Re: Extend user model: class inheritance or OneToOneField?
Hi 2012/7/14 Melvyn Sopacua > > Important question: Why? > > I need to store more information about the user, like birthday, language preference etc Moreover I need to have two different users and store different information for each user type. In a near future I will need to integrate auth and facebook login as well (using django-oauth-plus) Depends on the why. A site (as in a project) only allows one user > profile, so applications calling user.get_user_profile() cannot rely on > their version of the profile being returned. That's one important reason > not to follow the documentation recommendation. > Also, when subclassing you shall not set objects to UserManager. This > will make several queries fail in unexpected ways. Instead, set objects > to the default manager and provide a separate property for the user > manager. > Can you please explain better the last part? > When you additionally need to add more information to Group and thus > subclass it, then things get complex real fast. > Having tried this exercise I've now decided to write my own auth package > all together. > There are any resources (links, books, etc..) where I can have a look? Thanks (and thanks Ernesto as well for his answer) Alex -- Alessandro De Noia -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Extend user model: class inheritance or OneToOneField?
On 14-7-2012 0:18, sdonk wrote: > I'm starting a new project and for the first time I need to extend the User > model. Important question: Why? > I read the documentation and I googled a lot to try to figure out what is > the best approach but I got confused. > > What's the the best approach? Depends on the why. A site (as in a project) only allows one user profile, so applications calling user.get_user_profile() cannot rely on their version of the profile being returned. That's one important reason not to follow the documentation recommendation. Also, when subclassing you shall not set objects to UserManager. This will make several queries fail in unexpected ways. Instead, set objects to the default manager and provide a separate property for the user manager. When you additionally need to add more information to Group and thus subclass it, then things get complex real fast. Having tried this exercise I've now decided to write my own auth package all together. -- Melvyn Sopacua -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Extend user model: class inheritance or OneToOneField?
Hi! I prefer using OnetoOne with a pre_delete signal to remove user from a pirncipal object instance: from django.contrib.auth.models import User from django.db.models.signals import pre_delete from django.dispatch import receiver class Customer(User): user = models.OneToOneField(User) @receiver(pre_delete, sender=Customer) def delete_user_customer(sender, instance, **kwargs): user = User.objects.filter(pk=instance.user.id) if user: user.delete() class Seller(User): user = models.OneToOneField(User) @receiver(pre_delete, sender=Seller) def delete_user_seller(sender, instance, **kwargs): user = User.objects.filter(pk=instance.user.id) if user: user.delete() 2012/7/13 sdonk > Hi, > I'm starting a new project and for the first time I need to extend the > User model. > I read the documentation and I googled a lot to try to figure out what is > the best approach but I got confused. > > What's the the best approach? > > Class inheritance: > > from django.contrib.gis.db import models > from django.contrib.auth.models import User, UserManager > > class myUser(User): > birthday = models.DateField(null=True, blank=True) > address = models.CharField(max_length=255, null=True, blank=True) > > objects = UserManager() > > Or OneToOneField (as doc suggests) > > > from django.contrib.gis.db import models > from django.contrib.auth.models import User > from django.db.models.signals import post_save > > class myUser(User): > user = models.OneToOneField(User) > birthday = models.DateField(null=True, blank=True) > address = models.CharField(max_length=255, null=True, blank=True) > > def __unicode__(self): > return u'%s' % self.user > > def create_user_profile(sender, instance, created, **kwargs): > if created: > myUser.objects.create(user=instance) > > post_save.connect(create_user_profile, sender=User) > > Thanks, > > Alex > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/django-users/-/KtEPwiHoWbUJ. > To post to this group, send email to django-users@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Extend user model: class inheritance or OneToOneField?
Hi, I'm starting a new project and for the first time I need to extend the User model. I read the documentation and I googled a lot to try to figure out what is the best approach but I got confused. What's the the best approach? Class inheritance: from django.contrib.gis.db import models from django.contrib.auth.models import User, UserManager class myUser(User): birthday = models.DateField(null=True, blank=True) address = models.CharField(max_length=255, null=True, blank=True) objects = UserManager() Or OneToOneField (as doc suggests) from django.contrib.gis.db import models from django.contrib.auth.models import User from django.db.models.signals import post_save class myUser(User): user = models.OneToOneField(User) birthday = models.DateField(null=True, blank=True) address = models.CharField(max_length=255, null=True, blank=True) def __unicode__(self): return u'%s' % self.user def create_user_profile(sender, instance, created, **kwargs): if created: myUser.objects.create(user=instance) post_save.connect(create_user_profile, sender=User) Thanks, Alex -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/KtEPwiHoWbUJ. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
