python3 user registration (based on django)

1. The front end portion (the introduction and jquery bootstrap)

<div class="container">
        <div class="col-md-8 col-md-offset-2">
                {% for item in form %}
                    <div class="form-group">
                        <lable>{{ item.label }}</lable>
                        {{ item }}
                        <span class="error pull-right"></span>
                    </div>
                {% endfor %}
                <input type="submit" class="btn btn-primary reg_btn" value="提交">
        </div>
        </div>
    <script>
        $('.reg_btn').click(function () {
           $.ajax({
            url:'',
            type:"post",
            dataType:"json",
            data:{
                user:$('#id_user').val(),
                pwd:$('#id_pwd').h ()
                r_pwd:$('#id_r_pwd').val(),
                email:$('#id_email').val(),
                csrfmiddlewaretoken:$("[name='csrfmiddlewaretoken']").val(),
            },
            success:function (res) {
                if(res.user){
                    location.href='/login/'
                }else{
                     $('.error').html('');
                 $(' .Form-Group ' ) .removeClass ( ' has-error ' );
                  // for traversing corresponding information displayed on the page 
                 $ .each (res.err, function (I, J) {
                     / * * IF (I == ' __all __ ') { 
                        $ (' # id_r_p ') Next () HTML (J [0]) CSS (...' Color ',' Red has-error ')') parent (). addClass (.. '; 
                    } the else { 
                        .. $ ( '# ID _' + I) .next () HTML (J [0]) CSS ( 'Color', 'Red') parent (). addClass ( 'has-error');.. 

                    } * * / 
                    // display an error message is generated in the span's 
                     $ ( '#id_'+i).next().html(j[html(j[0]).css('color','red').parent().addClass('has-error');
                 });
                }
             }
        });

    });
    </script>

 

2. Background python

  2.1 pairs django user table extension assembly field

  (1) add a new field in the user table of the models

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

# Create your models here.
class user_info(AbstractUser):
    tel=models.CharField(max_length=32)

   (2) change user authentication table configuration information setting component in

AUTH_USER_MODEL='app01.user_info'

      修改之后需重新迁移数据库，如果无需添加新字段可省去上述步骤，直接使用django默认提供的auth_user表

 

    2.2  业务代码

from django.http import JsonResponse
from django import forms
from app01.models import user_info
from django.core.exceptions import ValidationError
import re
from django.forms import widgets

#注册视图函数
def register(request):
    if request.method=='GET':
        form=UserForm()
        return render(request,'register.html',locals())
    elif request.method=="POST":
        res={"user":None,'err':""}
        form=UserForm(request.POST)
        #验证用户信息
        if form.is_valid():
            res['user']=form.cleaned_data.get('user')
            user=form.cleaned_data.get('user')
            pwd=form.cleaned_data.get('pwd')
            email=form.cleaned_data.get('email')
            user_info.objects.create_user(username=user,password=pwd,email=email)
        else:
            res['err']=form.errors
        return JsonResponse(res)

#创建验证规则对象
class UserForm(forms.Form):
    user=forms.CharField(max_length=32,label='用户名')
    #widget = widgets.PasswordInput()前端密码密文显示
    pwd=forms.CharField(max_length=32,label='密码',widget=widgets.PasswordInput())
    r_pwd=forms.CharField(max_length=32,label='确认密码',widget=widgets.PasswordInput())
    email=forms.EmailField(max_length=32,label='邮箱')
    #使页面渲染时增加需要的属性
    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        for filed in self.fields.values():
            filed.widget.attrs.update({'class':"form-control"})
    #设置钩子，对相应的验证框添加新的验证规则（不一定会被执行）
    def clean_user(self):
        val=self.cleaned_data.get('user')
        user=user_info.objects.filter(username=val).first()
        if user:
            raise ValidationError('用户已存在')
        else:
            return val
    def clean_pwd(self):
        val = self.cleaned_data.get('pwd')
        if val.isdigit():
            raise ValidationError('密码不能为纯数字')
        else:
            return val
    def clean_email(self):
        val=self.cleaned_data.get('email')
        if re.search('\[email protected]$',val):
            return val
        else:
            raise ValidationError('必须为163邮箱')

    # 全局钩子，此方法一定会被执行
    def clean(self):
        pwd=self.cleaned_data.get('pwd')
        r_pwd=self.cleaned_data.get('r_pwd')
        if pwd and r_pwd and pwd!=r_pwd:
            # raise ValidationError('密码不一致')
            self.add_error('r_pwd',ValidationError('两次密码不一致'))
        else:
            return self.cleaned_data