Rest Framework: IV. authentication component

urls.py

url(r'^login/', views.Login.as_view()), url(r'^books/', views.Books.as_view()),

models.py

from django.db import models # Create your models here. class UserInfo(models.Model): name = models.CharField(max_length=32) #Write choice user_choice=((0,'Ordinary users'),(1,'Member'),(2,'Super user')) #Specify a choice to quickly retrieve text through numbers user_type=models.IntegerField(choices=user_choice,default=0) pwd = models.CharField(max_length=32) class UserToken(models.Model): token = models.CharField(max_length=64) user = models.OneToOneField(to=UserInfo) class Book(models.Model): nid = models.AutoField(primary_key=True) name = models.CharField(max_length=32) price = models.DecimalField(max_digits=5, decimal_places=2) publish_date = models.DateField() publish = models.ForeignKey(to='Publish', to_field='nid', on_delete=models.CASCADE) authors = models.ManyToManyField(to='Author') def __str__(self): return self.name class Author(models.Model): nid = models.AutoField(primary_key=True) name = models.CharField(max_length=32) age = models.IntegerField() author_detail = models.OneToOneField(to='AuthorDatail', to_field='nid', unique=True, on_delete=models.CASCADE) class AuthorDatail(models.Model): nid = models.AutoField(primary_key=True) telephone = models.BigIntegerField() birthday = models.DateField() addr = models.CharField(max_length=64) class Publish(models.Model): nid = models.AutoField(primary_key=True) name = models.CharField(max_length=32) city = models.CharField(max_length=32) email = models.EmailField() def __str__(self): return self.name def test(self): return self.email

Migrating databases

python3 manage makemigrations
python3 manage migrate

app01/MySerializer.py

from rest_framework import serializers from app01 import models class BookSerializer(serializers.ModelSerializer): class Meta: model = models.Book fields='__all__'

views.py

from django.shortcuts import render from django.http import JsonResponse from rest_framework.views import APIView from app01 import models import hashlib import time from django.core.exceptions import ObjectDoesNotExist from app01 import MySerializer # Create your views here. def get_token(name): #Generate an md5 object md5 = hashlib.md5() #Add value to, must be in bytes format #time.time() generates a timestamp type, converts it to a string, and encode s it to bytes md5.update(str(time.time()).encode('utf-8')) md5.update(name.encode('utf-8')) return md5.hexdigest() class Login(APIView): authentication_classes = [] def post(self, request, *args, **kwargs): response = {'status': 100, 'msg': 'Login successfully'} name = request.data.get('name') pwd = request.data.get('pwd') try: user = models.UserInfo.objects.get(name=name, pwd=pwd) #Pass the verification, log in successfully, and generate a random string (identity) token token = get_token(name) #Save to database #Update or create models.UserToken.objects.update_or_create(user=user, defaults={'token': token}) response['token'] = token except ObjectDoesNotExist as e: response['status'] = 101 response['msg'] = 'Wrong user name or password' except Exception as e: response['status'] = 102 #response['msg '] =' unknown error ' response['msg'] = str(e) return JsonResponse(response, safe=False) from rest_framework import exceptions class LoginAuth(): #Function name must be called this name, receive must have two parameters, and the second parameter is request object def authenticate(self, request): #Take the token from the request pair (or from other places) token = request.query_params.get('token') #Query in database ret = models.UserToken.objects.filter(token=token) if ret: #It can be found, indicating that the authentication is passed, and the return is empty return None #Otherwise, an exception will be reported raise exceptions.APIException('Authentication failed') from rest_framework.request import Request # class Books(APIView): # #Types in the list cannot be parenthesized # authentication_classes = [LoginAuth, ] # # def get(self, request, *args, **kwargs): #response = {'status': 100,' msg ': query succeeded'} # #You must log in to get data # #Take the token, take the database for verification, and log in or not # token = request.query_params.get('token') # ret = models.UserToken.objects.filter(token=token) # if ret: # #Authentication passed, login user # ret = models.Book.objects.all() # book_ser = MySerializer.BookSerializer(ret, many=True) # response['data'] = book_ser.data # else: # response['status'] = 101 #response['msg '] =' authentication failed ' # return JsonResponse(response, safe=False) #Same function as the Books class above, but more concise than the one above. class Books(APIView): #Types in the list cannot be parenthesized authentication_classes = [LoginAuth, ] def get(self, request, *args, **kwargs): response = {'status': 100, 'msg': 'query was successful'} ret = models.Book.objects.all() book_ser = MySerializer.BookSerializer(ret, many=True) response['data'] = book_ser.data return JsonResponse(response, safe=False)

Add data test to database:

Using Postman testing:

Function: log in to view the details of the book

Log in to the service using the user name and password in the database:

Use token login to verify the details of the query book

If the token verification is not successful, it will return:

II. Global and local use of authentication components

urls.py, models.py, invariant

Local use:

views.py

from app01.MyAuth import LoginAuth class Books(APIView): #Types in the list cannot be parenthesized #Local use of certified components authentication_classes = [LoginAuth, ] #Authentication component, local disable authentication \ classes = [] def get(self, request, *args, **kwargs): response = {'status': 100, 'msg': 'query was successful'} ret = models.Book.objects.all() book_ser = MySerializer.BookSerializer(ret, many=True) response['data'] = book_ser.data return JsonResponse(response, safe=False)

app01/MyAuth.py

from rest_framework import exceptions from app01 import models #Using dnf authentication to write a class class LoginAuth(): #Function name must be called this name, receive must have two parameters, and the second parameter is request object def authenticate(self, request): #Take the token from the request pair (or from other places) token = request.query_params.get('token') #Query in database ret = models.UserToken.objects.filter(token=token) if ret: #It can be found, indicating that the authentication is passed, and the return is empty return None #Otherwise, an exception will be reported raise exceptions.APIException('Authentication failed')

-Global use
- configure in setting:

REST_FRAMEWORK={ 'DEFAULT_AUTHENTICATION_CLASSES':['app01.MyAuth.LoginAuth',], }

-Locally disabled, in views.py:

III. establishment of authority

3 December 2019, 11:17 | Views: 2017