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82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
from datetime import datetime
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from django.db import models
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.contenttypes.fields import GenericForeignKey
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from django.contrib.auth.models import Group
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from django.utils.translation import ugettext_lazy as _
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from authority.compat import user_model_label
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from authority.managers import PermissionManager
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class Permission(models.Model):
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"""
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A granular permission model, per-object permission in other words.
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This kind of permission is associated with a user/group and an object
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of any content type.
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"""
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codename = models.CharField(_("codename"), max_length=100)
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content_type = models.ForeignKey(
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ContentType, related_name="row_permissions", on_delete=models.CASCADE
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)
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object_id = models.PositiveIntegerField()
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content_object = GenericForeignKey("content_type", "object_id")
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user = models.ForeignKey(
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user_model_label,
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null=True,
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blank=True,
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related_name="granted_permissions",
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on_delete=models.CASCADE,
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)
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group = models.ForeignKey(Group, null=True, blank=True, on_delete=models.CASCADE)
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creator = models.ForeignKey(
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user_model_label,
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null=True,
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blank=True,
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related_name="created_permissions",
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on_delete=models.CASCADE,
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)
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approved = models.BooleanField(
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_("approved"),
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default=False,
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help_text=_(
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"Designates whether the permission has been approved and treated as active. "
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"Unselect this instead of deleting permissions."
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),
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)
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date_requested = models.DateTimeField(_("date requested"), default=datetime.now)
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date_approved = models.DateTimeField(_("date approved"), blank=True, null=True)
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objects = PermissionManager()
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def __unicode__(self):
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return self.codename
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class Meta:
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unique_together = ("codename", "object_id", "content_type", "user", "group")
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verbose_name = _("permission")
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verbose_name_plural = _("permissions")
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permissions = (
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("change_foreign_permissions", "Can change foreign permissions"),
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("delete_foreign_permissions", "Can delete foreign permissions"),
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("approve_permission_requests", "Can approve permission requests"),
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)
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def save(self, *args, **kwargs):
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# Make sure the approval date is always set
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if self.approved and not self.date_approved:
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self.date_approved = datetime.now()
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super(Permission, self).save(*args, **kwargs)
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def approve(self, creator):
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"""
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Approve granular permission request setting a Permission entry as
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approved=True for a specific action from an user on an object instance.
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"""
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self.approved = True
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self.creator = creator
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self.save()
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