django的from组件

概述1.后端 from django import fromsfrom django import formsfrom app import modelsclass RegForm(forms.Form): username=forms.CharField(max_length=8,min_length=3,label=‘用户名‘,

1.后端
from django import fromsfrom  django import formsfrom app import modelsclass RegForm(forms.Form):      username=forms.CharFIEld(max_length=8,min_length=3,label=‘用户名‘,error_messages={                                   ‘max_length‘:‘用户名最长八位‘,‘min_length‘:‘用户名最短三位‘,‘required‘:‘用户名不能为空‘,},Widget=forms.Widgets.Textinput(attrs={‘class‘:‘form-control‘}))      password=forms.CharFIEld(max_length=8,label="密码",error_messages={                                    ‘max_length‘:‘密码最长八位‘,‘min_length‘:‘密码最短三位‘,‘required‘:‘密码不能为空‘                                },Widget=forms.Widgets.Passwordinput(attrs={‘class‘:‘form-control‘}))      confirm_password = forms.CharFIEld(max_length=8,label="确认密码",error_messages={                                     ‘max_length‘: ‘密码最长八位‘,‘min_length‘: ‘密码最短三位‘,‘required‘: ‘密码不能为空‘                                 },Widget=forms.Widgets.Passwordinput(attrs={‘class‘:‘form-control‘}))      email=forms.EmailFIEld(label=‘邮箱‘,error_messages={          ‘lnvalID‘:‘邮箱格式错误‘,‘required‘:‘邮箱不能为空‘,Widget=forms.Widgets.Emailinput(attrs={‘class‘:‘form-control‘}))      def clean_username(self):          username=self.cleaned_data.get(‘username‘)          user_obj=models.Userinfo.objects.filter(username=username).first()          if user_obj:              self.add_error(‘username‘,‘用户名已存在‘)          else:              return username      def clean(self):           password=self.cleaned_data.get(‘password‘)           confir_password=self.cleaned_data.get(‘confirm_password‘)           if not password == confir_password:               self.add_error(‘confirm_password‘,‘两次密码不一致‘)           else:               return self.cleaned_data

　2　前端渲染

{% for foo in  form_obj%}                        <div >                        <label for="{{ foo.auto_ID }}">{{ foo.label }}</label>                            {{ foo }}                             <span></span>                        </div>                    {% endfor %}

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