forms组件
一、app01.models.py
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from django.db import modelsclass UserInfo(models.Model): nid = models.BigAutoField(primary_key=True) name = models.CharField(verbose_name=‘用户名‘, max_length=32, unique=True) pwd = models.CharField(verbose_name=‘密码‘, max_length=64) email = models.EmailField(verbose_name=‘邮箱‘, unique=True) tel = models.CharField(verbose_name=‘手机‘) avatar = models.ImageField(verbose_name=‘头像‘) create_time = models.DateTimeField(verbose_name=‘创建时间‘, auto_now_add=True) |
二、app01.myforms.py
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from django import formsfrom django.forms import widgetsfrom app01.models import UserInfofrom django.core.exceptions import ValidationErrorclass RegisterForm(forms.Form): name=forms.CharField( min_length=6, max_length=32, label="用户名", error_messages={ "required":"用户名不能为空", "min_length":"用户名长度不能小于6个字符", "max_length":"用户名长度不能大于32个字符"}, widget=widgets.TextInput(attrs={"class":"form-control"}) ) pwd=forms.CharField( min_length=6, max_length=32, label="密码", error_messages={‘required‘: ‘密码不能为空.‘}, widget=widgets.PasswordInput(attrs={"class":"form-control"}) ) r_pwd=forms.CharField( min_length=6, max_length=32, label="确认密码", error_messages={"required":"密码不能为空"}, widget=widgets.TextInput(attrs={"class":"form-control"}) ) email=forms.EmailField( label="邮箱", error_messages={"required":"邮箱不能为空","invalid":"格式错误"}, widget=widgets.TextInput(attrs={"class":"form-control"}) ) tel=forms.CharField( label="手机号", widget=widgets.TextInput(attrs={"class":"form-control"}) ) # 局部钩子 def clean_name(self): val=self.cleaned_data.get("name") ret=UserInfo.objects.filter(name=val) if not ret: return val else: raise ValidationError("该用户已注册!") def clean_email(self): val=self.cleaned_data.get("email") ret=UserInfo.objects.filter(email=val) if not ret: return val else: raise ValidationError("该邮箱已注册!") def clean_tel(self): val=self.cleaned_data.get("tel") if len(val)==11: return val else: raise ValidationError("手机号格式错误") # 全局钩子 def clean(self): pwd=self.cleaned_data.get(‘pwd‘) r_pwd=self.cleaned_data.get(‘r_pwd‘) if pwd and r_pwd: if pwd==r_pwd: return self.cleaned_data else: # raise ValidationError(‘两次密码不一致‘) # 加在全局的错误里面 form.errors.get("__all__") self.add_error("r_pwd", ValidationError(‘两次密码不一致‘)) #加在r_pwd的错误里 else: return self.cleaned_data |
三、app01.views.py
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from django.shortcuts import render,HttpResponsefrom app01.myforms import *def reg(request): if request.method=="POST": form=RegisterForm(request.POST) # form表单的name属性值应该与forms组件字段名称一致 if form.is_valid(): # 验证成功做什么 form.cleaned_data.pop(‘r_pwd‘) user_info = form.cleaned_data UserInfo.objects.create(**user_info) request.session[‘user_info‘] = user_info return redirect(‘/‘) else: return render(request,"reg.html",locals()) form=RegisterForm() return render(request,"reg.html",locals())‘‘‘form=UserForm({"name":"bubu","email":"123@qq.com","xxxx":"123123123"}) :xxxx字段不会验证,只验证UserForm类里面有的字段form.is_valid() :返回布尔值form.cleaned_data :所有干净的字段以及对应的值{"name":"bubu","email":"123@qq.com"}form.errors :ErrorDict : {"校验错误的字段":["错误信息",]}form.errors.get("name") :ErrorList ["错误信息",]form.errors.get("name")[0] :取出第一个错误信息全局钩子错误forms中:raise ValidationError(‘两次密码不一致‘) #加在全局的错误里面 form.errors.get("__all__")self.add_error("r_pwd", ValidationError(‘两次密码不一致‘))views.py中:errors=form.errors.get("__all__")模板中:<span>{{ errors.0 }}</span> ‘‘‘ |
四、templates.reg.html
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<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> .error{ color: red; } .register { width: 400px; margin-top: 20px; margin-left: auto; margin-right: auto; border: 1px solid #f0f0f0; padding: 10px 30px 50px 30px; -webkit-box-shadow: 5px 10px 10px rgba(0, 0, 0, .05); box-shadow: 5px 10px 10px rgba(0, 0, 0, .05); } .register h3{font-size: 25px; text-align: center;font-weight: bold;} </style> <!-- 最新版本的 Bootstrap 核心 CSS 文件 --> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"></head><body><div class="register"> <h3>用户注册</h3> <form action="" method="post" novalidate> {% csrf_token %} <div class="form-group"> <label for="">{{ form.name.label }}</label> {{ form.name }} <span class="pull-right error">{{ form.name.errors.0 }}</span> </div> <div class="form-group"> <label for="">{{ form.pwd.label }}</label> {{ form.pwd }} <span class="pull-right error">{{ form.pwd.errors.0 }}</span> </div> <div class="form-group"> <label for="">确认密码</label> {{ form.r_pwd }} <span class="pull-right error">{{ form.r_pwd.errors.0 }}</span><span class="pull-right error">{{ errors.0 }}</span> </div> <div class="form-group"> <label for="">邮箱</label> {{ form.email }} <span class="pull-right error">{{ form.email.errors.0 }}</span></div> <div class="form-group"> <label for="">手机号</label> {{ form.tel }} <span class="pull-right error">{{ form.tel.errors.0 }}</span></div> <input type="submit" class="btn btn-default" value="注册"/> </form><!-- <h3>forms组件渲染方式2</h3> <form action="" method="post" novalidate> {% csrf_token %} {% for field in form %} <div class="form-group"> <label for="">{{ field.label }}</label> {{ field }} <span class="pull-right error">{{ field.errors.0 }}</span> </div> {% endfor %} <input type="submit" class="btn btn-default" value="注册"/> </form> <h3>forms组件渲染方式3</h3> <form action="" method="post"> {% csrf_token %} {{ form.as_p }} <input type="submit" class="btn btn-default" value="注册"/> </form>--></div></body></html> |