fix: Un delete admin file

Author: jawad-khan

openedx/core/djangoapps/notifications/admin.py

@@ -0,0 +1,116 @@
+"""
+Django Admin for Notifications
+"""
+
+from django.contrib import admin
+from django.utils.translation import gettext_lazy as _
+
+from .base_notification import COURSE_NOTIFICATION_APPS, COURSE_NOTIFICATION_TYPES
+from .models import CourseNotificationPreference, Notification
+
+
+class NotificationAppNameListFilter(admin.SimpleListFilter):
+    """
+    Shows list filter in django admin of notification apps
+    """
+    title = _("Notification App")
+    parameter_name = "app_name"
+
+    def lookups(self, request, model_admin):
+        lookup_list = [
+            (app_name, app_name)
+            for app_name in COURSE_NOTIFICATION_APPS.keys()
+        ]
+        return lookup_list
+
+    def queryset(self, request, queryset):
+        app_name = self.value()
+        if app_name not in COURSE_NOTIFICATION_APPS.keys():
+            return queryset
+        return queryset.filter(app_name=app_name)
+
+
+class NotificationTypeListFilter(admin.SimpleListFilter):
+    """
+    Shows list filter in django admin of notification types
+    """
+    title = _("Notification Type")
+    parameter_name = "notification_type"
+
+    def lookups(self, request, model_admin):
+        lookup_list = [
+            (notification_type, notification_type)
+            for notification_type in COURSE_NOTIFICATION_TYPES.keys()
+        ]
+        return lookup_list
+
+    def queryset(self, request, queryset):
+        notification_type = self.value()
+        if notification_type not in COURSE_NOTIFICATION_TYPES.keys():
+            return queryset
+        return queryset.filter(notification_type=notification_type)
+
+
+class NotificationAdmin(admin.ModelAdmin):
+    """
+    Admin for Notifications
+    """
+    raw_id_fields = ('user',)
+    search_fields = ('course_id', 'app_name', 'notification_type', 'user__username')
+    list_filter = (NotificationAppNameListFilter, NotificationTypeListFilter)
+
+
+class CourseNotificationPreferenceAdmin(admin.ModelAdmin):
+    """
+    Admin for Course Notification Preferences
+    """
+    model = CourseNotificationPreference
+    raw_id_fields = ('user',)
+    list_display = ('get_username', 'course_id')
+    search_fields = ('course_id', 'user__username')
+    search_help_text = _('Search by username, course_id. '
+                         'Specify fields with username: or course_id: prefixes. '
+                         'If no prefix is specified, search will be done on username. \n'
+                         'Examples: \n'
+                         ' - testuser (default username search) \n'
+                         ' - username:testuser (username keyword search) \n'
+                         ' - course_id:course-v1:edX+DemoX+Demo_Course (course_id keyword search) \n'
+                         ' - username:testuser, course_id:course-v1:edX+DemoX+Demo_Course (combined keyword search) \n'
+                         )
+
+    @admin.display(description='Username', ordering='user__username')
+    def get_username(self, obj):
+        return obj.user.username
+
+    def get_queryset(self, request):
+        queryset = super().get_queryset(request)
+        return queryset.select_related("user").only("id", "user__username", "course_id")
+
+    def get_search_results(self, request, queryset, search_term):
+        """
+        Custom search for CourseNotificationPreference model
+        """
+        if search_term:
+            criteria = search_term.split(',')
+
+            for criterion in criteria:
+                criterion = criterion.strip()
+                if criterion.startswith('username:'):
+                    queryset = queryset.filter(user__username=criterion.split(':')[1])
+
+                elif criterion.startswith('course_id:'):
+                    criteria = criterion.split(':')
+                    course_id = ':'.join(criteria[1:]).strip()
+                    queryset = queryset.filter(course_id=course_id)
+
+                else:
+                    queryset = queryset.filter(user__username=search_term)
+
+        else:
+            queryset = queryset.all()
+
+        return queryset, True
+
+
+admin.site.register(Notification, NotificationAdmin)
+admin.site.register(CourseNotificationPreference, CourseNotificationPreferenceAdmin)