python - SiteAdmin をサブクラス化した後、アプリケーションの Django 管理ツール メニューが表示されない

Question

私はdjango-admin-toolsでDjangoを使用しています。SiteAdmin をサブクラス化し、それを使用して管理者クラスを登録した後、アプリケーション メニュー全体が消えます。index と app_index に対する私の変更は、画像プロパティを admin_model から model_dict に追加するだけです

class CustomAdminSite(AdminSite):
    @never_cache
    def index(self, request, extra_context=None):
        """
        Displays the main admin index page, which lists all of the installed
        apps that have been registered in this site.
        """
        app_dict = {}
        user = request.user
        for model, model_admin in self._registry.items():
            app_label = model._meta.app_label
            has_module_perms = user.has_module_perms(app_label)

            if has_module_perms:
                perms = model_admin.get_model_perms(request)

                # Check whether user has any perm for this module.
                # If so, add the module to the model_list.
                if True in perms.values():
                    info = (app_label, model._meta.module_name)
                    model_dict = {
                        'name': capfirst(model._meta.verbose_name_plural),
                        'perms': perms,
                    }
                    if hasattr(model_admin, 'picture'):model_dict['picture'] = model_admin.picture
                    if perms.get('change', False):
                        try:
                            model_dict['admin_url'] = reverse('admin:%s_%s_changelist' % info, current_app=self.name)
                        except NoReverseMatch:
                            pass
                    if perms.get('add', False):
                        try:
                            model_dict['add_url'] = reverse('admin:%s_%s_add' % info, current_app=self.name)
                        except NoReverseMatch:
                            pass
                    if app_label in app_dict:
                        app_dict[app_label]['models'].append(model_dict)
                    else:
                        app_dict[app_label] = {
                            'name': app_label.title(),
                            'app_url': reverse('admin:app_list', kwargs={'app_label': app_label}, current_app=self.name),
                            'has_module_perms': has_module_perms,
                            'models': [model_dict],
                        }

        # Sort the apps alphabetically.
        app_list = list(six.itervalues(app_dict))
        app_list.sort(key=lambda x: x['name'])

        # Sort the models alphabetically within each app.
        for app in app_list:
            app['models'].sort(key=lambda x: x['name'])

        context = {
            'title': _('Site administration'),
            'app_list': app_list,
        }
        context.update(extra_context or {})
        return TemplateResponse(request, self.index_template or
                                'admin/index.html', context,
                                current_app=self.name)


    def app_index(self, request, app_label, extra_context=None):
        user = request.user
        has_module_perms = user.has_module_perms(app_label)
        app_dict = {}
        for model, model_admin in self._registry.items():
            if app_label == model._meta.app_label:
                if has_module_perms:
                    perms = model_admin.get_model_perms(request)

                    # Check whether user has any perm for this module.
                    # If so, add the module to the model_list.
                    if True in perms.values():
                        info = (app_label, model._meta.module_name)
                        model_dict = {
                            'name': capfirst(model._meta.verbose_name_plural),
                            'perms': perms,
                        }
                        if hasattr(model_admin, 'picture'):model_dict['picture'] = model_admin.picture
                        if perms.get('change', False):
                            try:
                                model_dict['admin_url'] = reverse('admin:%s_%s_changelist' % info, current_app=self.name)
                            except NoReverseMatch:
                                pass
                        if perms.get('add', False):
                            try:
                                model_dict['add_url'] = reverse('admin:%s_%s_add' % info, current_app=self.name)
                            except NoReverseMatch:
                                pass
                        if app_dict:
                            app_dict['models'].append(model_dict),
                        else:
                            # First time around, now that we know there's
                            # something to display, add in the necessary meta
                            # information.
                            app_dict = {
                                'name': app_label.title(),
                                'app_url': '',
                                'has_module_perms': has_module_perms,
                                'models': [model_dict],
                            }
        if not app_dict:
            raise Http404('The requested admin page does not exist.')
        # Sort the models alphabetically within each app.
        app_dict['models'].sort(key=lambda x: x['name'])
        context = {
            'title': _('%s administration') % capfirst(app_label),
            'app_list': [app_dict],
        }
        context.update(extra_context or {})

        return TemplateResponse(request, self.app_index_template or [
            'admin/%s/app_index.html' % app_label,
            'admin/app_index.html'
        ], context, current_app=self.name)


custom_site = CustomAdminSite(name='admin')
custom_site.register(Group, GroupAdmin)
custom_site.register(User, UserAdmin)
custom_site.register(Site, SiteAdmin)

上記と同じ方法ですべてのアプリ モデルを登録しました。認証とサイトのメニューは表示されますが、アプリとその model_admin のいずれも表示されません