kopia lustrzana https://gitlab.com/marnanel/chapeau
145 wiersze
3.4 KiB
Python
145 wiersze
3.4 KiB
Python
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from django.db import models
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from django.conf import settings
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from .acobject import AcObject
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import logging
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logger = logging.getLogger(name='kepi')
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class Collection(models.Model):
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owner = models.ForeignKey(
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'bowler_pub.AcActor',
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on_delete = models.DO_NOTHING,
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)
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name = models.URLField(
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max_length=255,
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)
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields = ['owner', 'name'],
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name = 'owner and name',
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),
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]
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@property
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def path(self):
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return self.owner.list_path(self.name)
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def append(self, what):
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logger.info('Collection %s gains %s',
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self, what)
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newMember = CollectionMember(
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parent = self,
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member = what,
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)
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newMember.save()
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def __str__(self):
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return '%s/%s' % (
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self.owner.id,
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self.name,
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)
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@classmethod
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def get(cls,
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user,
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collection,
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create_if_missing=True):
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"""
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Returns a particular Collection.
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If the named collection does not exist,
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and if create_if_missing is True (the default),
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then an empty collection of that name will be created and returned.
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Otherwise, we raise KeyError.
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"""
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logger.debug('Finding collection "%s" for %s',
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collection, user.id)
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try:
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result = cls.objects.get(
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owner = user,
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name = collection,
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)
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logger.debug(' -- found %s', result)
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return result
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except cls.DoesNotExist:
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if create_if_missing:
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newCollection = cls(
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owner = user,
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name = collection,
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)
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newCollection.save()
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logger.debug(' -- not found; created %s',
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newCollection)
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return newCollection
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else:
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logger.debug(' -- not found')
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raise KeyError(collection)
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@classmethod
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def build_name(cls,
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username, collectionname):
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if username is None:
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raise ValueError('Username not supplied')
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if collectionname is None:
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raise ValueError('Collectionname not supplied')
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if '/' in username:
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raise ValueError('Username cannot contain slashes')
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if '/' in collectionname:
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raise ValueError('Collectionname cannot contain slashes')
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if not username:
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raise ValueError('Username cannot be blank')
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if not collectionname:
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raise ValueError('Collectionname cannot be blank')
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return '%s/%s' % (username, collectionname)
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@property
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def members(self):
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result = AcObject.objects.filter(
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collectionmember__parent = self,
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)
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return result
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class CollectionMember(models.Model):
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parent = models.ForeignKey(
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Collection,
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on_delete = models.CASCADE,
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)
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member = models.ForeignKey(
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'bowler_pub.AcObject',
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on_delete = models.DO_NOTHING,
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)
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def __str__(self):
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return ' -- %s %s' % (
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self.parent,
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self.member,
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)
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