Makes the html attribute in the json output optional with the option html_render=false

app/assets/javascripts/ide/services/index.js

@@ -9,7 +9,7 @@ export default {
     return Vue.http.get(endpoint, { params: { format: 'json' } });
   },
   getFileData(endpoint) {
-    return Vue.http.get(endpoint, { params: { format: 'json' } });
+    return Vue.http.get(endpoint, { params: { format: 'json', html_render: 'false' } });
   },
   getRawFileData(file) {
     if (file.tempFile) {

app/controllers/concerns/renders_blob.rb

@@ -14,6 +14,8 @@ module RendersBlob
 
     return unless viewer
 
+    return {} if params[:html_render] == 'false' 
+
     {
       html: view_to_html_string("projects/blob/_viewer", viewer: viewer, load_async: false)
     }

spec/controllers/projects/blob_controller_spec.rb

@@ -55,6 +55,24 @@ describe Projects::BlobController do
           expect(json_response).to have_key 'raw_path'
         end
       end
+
+      context "html_render=false" do
+        let(:id) { 'master/README.md' }
+
+        before do
+          get(:show,
+              namespace_id: project.namespace,
+              project_id: project,
+              id: id,
+              format: :json,
+              html_render: false)
+        end
+
+        it do
+          expect(response).to be_ok
+          expect(json_response).note_to have_key 'html'
+        end
+      end
     end
 
     context 'with tree path' do