Add signature verification badge to compare view

app/assets/javascripts/gpg_badges.js

@@ -7,12 +7,12 @@ import { __ } from '~/locale';
 export default class GpgBadges {
   static fetch() {
     const badges = $('.js-loading-gpg-badge');
-    const form = $('.commits-search-form');
+    const tag = $('.js-signature-container');
 
     badges.html('<i class="fa fa-spinner fa-spin"></i>');
 
-    const params = parseQueryStringIntoObject(form.serialize());
-    return axios.get(form.data('signaturesPath'), { params })
+    const params = parseQueryStringIntoObject(tag.serialize());
+    return axios.get(tag.data('signaturesPath'), { params })
     .then(({ data }) => {
       data.signatures.forEach((signature) => {
         badges.filter(`[data-commit-sha="${signature.commit_sha}"]`).replaceWith(signature.html);

app/assets/javascripts/pages/projects/compare/show/index.js

 import Diff from '~/diff';
 import initChangesDropdown from '~/init_changes_dropdown';
+import GpgBadges from '~/gpg_badges';
 
 document.addEventListener('DOMContentLoaded', () => {
   new Diff(); // eslint-disable-line no-new
   const paddingTop = 16;
   initChangesDropdown(document.querySelector('.navbar-gitlab').offsetHeight - paddingTop);
+  GpgBadges.fetch();
 });

app/controllers/projects/compare_controller.rb

@@ -8,8 +8,11 @@ class Projects::CompareController < Projects::ApplicationController
   # Authorize
   before_action :require_non_empty_project
   before_action :authorize_download_code!
-  before_action :define_ref_vars, only: [:index, :show, :diff_for_path]
-  before_action :define_diff_vars, only: [:show, :diff_for_path]
+  # Defining ivars
+  before_action :define_diffs, only: [:show, :diff_for_path]
+  before_action :define_environment, only: [:show]
+  before_action :define_diff_notes_disabled, only: [:show, :diff_for_path]
+  before_action :define_commits, only: [:show, :diff_for_path, :signatures]
   before_action :merge_request, only: [:index, :show]
 
   def index
@@ -22,9 +25,9 @@ class Projects::CompareController < Projects::ApplicationController
   end
 
   def diff_for_path
-    return render_404 unless @compare
+    return render_404 unless compare
 
-    render_diff_for_path(@compare.diffs(diff_options))
+    render_diff_for_path(compare.diffs(diff_options))
   end
 
   def create
@@ -41,30 +44,60 @@ class Projects::CompareController < Projects::ApplicationController
     end
   end
 
+  def signatures
+    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
+
   private
 
-  def define_ref_vars
-    @start_ref = Addressable::URI.unescape(params[:from])
+  def compare
+    return @compare if defined?(@compare)
+
+    @compare = CompareService.new(@project, head_ref).execute(@project, start_ref)
+  end
+
+  def start_ref
+    @start_ref ||= Addressable::URI.unescape(params[:from])
+  end
+
+  def head_ref
+    return @ref if defined?(@ref)
+
     @ref = @head_ref = Addressable::URI.unescape(params[:to])
   end
 
-  def define_diff_vars
-    @compare = CompareService.new(@project, @head_ref)
-      .execute(@project, @start_ref)
+  def define_commits
+    @commits = compare.present? ? prepare_commits_for_rendering(compare.commits) : []
+  end
 
-    if @compare
-      @commits = prepare_commits_for_rendering(@compare.commits)
-      @diffs = @compare.diffs(diff_options)
+  def define_diffs
+    @diffs = compare.present? ? compare.diffs(diff_options) : []
+  end
 
-      environment_params = @repository.branch_exists?(@head_ref) ? { ref: @head_ref } : { commit: @compare.commit }
+  def define_environment
+    if compare
+      environment_params = @repository.branch_exists?(head_ref) ? { ref: head_ref } : { commit: compare.commit }
       @environment = EnvironmentsFinder.new(@project, current_user, environment_params).execute.last
-
-      @diff_notes_disabled = true
     end
   end
 
+  def define_diff_notes_disabled
+    @diff_notes_disabled = compare.present?
+  end
+
   def merge_request
     @merge_request ||= MergeRequestsFinder.new(current_user, project_id: @project.id).execute.opened
-      .find_by(source_project: @project, source_branch: @head_ref, target_branch: @start_ref)
+      .find_by(source_project: @project, source_branch: head_ref, target_branch: start_ref)
   end
 end

app/views/projects/commits/show.html.haml

@@ -24,7 +24,7 @@
               = link_to _("Create merge request"), create_mr_path(@repository.root_ref, @ref), class: 'btn btn-success'
 
           .control
-            = form_tag(project_commits_path(@project, @id), method: :get, class: 'commits-search-form', data: { 'signatures-path' => namespace_project_signatures_path }) do
+            = form_tag(project_commits_path(@project, @id), method: :get, class: 'commits-search-form js-signature-container', data: { 'signatures-path' => namespace_project_signatures_path }) do
               = search_field_tag :search, params[:search], { placeholder: _('Filter by commit message'), id: 'commits-search', class: 'form-control search-text-input input-short', spellcheck: false }
           .control
             = link_to project_commits_path(@project, @ref, rss_url_options), title: _("Commits feed"), class: 'btn' do

app/views/projects/compare/_form.html.haml

-= form_tag project_compare_index_path(@project), method: :post, class: 'form-inline js-requires-input' do
+= form_tag project_compare_index_path(@project), method: :post, class: 'form-inline js-requires-input js-signature-container', data: { 'signatures-path' => signatures_namespace_project_compare_index_path } do
   .clearfix
     - if params[:to] && params[:from]
       .compare-switch-container

changelogs/unreleased/44879.yml

+---
+title: Add the signature verfication badge to the compare view
+merge_request: 18245
+author: Marc Shaw
+type: added

config/routes/repository.rb

@@ -18,6 +18,7 @@ scope format: false do
   resources :compare, only: [:index, :create] do
     collection do
       get :diff_for_path
+      get :signatures
     end
   end
 

spec/javascripts/gpg_badges_spec.js

@@ -17,7 +17,7 @@ describe('GpgBadges', () => {
     mock = new MockAdapter(axios);
     setFixtures(`
       <form
-        class="commits-search-form" data-signatures-path="/hello" action="/hello"
+        class="commits-search-form js-signature-container" data-signatures-path="/hello" action="/hello"
         method="get">
         <input name="utf8" type="hidden" value="✓">
         <input type="search" name="search" id="commits-search"class="form-control search-text-input input-short">