Move group_dropdown_label to ce helper

app/helpers/issuables_helper.rb

@@ -131,6 +131,19 @@ module IssuablesHelper
     end
   end
 
+  def group_dropdown_label(group_id, default_label)
+    return default_label if group_id.nil?
+    return "Any group" if group_id == "0"
+
+    group = ::Group.find_by(id: group_id)
+
+    if group
+      group.full_name
+    else
+      default_label
+    end
+  end
+
   def milestone_dropdown_label(milestone_title, default_label = "Milestone")
     title =
       case milestone_title

spec/helpers/issuables_helper_spec.rb

@@ -21,6 +21,27 @@ describe IssuablesHelper do
     end
   end
 
+  describe '#group_dropdown_label' do
+    let(:group)  { create(:group) }
+    let(:default) { 'default label' }
+
+    it 'returns default group label when group_id is nil' do
+      expect(group_dropdown_label(nil, default)).to eq('default label')
+    end
+
+    it 'returns "any group" when group_id is 0' do
+      expect(group_dropdown_label('0', default)).to eq('Any group')
+    end
+
+    it 'returns group full path when a group was found for the provided id' do
+      expect(group_dropdown_label(group.id, default)).to eq(group.full_name)
+    end
+
+    it 'returns default label when a group was not found for the provided id' do
+      expect(group_dropdown_label(9999, default)).to eq('default label')
+    end
+  end
+
   describe '#issuable_labels_tooltip' do
     it 'returns label text with no labels' do
       expect(issuable_labels_tooltip([])).to eq("Labels")