[GREEN] Add download_query to JadwalDonor

backend/donor/models.py

@@ -45,6 +45,10 @@ class JadwalDonor(models.Model):
         time_end = localtime(self.time_end)
         return f"{self.location}, {time_start.date()} ({time_start.time()} - {time_end.time()})"
 
+    @classmethod
+    def download_query(cls, ids):
+        return DaftarDonor.objects.filter(jadwal_donor__id__in=ids, has_attended=True)
+
     class Meta:
         pass