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# Copyright 2008 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
App Engine compatible models for the Django authentication framework.
"""
from django.core import mail
from django.core.exceptions import ImproperlyConfigured
from django.db import models
from django.utils.encoding import smart_str
import urllib
from django.db.models.manager import EmptyManager
from google.appengine.api import users
from google.appengine.ext import db
from appengine_django.models import BaseModel
class User(BaseModel):
"""A model with the same attributes and methods as a Django user model.
The model has two additions. The first addition is a 'user' attribute which
references a App Engine user. The second is the 'get_djangouser_for_user'
classmethod that should be used to retrieve a DjangoUser instance from a App
Engine user object.
"""
user = db.UserProperty(required=True)
username = db.StringProperty(required=True)
first_name = db.StringProperty()
last_name = db.StringProperty()
email = db.EmailProperty()
password = db.StringProperty()
is_staff = db.BooleanProperty(default=False, required=True)
is_active = db.BooleanProperty(default=True, required=True)
is_superuser = db.BooleanProperty(default=False, required=True)
last_login = db.DateTimeProperty(auto_now_add=True, required=True)
date_joined = db.DateTimeProperty(auto_now_add=True, required=True)
groups = EmptyManager()
user_permissions = EmptyManager()
def __unicode__(self):
return self.username
def __str__(self):
return unicode(self).encode('utf-8')
@classmethod
def get_djangouser_for_user(cls, user):
query = cls.all().filter("user =", user)
if query.count() == 0:
django_user = cls(user=user, email=user.email(), username=user.nickname())
django_user.save()
else:
django_user = query.get()
return django_user
def set_password(self, raw_password):
raise NotImplementedError
def check_password(self, raw_password):
raise NotImplementedError
def set_unusable_password(self):
raise NotImplementedError
def has_usable_password(self):
raise NotImplementedError
def get_group_permissions(self):
return self.user_permissions
def get_all_permissions(self):
return self.user_permissions
def has_perm(self, perm):
return False
def has_perms(self, perm_list):
return False
def has_module_perms(self, module):
return False
def get_and_delete_messages(self):
"""Gets and deletes messages for this user"""
msgs = []
for msg in self.message_set:
msgs.append(msg)
msg.delete()
return msgs
def is_anonymous(self):
"""Always return False"""
return False
def is_authenticated(self):
"""Always return True"""
return True
def get_absolute_url(self):
return "/users/%s/" % urllib.quote(smart_str(self.username))
def get_full_name(self):
full_name = u'%s %s' % (self.first_name, self.last_name)
return full_name.strip()
def email_user(self, subject, message, from_email):
"""Sends an email to this user.
According to the App Engine email API the from_email must be the
email address of a registered administrator for the application.
"""
mail.send_mail(subject,
message,
from_email,
[self.email])
def get_profile(self):
"""
Returns site-specific profile for this user. Raises
SiteProfileNotAvailable if this site does not allow profiles.
When using the App Engine authentication framework, users are created
automatically.
"""
from django.contrib.auth.models import SiteProfileNotAvailable
if not hasattr(self, '_profile_cache'):
from django.conf import settings
if not hasattr(settings, "AUTH_PROFILE_MODULE"):
raise SiteProfileNotAvailable
try:
app_label, model_name = settings.AUTH_PROFILE_MODULE.split('.')
model = models.get_model(app_label, model_name)
self._profile_cache = model.all().filter("user =", self).get()
if not self._profile_cache:
raise model.DoesNotExist
except (ImportError, ImproperlyConfigured):
raise SiteProfileNotAvailable
return self._profile_cache
class Group(BaseModel):
"""Group model not fully implemented yet."""
# TODO: Implement this model, requires contenttypes
name = db.StringProperty()
permissions = EmptyManager()
class Message(BaseModel):
"""User message model"""
user = db.ReferenceProperty(User)
message = db.TextProperty()
class Permission(BaseModel):
"""Permission model not fully implemented yet."""
# TODO: Implement this model, requires contenttypes
name = db.StringProperty()
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