70 lines
2 KiB
Python
70 lines
2 KiB
Python
from django.db import models
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from django.contrib.auth.models import Group
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from django.contrib.auth import get_user_model
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from django.contrib.contenttypes.fields import (
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GenericForeignKey, GenericRelation
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)
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from django.contrib.contenttypes.models import ContentType
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from django.utils.translation import ugettext_lazy as _
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User = get_user_model()
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class Subscription(models.Model):
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content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
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object_id = models.PositiveIntegerField()
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content_object = GenericForeignKey('content_type', 'object_id')
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class Meta:
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abstract = True
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class UserSubscription(Subscription):
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user = models.ForeignKey(
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User,
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on_delete=models.CASCADE,
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)
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is_unsub = models.BooleanField(
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_("désinscription"),
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default=False
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)
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class Meta:
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verbose_name = _("souscription utilisateur")
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unique_together = ("user", "content_type", "object_id")
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class GroupSubscription(Subscription):
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group = models.ForeignKey(
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Group,
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on_delete=models.CASCADE,
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)
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class Meta:
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verbose_name = _("souscription en groupe")
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unique_together = ("group", "content_type", "object_id")
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class SubscriptionMixin(models.Model):
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user_subscriptions = GenericRelation(UserSubscription)
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group_subscriptions = GenericRelation(GroupSubscription)
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def get_all_subscribers(self):
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subscribed_users = User.objects.filter(
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usersubscription__in=self.user_subscriptions.filter(is_unsub=False)
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)
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subscribed_groups = Group.objects.filter(
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groupsubscription__in=self.group_subscriptions.all()
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)
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subscribers_from_groups = User.objects.filter(
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groups__in=subscribed_groups,
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).exclude(
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usersubscription__in=self.user_subscriptions.filter(
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is_unsub=True
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)
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)
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return subscribed_users.union(subscribers_from_groups)
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class Meta:
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abstract = True
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