85 lines
2.5 KiB
Python
85 lines
2.5 KiB
Python
from typing import Any, Dict
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from django.contrib.contenttypes.fields import GenericRelation
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from django.db import models
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from ..agenda.models import Item
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from ..core.models import Projector
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from ..mediafiles.models import Mediafile
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from ..utils.models import RESTModelMixin
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from .access_permissions import TopicAccessPermissions
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class TopicManager(models.Manager):
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"""
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Customized model manager to support our get_full_queryset method.
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"""
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def get_full_queryset(self):
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"""
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Returns the normal queryset with all topics. In the background all
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attachments and the related agenda item are prefetched from the
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database.
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"""
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return self.get_queryset().prefetch_related('attachments', 'agenda_items')
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class Topic(RESTModelMixin, models.Model):
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"""
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Model for slides with custom content. Used to be called custom slide.
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"""
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access_permissions = TopicAccessPermissions()
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objects = TopicManager()
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title = models.CharField(max_length=256)
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text = models.TextField(blank=True)
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attachments = models.ManyToManyField(Mediafile, blank=True)
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# In theory there could be one then more agenda_item. But we support only
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# one. See the property agenda_item.
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agenda_items = GenericRelation(Item, related_name='topics')
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class Meta:
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default_permissions = ()
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def __str__(self):
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return self.title
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def delete(self, skip_autoupdate=False, *args, **kwargs):
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"""
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Customized method to delete a topic. Ensures that a respective
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topic projector element is disabled.
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"""
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Projector.remove_any(
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skip_autoupdate=skip_autoupdate,
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name='topics/topic',
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id=self.pk)
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return super().delete(skip_autoupdate=skip_autoupdate, *args, **kwargs) # type: ignore
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"""
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Container for runtime information for agenda app (on create or update of this instance).
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"""
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agenda_item_update_information: Dict[str, Any] = {}
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@property
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def agenda_item(self):
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"""
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Returns the related agenda item.
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"""
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# We support only one agenda item so just return the first element of
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# the queryset.
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return self.agenda_items.all()[0]
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@property
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def agenda_item_id(self):
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"""
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Returns the id of the agenda item object related to this object.
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"""
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return self.agenda_item.pk
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def get_agenda_title(self):
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return self.title
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def get_agenda_list_view_title(self):
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return self.title
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