clone cms with menus, make menus standalone app

cms/test_utils/project/sampleapp/admin.py

@@ -0,0 +1,46 @@
+from django.contrib import admin
+
+from cms.admin.placeholderadmin import FrontendEditableAdminMixin
+from cms.admin.utils import GrouperModelAdmin
+from cms.test_utils.project.sampleapp.models import (
+    Category,
+    GrouperModel,
+    Picture,
+    SampleAppConfig,
+    SimpleGrouperModel,
+    SomeEditableModel,
+)
+
+
+class PictureInline(admin.StackedInline):
+    model = Picture
+
+
+class CategoryAdmin(admin.ModelAdmin):
+    inlines = [PictureInline]
+
+
+class SomeEditableAdmin(FrontendEditableAdminMixin, admin.ModelAdmin):
+    pass
+
+
+class GrouperAdmin(GrouperModelAdmin):
+    extra_grouping_fields = ("language",)
+    list_display = ("category_name", "content__secret_greeting", "admin_list_actions")
+
+    def can_change_content(self, request, content_obj):
+        return getattr(self, "change_content", True)
+
+
+class SimpleGrouperAdmin(GrouperModelAdmin):
+    list_display = ("category_name", "content__secret_greeting", "admin_list_actions")
+
+    def can_change_content(self, request, content_obj):
+        return getattr(self, "change_content", True)
+
+
+admin.site.register(Category, CategoryAdmin)
+admin.site.register(SampleAppConfig)
+admin.site.register(SomeEditableModel, SomeEditableAdmin)
+admin.site.register(GrouperModel, GrouperAdmin)
+admin.site.register(SimpleGrouperModel, SimpleGrouperAdmin)