OpenSlides/server/openslides/topics/models.py

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from django.db import models
from openslides.utils.manager import BaseManager
from ..agenda.mixins import AgendaItemWithListOfSpeakersMixin
from ..mediafiles.models import Mediafile
from ..utils.models import RESTModelMixin
from .access_permissions import TopicAccessPermissions
class TopicManager(BaseManager):
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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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"""
Returns the normal queryset with all topics. In the background all
attachments and the related agenda item are prefetched from the
database.
"""
return (
super()
.get_prefetched_queryset(*args, **kwargs)
.prefetch_related("attachments", "lists_of_speakers", "agenda_items")
)
class Topic(RESTModelMixin, AgendaItemWithListOfSpeakersMixin, models.Model):
"""
Model for slides with custom content. Used to be called custom slide.
"""
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access_permissions = TopicAccessPermissions()
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objects = TopicManager()
title = models.CharField(max_length=256)
text = models.TextField(blank=True)
attachments = models.ManyToManyField(Mediafile, blank=True)
class Meta:
default_permissions = ()
def __str__(self):
return self.title
def get_title_information(self):
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return {"title": self.title}