對(duì)Django中內(nèi)置的User模型實(shí)例詳解

from django.http import HttpResponse
from django.contrib.auth.models import User

def index(request):
  user = User.objects.create_user(username='xujin',email='qq@qq.com',password='111111')
  return HttpResponse('success')

def index(request):
  # user = User.objects.create_user(username='xujin',email='qq@qq.com',password='111111')
  user = User.objects.get(username='xujin')
  user.last_name = 'aaa'
  user.save() #更改完數(shù)據(jù)之后一定要記得保存
  return HttpResponse('success')

def index(request):
  # user = User.objects.create_user(username='xujin',email='qq@qq.com',password='111111')
  user = User.objects.get(username='xujin')
  # user.last_name = 'aaa'
  # user.save() #更改完數(shù)據(jù)之后一定要記得保存
  # user.password = '222222' # 這樣修改是錯(cuò)誤的，在數(shù)據(jù)庫中會(huì)明文顯示，不會(huì)被加密處理
  user.set_password('222222') # 這個(gè)方法設(shè)置的密碼才會(huì)經(jīng)過加密處理然后存放到數(shù)據(jù)庫中去
  user.save()
  return HttpResponse('success')

def index(request):
  user = User.objects.create_superuser(username='xujin1',email='QQ@qq.com',password='111111')
  return HttpResponse('success')

python manage.py createsuperuser

from django.contrib.auth import authenticate

def index(request):
  username = 'xujin'
  password = '222222'
  user = authenticate(request,username=username,password=password) # 驗(yàn)證成功之后就會(huì)返回這個(gè)user對(duì)象
  if user:
    print('登錄成功：%s' % user.username)
  else:
    print('用戶名或密碼錯(cuò)誤!')
  return HttpResponse('success')

from django.contrib.auth.models import User

class Person(User):
  class Meta:
    proxy = True # 表明這是一個(gè)代理模型

  @classmethod
  def get_user_number(cls):
    # 獲取user的個(gè)數(shù)
    return cls.objects.all().count()

from .models import Person

def proxyView(request):
  user_number = Person.get_user_number()
  print(user_number)
    
  # 因?yàn)槲覀兪褂昧舜砟Ｐ停敲匆韵聝煞N寫法是等價(jià)的  # User.objects.all()
  # Person.objects.all() 
  
  return HttpResponse('success')

class Person(User):
  telephone = models.CharField(max_length=11)

  class Meta:
    proxy = True # 表明這是一個(gè)代理模型

  @classmethod
  def get_user_number(cls):
    # 獲取user的個(gè)數(shù)
    return cls.objects.all().count()

ERRORS:
?: (models.E017) Proxy model 'Person' contains model fields.

class UserExtension(models.Model):
  # 定義一個(gè)一對(duì)一的外鍵
  user = models.OneToOneField(User,on_delete=models.CASCADE,related_name='extension')
  telephone = models.CharField(max_length=11)
  school = models.CharField(max_length=100)

from django.dispatch import receiver
from django.db.models.signals import post_save
# 這是一個(gè)信號(hào)函數(shù)，即每創(chuàng)建一個(gè)User對(duì)象時(shí)，就會(huì)新建一個(gè)userextionsion進(jìn)行綁定，使用了receiver這個(gè)裝飾器
@receiver(post_save,sender=User)
def handler_user_extension(sender,instance,created,**kwargs):
  if created: # 如果是第一次創(chuàng)建user對(duì)象，就創(chuàng)建一個(gè)userextension對(duì)象進(jìn)行綁定
    UserExtension.objects.create(user=instance)
  else: # 如果是修改user對(duì)象，那么也要將extension進(jìn)行保存
    instance.extension.save()

def oneView(request):
  user = User.objects.create_user(username='aaaaaa',email='QQ@qq.com',password='111111')
  return HttpResponse('一對(duì)一擴(kuò)展User')

def my_authenticate(telephone,password):
  user = User.objects.filter(extension__telephone=telephone).first()
  if user:
    is_correct = user.check_password(password)
    if is_correct:
      return user
    else:
      print('密碼錯(cuò)誤！')
      return None
  else:
    print('沒有找到此用戶')
    return None

def oneView(request):
  # 創(chuàng)建一條測(cè)試數(shù)據(jù)
  user = User.objects.create_user(username='bbb',email='QQ@qq.com',password='111111')
  user.extension.telephone = '18888888888'
  user.save()
  return HttpResponse('一對(duì)一擴(kuò)展User')

def oneView(request):
  # 創(chuàng)建一條測(cè)試數(shù)據(jù)
  # user = User.objects.create_user(username='bbb',email='QQ@qq.com',password='111111')
  # user.extension.telephone = '18888888888'
  # user.save()
  telephone = '18888888888'
  password = '111111'
  user = my_authenticate(telephone,password)
  if user:
    print('登錄成功')
  else:
    print('登錄失敗')
  return HttpResponse('一對(duì)一擴(kuò)展User')

from django.contrib.auth.models import AbstractUser,BaseUserManager

# 自定義管理工具
class UserManage(BaseUserManager):
  # _表示是受保護(hù)的，只能在這個(gè)類中可以調(diào)用
  def _create_user(self,telephone,username,password,**kwargs):
    if not telephone:
      raise ValueError('必須要傳遞手機(jī)號(hào)')
    if not password:
      raise ValueError('必須要輸入密碼')
    user = self.model(telephone=telephone,username=username,**kwargs)
    user.set_password(password)
    user.save()
    return user

 # 創(chuàng)建普通用戶
  def create_user(self,telephone,username,password,**kwargs):
    kwargs['is_superuser'] = False
    return self._create_user(telephone=telephone,username=username,password=password,**kwargs)

  # 創(chuàng)建超級(jí)用戶
  def create_superuser(self,telephone,username,password,**kwargs):
    kwargs['is_superuser'] = True
    return self._create_user(telephone=telephone, username=username, password=password, **kwargs)


class User(AbstractUser):
  telephone = models.CharField(max_length=11,unique=True)
  school = models.CharField(max_length=100)

  # 我們?cè)谑褂胊uthenticate的時(shí)候，默認(rèn)傳入的就好似username和password字段
  # 現(xiàn)在我們?cè)O(shè)置了這個(gè)屬性的值，那么再使用authenticate的時(shí)候，就會(huì)使用我們?cè)O(shè)定的字段
  USERNAME_FIELD = 'telephone'
  objects = UserManage()

AUTH_USER_MODEL = 'front.User'

from .models import User

def inherit_view(request):
  telephone = '18888888888'
  password = '111111'
  username = 'xujin'
  user = User.objects.create_user(telephone=telephone,password=password,username=username)
  print(user.username)
  return HttpResponse('success')

def inherit_view(request):
  telephone = '18888888888'
  password = '111111'
  username = 'xujin'
  # user = User.objects.create_user(telephone=telephone,password=password,username=username)
  # print(user.username)

  user = authenticate(request,username=telephone,password=password)
  if user:
    print('登錄成功')
    print(user.username)
  else:
    print('驗(yàn)證失敗')
  return HttpResponse('success')