Fix Mirror User dropdown

CHANGELOG-EE

@@ -7,6 +7,7 @@ v 8.5.0 (unreleased)
 v 8.4.3
   - Elasticsearch: fix partial blob indexing on push
   - Elasticsearch: added advanced indexer for repositories
+  - Fix Mirror User dropdown
 
 v 8.4.2
   - Elasticsearch indexer performance improvements

app/controllers/autocomplete_controller.rb

@@ -8,7 +8,8 @@ class AutocompleteController < ApplicationController
     @users = @users.active
     @users = @users.reorder(:name)
 
-    if params[:push_code_to_protected_branches].present? && project
+    if params[:push_code_to_protected_branches].present? && params[:project_id].present?
+      project = Project.find_by(id: params[:project_id])
       @users = @users.to_a.select { |user| user.can?(:push_code_to_protected_branches, project) }.take(PER_PAGE)
     else
       @users = @users.page(params[:page]).per(PER_PAGE)

spec/controllers/autocomplete_controller_spec.rb

@@ -10,6 +10,7 @@ describe AutocompleteController do
     before do
       sign_in(user)
       project.team << [user, :master]
+      project.team << [user2, :developer]
     end
 
     let(:body) { JSON.parse(response.body) }
@@ -20,7 +21,7 @@ describe AutocompleteController do
       end
 
       it { expect(body).to be_kind_of(Array) }
-      it { expect(body.size).to eq 1 }
+      it { expect(body.size).to eq 2 }
       it { expect(body.first["username"]).to eq user.username }
     end
 
@@ -31,6 +32,16 @@ describe AutocompleteController do
 
       it { expect(response.status).to eq(404) }
     end
+
+    describe "GET #users that can push to protected branches" do
+      before do
+        get(:users, project_id: project.id, push_code_to_protected_branches: 'true')
+      end
+
+      it { expect(body).to be_kind_of(Array) }
+      it { expect(body.size).to eq 1 }
+      it { expect(body.first["username"]).to eq user.username }
+    end
   end
 
   context 'group members' do