django User model

django User model operation

this tutorial will guide us to know how to manipulate django User model.

Read User object derived from database

from django.contrib.auth.models import User
 
# Those two lines are different even if there is only one user 'admin' who registered before
 
auser = User.objects.get(username = 'admin')   # unique only one var
buser = User.objects.filter(username = 'admin')  # var type the same as " allusers " 
 
allusers = User.objects.all()

Now let's check out how it shows.

in python shell,

>>>allusers

[<User: admin>]

>>>auser

<User: admin>

>>>buser

[<user: admin>]

>>>allusers == buser

Flase

Now let's see how to write data for User

Creating users

The most direct way to create users is to use the included create_user() helper function:

>>> from django.contrib.auth.models import User
>>> user = User.objects.create_user('john', 'lennon@thebeatles.com', 'johnpassword')
 
# At this point, user is a User object that has already been saved
# to the database. You can continue to change its attributes
# if you want to change other fields.
>>> user.last_name = 'Lennon'
>>> user.save()

If you have the Django admin installed, you can also create users interactively.

 For more information about user authentication, user permissions, user groups, Please visit

 

https://docs.djangoproject.com/en/dev/topics/auth/default/#user-objects

authenticate (验证身份）

the operation downside will directly talk to database model

from django.contrib import auth
user = auth.authenticate(username='john', password='secret')
if user is not None:
    print "Correct!"
else:
    print "Invalid password."