Merge branch 'fix/gb/improve-merge-request-pipelines-api' into 'master'

Improve internal API for new merge request

Closes #27866

See merge request !9304

app/assets/javascripts/commit/pipelines/pipelines_table.js.es6

@@ -69,7 +69,9 @@ const PipelineStore = require('./pipelines_store');
       return pipelinesService.all()
         .then(response => response.json())
         .then((json) => {
-          this.store.storePipelines(json);
+          // depending of the endpoint the response can either bring a `pipelines` key or not.
+          const pipelines = json.pipelines || json;
+          this.store.storePipelines(pipelines);
           this.isLoading = false;
         })
         .catch(() => {

app/controllers/projects/merge_requests_controller.rb

@@ -245,9 +245,11 @@ class Projects::MergeRequestsController < Projects::ApplicationController
       format.json do
         define_pipelines_vars
 
-        render json: PipelineSerializer
+        render json: {
+          pipelines: PipelineSerializer
           .new(project: @project, user: @current_user)
           .represent(@pipelines)
+        }
       end
     end
   end

spec/controllers/projects/merge_requests_controller_spec.rb

@@ -43,7 +43,8 @@ describe Projects::MergeRequestsController do
           submit_new_merge_request(format: :json)
 
           expect(response).to be_ok
-          expect(json_response).not_to be_empty
+          expect(json_response).to have_key 'pipelines'
+          expect(json_response['pipelines']).not_to be_empty
         end
       end
     end