标签：erro pop pre go import model gif lang 返回 models
1.视图函数
from django.shortcuts import render, HttpResponse,redirect,reverse
from django import forms
from django.forms import widgets
import json
from django.core.exceptions import ValidationError
from loginapp import models
# Create your views here.
class Login_forms(forms.Form):
user = forms.CharField(max_length=10, min_length=3, label=‘用户名‘, required=True,
widget=widgets.TextInput(attrs={‘id‘: ‘user‘,‘class‘:‘col-md-6‘}),
error_messages={‘max_length‘:‘最大长度为10‘,‘min_length‘:‘最短长度为3‘,‘required‘:‘不能为空‘})
pwd = forms.CharField(max_length=20, min_length=3, label=‘密码‘, required=True,
widget=widgets.PasswordInput(attrs={‘id‘: ‘pwd‘,‘class‘:‘col-md-6‘}),
error_messages={‘max_length‘:‘最大长度为20‘,‘min_length‘:‘最短长度为3‘,‘required‘:‘不能为空‘})
pwd_rs = forms.CharField(max_length=20, min_length=3, label=‘确认密码‘, required=True,
widget=widgets.PasswordInput(attrs={‘id‘: "pwd2",‘class‘:‘col-md-6‘}),
error_messages={‘max_length‘: ‘最大长度为20‘, ‘min_length‘: ‘最短长度为3‘, ‘required‘: ‘不能为空‘})
email = forms.EmailField(label=‘邮箱‘, required=True,
widget=widgets.EmailInput(attrs={‘id‘: "email",‘class‘:‘col-md-6‘}),
error_messages={‘required‘:‘不能为空!‘,‘invalid‘: ‘不符合邮箱格式‘})
def clean(self):
pwd = self.cleaned_data.get(‘pwd‘)
pwd_rs = self.cleaned_data.get(‘pwd_rs‘)
if pwd == pwd_rs:
return self.cleaned_data
else:
raise ValidationError(‘两次密码不一致‘)
def clean_user(self):
user = self.cleaned_data.get(‘user‘)
user_pd = models.User.objects.filter(user=user).first()
if user_pd:
raise ValidationError(‘用户名已存在!‘)
else:
return user
def login(request):
if request.method == "GET":
forms = Login_forms()
if request.method == ‘POST‘:
msg_dic = json.loads(request.body.decode(‘utf-8‘))
# print(msg_dic)
forms = Login_forms(msg_dic)
if forms.is_valid():
forms.cleaned_data.pop(‘pwd_rs‘)
# print(forms.cleaned_data)
models.User.objects.create(**forms.cleaned_data)
return HttpResponse(json.dumps(‘s‘))
else:
# print(forms.cleaned_data, ‘不通过‘)
return HttpResponse(json.dumps(forms.errors))
return render(request, ‘login.html‘, locals())
2.模板层
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>登录</title>
{% load static %}
<script src={% static ‘jquery-3.3.1.js‘ %}></script>
<script src="/static/bootstrap-3.3.7-dist/js/bootstrap.js"></script>
<link rel="stylesheet" href="/static/bootstrap-3.3.7-dist/css/bootstrap.css">
</head>
<body>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<h2>用户注册</h2>
{% for form in forms %}
<p>{{ form.label }}:</p>
<p>{{ form }}<p id={{ form.name }}sp> </p></p>
{% endfor %}
<p id="res" class="col-md-8"> </p>
<button type="button" class="btn btn-success col-md-6" id="btn">注册</button>
</div>
</div>
</body>
<script>
$(‘#btn‘).click(function () {
var msg_dic = {
‘user‘: $(‘#user‘).val(),
‘pwd‘: $(‘#pwd‘).val(),
‘pwd_rs‘: $(‘#pwd2‘).val(),
‘email‘: $(‘#email‘).val()
};
msg_dic = JSON.stringify(msg_dic);
$.ajax({
url: ‘/login/‘,
type: ‘post‘,
contentType: ‘application/json‘,
data: msg_dic,
dataType: ‘json‘,
success: function (data) {
{#console.log(data);#}
if (data == ‘s‘) {
{#console.log(typeof data);#}
location.href = ‘/cg/‘
} else {
if (data.user) {
$(‘#usersp‘).text(data.user);
} else {
$(‘#usersp‘).html(‘ ‘);
}
if (data.pwd) {
$(‘#pwdsp‘).text(data.pwd);
} else {
$(‘#pwdsp‘).html(‘ ‘);
}
if (data.pwd_rs) {
$(‘#pwd_rssp‘).text(data.pwd_rs);
} else {
$(‘#pwd_rssp‘).html(‘ ‘);
}
if (data.email) {
$(‘#emailsp‘).text(data.email);
} else {
$(‘#emailsp‘).html(‘ ‘);
}
if (data.__all__) {
$(‘#res‘).text(data.__all__);
}else{
$(‘#res‘).html(‘ ‘);
}
}
}
})
})
</script>
</html>3.基础知识
字段参数
//字段参数
max_length=最大值
min_length=最小值
label=标签label中字符
required=判断是否可以为空 True不能为空 False可以为空
widget = 输入框的属性 widget=widgets.TextInput(attrs={‘id‘: ‘user‘, ‘class‘: ‘col-md-6‘})
error_messages= 错误信息 error_messages={‘max_length‘: ‘最大长度为10‘, ‘min_length‘: ‘最短长度为3‘, ‘required‘: ‘不能为空‘})局部钩子校验
//定义一个函数,名字叫:clean_字段名字,内部,取出该字段,进行校验,如果通过,将该字段返回,如果失败,抛异常(ValidationError)
def clean_user(self):
user = self.cleaned_data.get(‘user‘)
user_pd = models.User.objects.filter(user=user).first()
if user_pd:
raise ValidationError(‘用户名已存在!‘)
else:
return user全局钩子校验
//程序能走到该函数,前面校验已经通过了,所以可以从cleaned_data中取出密码和确认密码
def clean(self):
pwd = self.cleaned_data.get(‘pwd‘)
pwd_rs = self.cleaned_data.get(‘pwd_rs‘)
if pwd == pwd_rs:
return self.cleaned_data
else:
raise ValidationError(‘两次密码不一致‘)标签：erro pop pre go import model gif lang 返回 models
原文地址：https://www.cnblogs.com/jianhaozhou/p/9997875.html
