestsFinder.new(current_user, project_id: @project.id).find_by!(iid: params[:merge_request_id])
   end
diff --git a/app/controllers/projects/issues_controller.rb b/app/controllers/projects/issues_controller.rb
index 73806454525..b14939c4216 100644
--- a/app/controllers/projects/issues_controller.rb
+++ b/app/controllers/projects/issues_controller.rb
@@ -60,20 +60,6 @@ class Projects::IssuesController < Projects::ApplicationController
     respond_with(@issue)
   end
 
-  def discussions
-    notes = @issue.notes
-      .inc_relations_for_view
-      .includes(:noteable)
-      .fresh
-
-    notes = prepare_notes_for_rendering(notes)
-    notes = notes.reject { |n| n.cross_reference_not_visible_for?(current_user) }
-
-    discussions = Discussion.build_collection(notes, @issue)
-
-    render json: DiscussionSerializer.new(project: @project, noteable: @issue, current_user: current_user).represent(discussions)
-  end
-
   def create
     create_params = issue_params.merge(spammable_params).merge(
       merge_request_to_resolve_discussions_of: params[:merge_request_to_resolve_discussions_of],
diff --git a/app/controllers/projects/labels_controller.rb b/app/controllers/projects/labels_controller.rb
index e0f4710175f..99790b8e7e8 100644
--- a/app/controllers/projects/labels_controller.rb
+++ b/app/controllers/projects/labels_controller.rb
@@ -112,12 +112,14 @@ class Projects::LabelsController < Projects::ApplicationController
     begin
       return render_404 unless promote_service.execute(@label)
 
+      flash[:notice] = "#{@label.title} promoted to group label."
       respond_to do |format|
         format.html do
-          redirect_to(project_labels_path(@project),
-                      notice: 'Label was promoted to a Group Label')
+          redirect_to(project_labels_path(@project), status: 303)
+        end
+        format.json do
+          render json: { url: project_labels_path(@project) }
         end
-        format.js
       end
     rescue ActiveRecord::RecordInvalid => e
       Gitlab::AppLogger.error "Failed to promote label \"#{@label.title}\" to group label"
diff --git a/app/controllers/projects/merge_requests/application_controller.rb b/app/controllers/projects/merge_requests/application_controller.rb
index 793ae03fb88..67d4ea2ca8f 100644
--- a/app/controllers/projects/merge_requests/application_controller.rb
+++ b/app/controllers/projects/merge_requests/application_controller.rb
@@ -15,6 +15,7 @@ class Projects::MergeRequests::ApplicationController < Projects::ApplicationCont
 
   def merge_request_params_attributes
     [
+      :allow_maintainer_to_push,
       :assignee_id,
       :description,
       :force_remove_source_branch,
diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index a1af125547c..54e7d81de6a 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -187,7 +187,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
       begin
         @merge_request.environments_for(current_user).map do |environment|
           project = environment.project
-          deployment = environment.first_deployment_for(@merge_request.diff_head_commit)
+          deployment = environment.first_deployment_for(@merge_request.diff_head_sha)
 
           stop_url =
             if environment.stop_action? && can?(current_user, :create_deployment, environment)
diff --git a/app/controllers/projects/milestones_controller.rb b/app/controllers/projects/milestones_controller.rb
index 75b17d05e22..ff93147d00f 100644
--- a/app/controllers/projects/milestones_controller.rb
+++ b/app/controllers/projects/milestones_controller.rb
@@ -70,9 +70,17 @@ class Projects::MilestonesController < Projects::ApplicationController
   end
 
   def promote
-    promoted_milestone = Milestones::PromoteService.new(project, current_user).execute(milestone)
-    flash[:notice] = "Milestone has been promoted to group milestone."
-    redirect_to group_milestone_path(project.group, promoted_milestone.iid)
+    Milestones::PromoteService.new(project, current_user).execute(milestone)
+
+    flash[:notice] = "#{milestone.title} promoted to group milestone"
+    respond_to do |format|
+      format.html do
+        redirect_to project_milestones_path(project)
+      end
+      format.json do
+        render json: { url: project_milestones_path(project) }
+      end
+    end
   rescue Milestones::PromoteService::PromoteMilestoneError => error
     redirect_to milestone, alert: error.message
   end
diff --git a/app/controllers/projects/network_controller.rb b/app/controllers/projects/network_controller.rb
index 3b10a93e97f..35fec229db7 100644
--- a/app/controllers/projects/network_controller.rb
+++ b/app/controllers/projects/network_controller.rb
@@ -9,25 +9,22 @@ class Projects::NetworkController < Projects::ApplicationController
   before_action :assign_commit
 
   def show
-    # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/37602
-    Gitlab::GitalyClient.allow_n_plus_1_calls do
-      @url = project_network_path(@project, @ref, @options.merge(format: :json))
-      @commit_url = project_commit_path(@project, 'ae45ca32').gsub("ae45ca32", "%s")
-
-      respond_to do |format|
-        format.html do
-          if @options[:extended_sha1] && !@commit
-            flash.now[:alert] = "Git revision '#{@options[:extended_sha1]}' does not exist."
-          end
-        end
+    @url = project_network_path(@project, @ref, @options.merge(format: :json))
+    @commit_url = project_commit_path(@project, 'ae45ca32').gsub("ae45ca32", "%s")
 
-        format.json do
-          @graph = Network::Graph.new(project, @ref, @commit, @options[:filter_ref])
+    respond_to do |format|
+      format.html do
+        if @options[:extended_sha1] && !@commit
+          flash.now[:alert] = "Git revision '#{@options[:extended_sha1]}' does not exist."
         end
       end
 
-      render
+      format.json do
+        @graph = Network::Graph.new(project, @ref, @commit, @options[:filter_ref])
+      end
     end
+
+    render
   end
 
   def assign_commit
diff --git a/app/controllers/projects/notes_controller.rb b/app/controllers/projects/notes_controller.rb
index 4f8978c93c3..dd41b9648e8 100644
--- a/app/controllers/projects/notes_controller.rb
+++ b/app/controllers/projects/notes_controller.rb
@@ -1,5 +1,6 @@
 class Projects::NotesController < Projects::ApplicationController
   include NotesActions
+  include NotesHelper
   include ToggleAwardEmoji
 
   before_action :whitelist_query_limiting, only: [:create]
@@ -38,10 +39,14 @@ class Projects::NotesController < Projects::ApplicationController
 
     discussion = note.discussion
 
-    render json: {
-      resolved_by: note.resolved_by.try(:name),
-      discussion_headline_html: (view_to_html_string('discussions/_headline', discussion: discussion) if discussion)
-    }
+    if serialize_notes?
+      render_json_with_notes_serializer
+    else
+      render json: {
+        resolved_by: note.resolved_by.try(:name),
+        discussion_headline_html: (view_to_html_string('discussions/_headline', discussion: discussion) if discussion)
+      }
+    end
   end
 
   def unresolve
@@ -51,16 +56,27 @@ class Projects::NotesController < Projects::ApplicationController
 
     discussion = note.discussion
 
-    render json: {
-      discussion_headline_html: (view_to_html_string('discussions/_headline', discussion: discussion) if discussion)
-    }
+    if serialize_notes?
+      render_json_with_notes_serializer
+    else
+      render json: {
+        discussion_headline_html: (view_to_html_string('discussions/_headline', discussion: discussion) if discussion)
+      }
+    end
   end
 
   private
 
+  def render_json_with_notes_serializer
+    Notes::RenderService.new(current_user).execute([note], project)
+
+    render json: note_serializer.represent(note)
+  end
+
   def note
     @note ||= @project.notes.find(params[:id])
   end
+
   alias_method :awardable, :note
 
   def finder_params
diff --git a/app/controllers/projects/pages_domains_controller.rb b/app/controllers/projects/pages_domains_controller.rb
index b71f1e5fef4..4856be61e88 100644
--- a/app/controllers/projects/pages_domains_controller.rb
+++ b/app/controllers/projects/pages_domains_controller.rb
@@ -3,7 +3,7 @@ class Projects::PagesDomainsController < Projects::ApplicationController
 
   before_action :require_pages_enabled!
   before_action :authorize_update_pages!, except: [:show]
-  before_action :domain, only: [:show, :destroy, :verify]
+  before_action :domain, except: [:new, :create]
 
   def show
   end
@@ -24,8 +24,11 @@ class Projects::PagesDomainsController < Projects::ApplicationController
     redirect_to project_pages_domain_path(@project, @domain)
   end
 
+  def edit
+  end
+
   def create
-    @domain = @project.pages_domains.create(pages_domain_params)
+    @domain = @project.pages_domains.create(create_params)
 
     if @domain.valid?
       redirect_to project_pages_domain_path(@project, @domain)
@@ -34,6 +37,16 @@ class Projects::PagesDomainsController < Projects::ApplicationController
     end
   end
 
+  def update
+    if @domain.update(update_params)
+      redirect_to project_pages_path(@project),
+        status: 302,
+        notice: 'Domain was updated'
+    else
+      render 'edit'
+    end
+  end
+
   def destroy
     @domain.destroy
 
@@ -49,12 +62,12 @@ class Projects::PagesDomainsController < Projects::ApplicationController
 
   private
 
-  def pages_domain_params
-    params.require(:pages_domain).permit(
-      :certificate,
-      :key,
-      :domain
-    )
+  def create_params
+    params.require(:pages_domain).permit(:key, :certificate, :domain)
+  end
+
+  def update_params
+    params.require(:pages_domain).permit(:key, :certificate)
   end
 
   def domain
diff --git a/app/controllers/projects/project_members_controller.rb b/app/controllers/projects/project_members_controller.rb
index d7372beb9d3..e9b4679f94c 100644
--- a/app/controllers/projects/project_members_controller.rb
+++ b/app/controllers/projects/project_members_controller.rb
@@ -26,29 +26,6 @@ class Projects::ProjectMembersController < Projects::ApplicationController
     @project_member = @project.project_members.new
   end
 
-  def update
-    @project_member = @project.members_and_requesters.find(params[:id])
-      .present(current_user: current_user)
-
-    return render_403 unless can?(current_user, :update_project_member, @project_member)
-
-    @project_member.update_attributes(member_params)
-  end
-
-  def resend_invite
-    redirect_path = project_project_members_path(@project)
-
-    @project_member = @project.project_members.find(params[:id])
-
-    if @project_member.invite?
-      @project_member.resend_invite
-
-      redirect_to redirect_path, notice: 'The invitation was successfully resent.'
-    else
-      redirect_to redirect_path, alert: 'The invitation has already been accepted.'
-    end
-  end
-
   def import
     @projects = current_user.authorized_projects.order_id_desc
   end
@@ -67,12 +44,6 @@ class Projects::ProjectMembersController < Projects::ApplicationController
                 notice: notice)
   end
 
-  protected
-
-  def member_params
-    params.require(:project_member).permit(:user_id, :access_level, :expires_at)
-  end
-
   # MembershipActions concern
   alias_method :membershipable, :project
 end
diff --git a/app/controllers/projects/prometheus/metrics_controller.rb b/app/controllers/projects/prometheus/metrics_controller.rb
index b739d0f0f90..1dd886409a5 100644
--- a/app/controllers/projects/prometheus/metrics_controller.rb
+++ b/app/controllers/projects/prometheus/metrics_controller.rb
@@ -2,11 +2,12 @@ module Projects
   module Prometheus
     class MetricsController < Projects::ApplicationController
       before_action :authorize_admin_project!
+      before_action :require_prometheus_metrics!
 
       def active_common
         respond_to do |format|
           format.json do
-            matched_metrics = prometheus_service.matched_metrics || {}
+            matched_metrics = prometheus_adapter.query(:matched_metrics) || {}
 
             if matched_metrics.any?
               render json: matched_metrics
@@ -19,8 +20,12 @@ module Projects
 
       private
 
-      def prometheus_service
-        @prometheus_service ||= project.find_or_initialize_service('prometheus')
+      def prometheus_adapter
+        @prometheus_adapter ||= ::Prometheus::AdapterService.new(project).prometheus_adapter
+      end
+
+      def require_prometheus_metrics!
+        render_404 unless prometheus_adapter.can_query?
       end
     end
   end
diff --git a/app/controllers/projects/services_controller.rb b/app/controllers/projects/services_controller.rb
index daa5c88aae0..f14cb5f6a9f 100644
--- a/app/controllers/projects/services_controller.rb
+++ b/app/controllers/projects/services_controller.rb
@@ -3,7 +3,8 @@ class Projects::ServicesController < Projects::ApplicationController
 
   # Authorize
   before_action :authorize_admin_project!
-  before_action :service, only: [:edit, :update, :test]
+  before_action :ensure_service_enabled
+  before_action :service
 
   respond_to :html
 
@@ -23,26 +24,30 @@ class Projects::ServicesController < Projects::ApplicationController
   end
 
   def test
-    message = {}
+    if @service.can_test?
+      render json: service_test_response, status: :ok
+    else
+      render json: {}, status: :not_found
+    end
+  end
 
-    if @service.can_test? && @service.update_attributes(service_params[:service])
+  private
+
+  def service_test_response
+    if @service.update_attributes(service_params[:service])
       data = @service.test_data(project, current_user)
       outcome = @service.test(data)
 
-      unless outcome[:success]
-        message = { error: true, message: 'Test failed.', service_response: outcome[:result].to_s }
+      if outcome[:success]
+        {}
+      else
+        { error: true, message: 'Test failed.', service_response: outcome[:result].to_s }
       end
-
-      status = :ok
     else
-      status = :not_found
+      { error: true, message: 'Validations failed.', service_response: @service.errors.full_messages.join(',') }
     end
-
-    render json: message, status: status
   end
 
-  private
-
   def success_message
     if @service.active?
       "#{@service.title} activated."
@@ -54,4 +59,8 @@ class Projects::ServicesController < Projects::ApplicationController
   def service
     @service ||= @project.find_or_initialize_service(params[:id])
   end
+
+  def ensure_service_enabled
+    render_404 unless service
+  end
 end
diff --git a/app/controllers/projects/settings/ci_cd_controller.rb b/app/controllers/projects/settings/ci_cd_controller.rb
index 86717bb7242..259809f3429 100644
--- a/app/controllers/projects/settings/ci_cd_controller.rb
+++ b/app/controllers/projects/settings/ci_cd_controller.rb
@@ -13,12 +13,14 @@ module Projects
 
       def reset_cache
         if ResetProjectCacheService.new(@project, current_user).execute
-          flash[:notice] = _("Project cache successfully reset.")
+          respond_to do |format|
+            format.json { head :ok }
+          end
         else
-          flash[:error] = _("Unable to reset project cache.")
+          respond_to do |format|
+            format.json { head :bad_request }
+          end
         end
-
-        redirect_to project_pipelines_path(@project)
       end
 
       private
diff --git a/app/controllers/projects/tree_controller.rb b/app/controllers/projects/tree_controller.rb
index f752a46f828..ee9b5458282 100644
--- a/app/controllers/projects/tree_controller.rb
+++ b/app/controllers/projects/tree_controller.rb
@@ -36,7 +36,7 @@ class Projects::TreeController < Projects::ApplicationController
       end
 
       format.json do
-        page_title @path.presence || _("Files"), @ref, @project.name_with_namespace
+        page_title @path.presence || _("Files"), @ref, @project.full_name
 
         # n+1: https://gitlab.com/gitlab-org/gitlab-ce/issues/38261
         Gitlab::GitalyClient.allow_n_plus_1_calls do