Allow branch names ending with .json for graph and network page (!5579)

CHANGELOG

@@ -34,6 +34,7 @@ v 8.11.0 (unreleased)
   - Gitlab::Metrics.current_transaction needs to be public for RailsQueueDuration
   - Fix search for notes which belongs to deleted objects
   - Add GitLab Workhorse version to admin dashboard (Katarzyna Kobierska Ula Budziszewska)
+  - Allow branch names ending with .json for graph and network page !5579 (winniehell)
   - Add the `sprockets-es6` gem
   - Multiple trigger variables show in separate lines (Katarzyna Kobierska Ula Budziszewska)
   - Profile requests when a header is passed

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

@@ -32,7 +32,7 @@
 :javascript
   $.ajax({
     type: "GET",
-    url: "#{namespace_project_graph_path(@project.namespace, @project, current_ref, :json)}",
+    url: "#{namespace_project_graph_path(@project.namespace, @project, current_ref, format: :json)}",
     dataType: "json",
     success: function (data) {
       var graph = new ContributorsStatGraph();

config/routes.rb

@@ -626,15 +626,19 @@ Rails.application.routes.draw do
 
         get '/compare/:from...:to', to: 'compare#show', as: 'compare', constraints: { from: /.+/, to: /.+/ }
 
-        resources :network, only: [:show], constraints: { id: /(?:[^.]|\.(?!json$))+/, format: /json/ }
+        # Don't use format parameter as file extension (old 3.0.x behavior)
+        # See http://guides.rubyonrails.org/routing.html#route-globbing-and-wildcard-segments
+        scope format: false do
+          resources :network, only: [:show], constraints: { id: Gitlab::Regex.git_reference_regex }
 
-        resources :graphs, only: [:show], constraints: { id: /(?:[^.]|\.(?!json$))+/, format: /json/ } do
+          resources :graphs, only: [:show], constraints: { id: Gitlab::Regex.git_reference_regex } do
             member do
               get :commits
               get :ci
               get :languages
             end
           end
+        end
 
         resources :snippets, constraints: { id: /\d+/ } do
           member do