Fix check is purchased SchoolSchedule

apps/school/models.py

@@ -45,11 +45,12 @@ class SchoolSchedule(models.Model):
         return now().isoweekday() == self.weekday and now().time() >= self.start_at
 
     def is_purchased(self):
+        date_now = now().date()
         try:
             school_payment = payment_models.SchoolPayment.objects.get(
                 weekdays__contains=[self.weekday],
-                date_start__gte=now().date(),
+                date_start__lte=date_now,
-                date_end__lte=now().date(),
+                date_end__gte=date_now,
             )
         except payment_models.SchoolPayment.DoesNotExist:
             return False