moviewyrm/bookwyrm/models/notification.py

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""" alert a user to activity """
from django.db import models
from .base_model import BookWyrmModel
NotificationType = models.TextChoices(
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"NotificationType",
"FAVORITE REPLY MENTION TAG FOLLOW FOLLOW_REQUEST BOOST IMPORT ADD",
)
class Notification(BookWyrmModel):
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""" you've been tagged, liked, followed, etc """
user = models.ForeignKey("User", on_delete=models.CASCADE)
related_book = models.ForeignKey("Edition", on_delete=models.CASCADE, null=True)
related_user = models.ForeignKey(
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"User", on_delete=models.CASCADE, null=True, related_name="related_user"
)
related_status = models.ForeignKey("Status", on_delete=models.CASCADE, null=True)
related_import = models.ForeignKey("ImportJob", on_delete=models.CASCADE, null=True)
related_list_item = models.ForeignKey(
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"ListItem", on_delete=models.CASCADE, null=True
)
read = models.BooleanField(default=False)
notification_type = models.CharField(
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max_length=255, choices=NotificationType.choices
)
def save(self, *args, **kwargs):
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""" save, but don't make dupes """
# there's probably a better way to do this
if self.__class__.objects.filter(
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user=self.user,
related_book=self.related_book,
related_user=self.related_user,
related_status=self.related_status,
related_import=self.related_import,
related_list_item=self.related_list_item,
notification_type=self.notification_type,
).exists():
return
super().save(*args, **kwargs)
class Meta:
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""" checks if notifcation is in enum list for valid types """
constraints = [
models.CheckConstraint(
check=models.Q(notification_type__in=NotificationType.values),
name="notification_type_valid",
)
]