Python - Django - form 组件内置的正则校验器
app01/models.py：
from django.db import models
class UserInfo(models.Model):
username = models.CharField(max_length=16)
password = models.CharField(max_length=16)
mobile = models.CharField(max_length=11)
创建了一个 UserInfo 表
reg2.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form action="/reg2/" method="post" novalidate>
{% csrf_token %}
<div class="form-group {% if form_obj.username.errors.0 %}has-error{% endif %}">
{{ form_obj.username.label }}
{{ form_obj.username }}
<span class="help-block">{{ form_obj.username.errors.0 }}</span>
</div>
<div class="form-group {% if form_obj.password.errors.0 %}has-error{% endif %}">
{{ form_obj.password.label }}
{{ form_obj.password }}
<span class="help-block">{{ form_obj.password.errors.0 }}</span>
</div>
<div class="form-group {% if form_obj.mobile.errors.0 %}has-error{% endif %}">
{{ form_obj.mobile.label }}
{{ form_obj.mobile }}
<span class="help-block">{{ form_obj.mobile.errors.0 }}</span>
</div>
<p><input type="submit" class="btn btn-default"></p>
</form>
</div>
</div>
</div>
</body>
</html>
views.py：
from django.shortcuts import render, HttpResponse
from app01 import models
from django import forms
from django.forms import widgets
from django.core.validators import RegexValidator # 导入正则匹配的组件
class RegForm(forms.Form):
username = forms.CharField(
min_length=5,
label="用户名",
error_messages={
"min_length": "用户名不能小于5位！",
"required": "该字段不能为空"
},
widget=widgets.TextInput(attrs={"class": "form-control"})
)
password = forms.CharField(
min_length=6,
label="密码",
error_messages={
"min_length": "密码不能少于6位！",
"required": "该字段不能为空"
},
widget=widgets.PasswordInput(attrs={"class": "form-control"}, render_value=True)
)
mobile = forms.CharField(
label="手机号",
# 自定义正则匹配规则
validators=[
RegexValidator(r'^[0-9]+$', "手机号必须是数字"), # 判断手机号是否为数字
RegexValidator(r'^1[3-9][0-9]{9}$', "手机格式有误") # 判断手机号是否为 1 和 3-9 开头的十一位数
],
error_messages={
"required": "该字段不能为空",
},
widget=widgets.TextInput(attrs={"class": "form-control"})
)
def reg2(request):
form_obj = RegForm() # GET 请求
if request.method == "POST":
form_obj = RegForm(request.POST)
# 让 form 来帮我们进行校验
if form_obj.is_valid():
# 如果通过校验
# 所有经过校验的数据都保存在 form_obj.cleaned_data
print(form_obj.cleaned_data)
models.UserInfo.objects.create(**form_obj.cleaned_data)
return HttpResponse("注册成功")
return render(request, "reg2.html", {"form_obj": form_obj})
访问，http://127.0.0.1:8000/reg2/
填写 13 位的手机号，点击 “提交”
填写含有非数字的话
填写符合条件的手机号
看一下数据库
