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  • django----利用Form 实现两次密码输入是否一样 ( 局部钩子和全局钩子 )

    from django import forms  # 导入表单模块
    from django.core.exceptions import ValidationError
     
    class RegisterForm(forms.Form): # 自定义表单类,并继承forms.Form
      email = forms.EmailField(widget=forms.EmailInput(
          attrs={"class": "form-control"}))
     
      username = forms.CharField(min_length=4, max_length=12, widget=forms.TextInput(
          attrs={"class": "form-control"}))
     
      password = forms.CharField(min_length=6, widget=forms.PasswordInput(
          attrs={"class": "form-control"}))
     
      password2 = forms.CharField(min_length=6, widget=forms.PasswordInput(
          attrs={"class": "form-control"}))
     
      valid_code = forms.CharField(widget=forms.TextInput(
          attrs={"class": "form-control"}))
     
      def __init__(self, request, *args, **kwargs):
          # 如果需要额外接收参数,要重写构造器函数
          # 这里额外接收一个参数,用于从request.sesssion中提取之前保存的验证码
          super(RegisterForm,self).__init__(*args, **kwargs)
          self.request = request
     
      # 自定义方法(局部钩子),密码必须包含字母和数字
      def clean_password(self):
          if self.cleaned_data.get('password').isdigit() or self.cleaned_data.get('password').isalpha():
              raise ValidationError('密码必须包含数字和字母')
          else:
              return self.cleaned_data['password']
     
      def clean_valid_code(self):  # 检验验证码正确;之前生成的验证码保存在了了session中
          if self.cleaned_data.get('valid_code').upper() == self.request.session.get('valid_code'):
              return self.cleaned_data['valid_code']
          else:
              raise ValidationError('验证码不正确')
     
      # 自定义方法(全局钩子, 检验两个字段),检验两次密码一致;
      def clean(self):
          if self.cleaned_data.get('password') != self.cleaned_data.get('password2'):
              raise ValidationError('密码不一致')
          else:
              return self.cleaned_data
     
      # 注意,上面的字典取值用get, 因为假如在clean_password中判断失败,那么没有返回值,最下面的clean方法直接取值就会失败s 
    

      

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  • 原文地址:https://www.cnblogs.com/yanxiaoge/p/10627582.html
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