11 django form表单校验

1 编写form校验（form同model中字段命名一致）

from django import forms


class UserForm(forms.Form):
    username = forms.CharField(min_length=4,
                               max_length=11,
                               required=True,
                               error_messages={'required': '用户名不能为空'})
    password = forms.CharField(min_length=4,
                               max_length=50,
                               required=True,
                               error_messages={'required': '密码不能为空'})

2 view中采用form检验

import hashlib
import json

from django.core import serializers
from django.http import JsonResponse

# Create your views here.
from django.views import View
from user.models import User
from utils.mytoken import make_token, login_check
from user.form import UserForm

class Login(View):
    def post(self, request):
        print('post login')
        body = json.loads(request.body)  # 转字典
        # form 校验
        form = UserForm(body)
        if form.is_valid():
            username = body['username']
            password = body['password']
            users = User.objects.filter(username=username)  # 返回数组
            if users.count() == 0:
                result = {'code': -1, 'msg': u'用户名或密码错误啦！'}
                return JsonResponse(result)
            user = users[0]
            m = hashlib.md5()
            m.update(password.encode())
            # 密码比对
            if m.hexdigest() != user.password:
                result = {'code': -1, 'msg': u'用户名或密码错误！'}
                return JsonResponse(result)

            # 生成 token
            token = make_token(username)
            # encode的作用是将unicode编码的字符串编码成二进制数据
            # decode的作用是将二进制数据解码成unicode编码
            result = {'code': 1, 'data': {'token': token}, 'msg': u'登录成功！'}
            return JsonResponse(result)
        else:
            print(form.errors)
            result = {'code': -1, 'msg': '参数错误'}
            return JsonResponse(result)

3 参考

https://blog.csdn.net/qq_34755081/article/details/82822405