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'''
Created on Apr 5, 2011
@author: leifj
'''
from django.db import models
from django.db.models.fields import CharField, URLField, DateTimeField, IntegerField
from django.contrib.auth.models import Group
from django.db.models.fields.related import OneToOneField
from django.dispatch.dispatcher import Signal
from django_co_connector.settings import CO_ATTRIBUTES
import logging
class GroupConnector(models.Model):
attribute = CharField(max_length=1024)
value = CharField(max_length=1024)
activity_url = URLField(blank=True,null=True)
membership_url = URLField(blank=True,null=True)
ttl = IntegerField(blank=True,null=True)
group = OneToOneField(Group,related_name='connector')
modify_time = DateTimeField(auto_now=True)
create_time = DateTimeField(auto_now_add=True)
def __unicode__(self):
return "%s=%s for %s" % (self.attribute,self.value,self.group.name)
class Meta:
unique_together = ('attribute','value')
def fetch_updates(self):
return ([],[])
def fetch_all(self):
return []
def fetch_meta(self):
return {}
def update(self):
# pull JSON to get display and ttl (?)
(added,removed) = self.fetch_updates()
for user in added:
if not self.group in user.groups:
add_member.send(sender=self.group,user=user)
user.groups.append(self.group)
for user in removed:
if self.group in user.groups:
remove_member.send(sender=self.group,user=user)
user.groups.remove(self.group)
add_member = Signal(providing_args=['user'])
remove_member = Signal(providing_args=['user'])
def co_import_from_request(request):
for attribute in CO_ATTRIBUTES:
logging.debug(attribute)
values = request.META.get(attribute)
if values and values != "(null)":
logging.debug("%s: %s" % (attribute,values))
co_import_av(request.user,attribute,values.split(';'))
def co_import_av(user,attribute,values):
for value in values:
gco = GroupConnector.objects.filter(attribute=attribute,value=value)
if not gco:
group,created = Group.objects.get_or_create(name=value)
gco = GroupConnector.objects.create(attribute=attribute,value=value,group=group)
meta = gco.fetch_meta()
changed = False
for attr in ('name','ttl','activity_url','membership_url'):
if meta.has_key(attr):
setattr(gco,attr,meta.get(attr))
changed = True
#members = gco.fetch_all()
#for user in members:
# if not gco.group in user.groups:
# add_member.send(sender=gco.group,user=user)
# user.groups.apppend(gco.group)
# user.save()
if changed:
gco.save()
gco.group.save()
for gco in GroupConnector.objects.filter(attribute=attribute):
if not gco.value in values:
if gco.group in user.groups.all():
remove_member.send(sender=gco.group,user=user)
user.groups.remove(gco.group)
user.save()
else:
if not gco.group in user.groups.all():
add_member.send(sender=gco.group,user=user)
user.groups.apppend(gco.group)
user.save()
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