83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.contenttypes import generic
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class PermissionManager(models.Manager):
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def get_for_holder(self, holder):
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ct = ContentType.objects.get_for_model(holder)
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return [Permission.objects.get(id=id) for id in PermissionHolder.objects.filter(holder_type=ct,holder_id=holder.id).values_list('permission_id', flat=True)]
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class Permission(models.Model):
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namespace = models.CharField(max_length=64, verbose_name=_(u'namespace'))
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name = models.CharField(max_length=64, verbose_name=_(u'name'))
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label = models.CharField(max_length=64, verbose_name=_(u'label'))
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objects = PermissionManager()
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class Meta:
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ordering = ('namespace', 'label')
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unique_together = ('namespace', 'name')
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verbose_name = _(u'permission')
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verbose_name_plural = _(u'permissions')
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def __unicode__(self):
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return self.label
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class PermissionHolder(models.Model):
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permission = models.ForeignKey(Permission, verbose_name=_(u'permission'))
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holder_type = models.ForeignKey(ContentType,
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related_name='permission_holder',
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limit_choices_to = {'model__in': ('user', 'group', 'role')})
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holder_id = models.PositiveIntegerField()
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holder_object = generic.GenericForeignKey(ct_field='holder_type', fk_field='holder_id')
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class Meta:
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verbose_name = _(u'permission holder')
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verbose_name_plural = _(u'permission holders')
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def __unicode__(self):
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return unicode(self.holder_object)
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class Role(models.Model):
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name = models.CharField(max_length=64, unique=True)
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label = models.CharField(max_length=64, unique=True, verbose_name=_(u'label'))
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class Meta:
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ordering = ('label',)
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verbose_name = _(u'role')
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verbose_name_plural = _(u'roles')
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def add_member(self, member):
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role_member, created = RoleMember.objects.get_or_create(
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role=self,
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member_type = ContentType.objects.get_for_model(member),
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member_id=member.id)
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def __unicode__(self):
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return self.label
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@models.permalink
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def get_absolute_url(self):
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return ('role_list',)
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class RoleMember(models.Model):
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role = models.ForeignKey(Role, verbose_name=_(u'role'))
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member_type = models.ForeignKey(ContentType,
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related_name='role_member',
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limit_choices_to = {'model__in': ('user', 'group')})
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member_id = models.PositiveIntegerField()
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member_object = generic.GenericForeignKey(ct_field='member_type', fk_field='member_id')
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class Meta:
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#ordering = ('label',)
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verbose_name = _(u'role member')
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verbose_name_plural = _(u'role members')
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def __unicode__(self):
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return unicode(self.member_object)
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