update enum class to django text choices (#32)

backend/notifications/models.py

@@ -1,32 +1,31 @@
 from django.db import models
-from enum import Enum
 
 
 # TODO - state definition for notification, notification log, and reservation
-class EnumNotifcationStatus(Enum):
+class EnumNotifcationStatus(models.TextChoices):
     PENDING = 'PENDING'
     SENDING = 'SENDING'
     SUCCESS = 'SUCCESS'
     PARTIAL_SUCCESS = 'PARTIAL_SUCCESS'
     FAILURE = 'FAILURE'
 
 
-class EnumNotificationType(Enum):
+class EnumNotificationType(models.TextChoices):
     EMAIL = 'EMAIL'
     SMS = 'SMS'
     API = 'API'
 
 
 class Notification(models.Model):
-    message = models.TextField() # TODO - should be changed to foreign key to message 
+    message = models.TextField()  # TODO - should be changed to foreign key to message
     project = models.ForeignKey('project.Project', on_delete=models.CASCADE)
-    status = models.CharField(max_length=20, choices=[(tag, tag.value) for tag in EnumNotifcationStatus])
-    type = models.CharField(max_length=20, choices=[(tag, tag.value) for tag in EnumNotificationType])
+    status = models.CharField(max_length=20, choices=EnumNotifcationStatus.choices)
+    type = models.CharField(max_length=20, choices=EnumNotificationType.choices)
 
 
 class NotificationLog(models.Model):
     notification = models.ForeignKey('Notification', on_delete=models.CASCADE)
-    status = models.CharField(max_length=20, choices=[(tag, tag.value) for tag in EnumNotifcationStatus])
+    status = models.CharField(max_length=20, choices=EnumNotificationType.choices)
     request = models.JSONField()
     response = models.JSONField()
     created_at = models.DateTimeField(auto_now_add=True)
@@ -37,5 +36,5 @@ class NotificationLog(models.Model):
 class Reservation(models.Model):
     notifcation = models.ForeignKey('Notification', on_delete=models.CASCADE)
     reserved_at = models.DateTimeField(auto_now_add=True)
-    status = models.CharField(max_length=20, choices=[(tag, tag.value) for tag in EnumNotifcationStatus])
+    status = models.CharField(max_length=20, choices=EnumNotifcationStatus.choices)
     # TODO - add target user

backend/notifications/serializers.py

@@ -7,3 +7,4 @@ class NotificationSerializer(serializers.ModelSerializer):
     class Meta:
         model = Notification
         fields = ('id', 'message', 'project', 'status', 'type',)
+