django在模型中创建用户方法

Question

Hi I'm new to django and python. I want to extend django User model and add a create_user method in a model, then I call this create_user method from view. However, I got an error msg.

My model:

from django.db import models
from django.contrib.auth.models import User

class Basic(models.Model):
    user = models.OneToOneField(User)
    gender = models.CharField(max_length = 10)

    def create_ck_user(acc_type, fb_id,fb_token):
        # "Create a user and insert into auth_user table"
        user = User.objects.create_user(acc_type,fb_id,fb_token)
        user.save()

class External(models.Model):
    user = models.OneToOneField(Basic)
    external_id = models.IntegerField()
    locale = models.CharField(max_length = 40)
    token = models.CharField(max_length = 250)

and in view, I did sth like this:

Basic.create_ck_user('acc_type' = 'fb', 'fb_id' = fb_id, 'fb_token' = fb_token)

error shows that:

keyword can't be an expression (views.py, Basic.objects.create_ck_user('acc_type' = 'fb', 'fb_id' = fb_id, 'fb_token' = fb_token))

Edit: After add @classmehtod, and change view.py to:

...    
if (request.method == 'POST'):
            acc_type = request.POST.get('acc_type')
            fb_id = request.POST.get('fb_id')
            fb_token = request.POST.get('fb_token')

            Basic.create_ck_user(acc_type,fb_id,fb_token)
...

An error msg shows:

create_ck_user() takes exactly 3 arguments (4 given)

checked error details, it includes "request" variable though that i just pass 3 variables: acc_type , fb_id and fb_token .

Any ideas?

Answer 1

Try

Basic.create_ck_user('fb', fb_id, fb_token)

You don't assign to strings when you call a function/method. You assign to variables. But since you are using positional arguments in your function definition then you don't even need them.

Assigning to a string will never work anyway... strings are immutable objects.

Also, you want this method to be a class method. Otherwise you would need to create an instance of User before calling it.

# inside class definition  
    @classmethod
    def create_ck_user(cls, acc_type, fb_id,fb_token):
        # "Create a user and insert into auth_user table"
        user = cls.objects.create_user(acc_type,fb_id,fb_token)
        user.save()

Answer 2

Just look here: https://docs.djangoproject.com/en/dev/topics/auth/default/#creating-users

You can find a lot of answers just looking at the documentation.