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40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
from django.db import models
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from django.db.models import CASCADE
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from django.db.models.signals import post_delete, post_save
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from zerver.lib.cache import (
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cache_delete,
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realm_alert_words_automaton_cache_key,
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realm_alert_words_cache_key,
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)
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from zerver.models.realms import Realm
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from zerver.models.users import UserProfile
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class AlertWord(models.Model):
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# Realm isn't necessary, but it's a nice denormalization. Users
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# never move to another realm, so it's static, and having Realm
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# here optimizes the main query on this table, which is fetching
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# all the alert words in a realm.
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realm = models.ForeignKey(Realm, db_index=True, on_delete=CASCADE)
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user_profile = models.ForeignKey(UserProfile, on_delete=CASCADE)
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# Case-insensitive name for the alert word.
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word = models.TextField()
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class Meta:
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unique_together = ("user_profile", "word")
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def flush_realm_alert_words(realm_id: int) -> None:
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cache_delete(realm_alert_words_cache_key(realm_id))
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cache_delete(realm_alert_words_automaton_cache_key(realm_id))
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def flush_alert_word(*, instance: AlertWord, **kwargs: object) -> None:
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realm_id = instance.realm_id
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flush_realm_alert_words(realm_id)
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post_save.connect(flush_alert_word, sender=AlertWord)
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post_delete.connect(flush_alert_word, sender=AlertWord)
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