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

巴特西

Python - Django - form 组件内置的正则校验器

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