87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
from django.conf import settings
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from django.db import models
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from openslides.utils.manager import BaseManager
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from ..utils.auth import has_perm, in_some_groups
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from ..utils.models import CASCADE_AND_AUTOUPDATE, RESTModelMixin
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from .access_permissions import ChatGroupAccessPermissions, ChatMessageAccessPermissions
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class ChatGroupManager(BaseManager):
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"""
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Customized model manager to support our get_prefetched_queryset method.
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"""
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def get_prefetched_queryset(self, *args, **kwargs):
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""""""
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return (
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super()
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.get_prefetched_queryset(*args, **kwargs)
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.prefetch_related("access_groups")
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)
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class ChatGroup(RESTModelMixin, models.Model):
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""""""
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access_permissions = ChatGroupAccessPermissions()
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objects = ChatGroupManager()
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name = models.CharField(max_length=256)
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access_groups = models.ManyToManyField(
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settings.AUTH_GROUP_MODEL, blank=True, related_name="chat_access_groups"
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)
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class Meta:
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default_permissions = ()
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permissions = (("can_manage", "Can manage chat"),)
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def __str__(self):
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return self.name
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def can_access(self, user):
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if has_perm(user.id, "chat.can_manage"):
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return True
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if not self.access_groups.exists():
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return True
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return in_some_groups(user.id, self.access_groups.values_list(flat=True))
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class ChatMessageManager(BaseManager):
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"""
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Customized model manager to support our get_prefetched_queryset method.
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"""
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def get_prefetched_queryset(self, *args, **kwargs):
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""""""
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return (
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super()
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.get_prefetched_queryset(*args, **kwargs)
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.prefetch_related("chatgroup", "chatgroup__access_groups")
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)
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class ChatMessage(RESTModelMixin, models.Model):
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""""""
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access_permissions = ChatMessageAccessPermissions()
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objects = ChatMessageManager()
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text = models.CharField(max_length=512)
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timestamp = models.DateTimeField(auto_now_add=True)
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chatgroup = models.ForeignKey(
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ChatGroup, on_delete=CASCADE_AND_AUTOUPDATE, related_name="messages"
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)
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username = models.CharField(max_length=256)
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class Meta:
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default_permissions = ()
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def __str__(self):
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return f"{self.username} ({self.timestamp}): {self.text}"
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