django覆盖表单clean方法

问题描述

当覆盖表单clean方法时，如何知道其在任何字段上的验证失败？例如在下面的表单中，如果我覆盖了干净的方法，如何知道窗体是否在任何字段上验证失败？

  PersonForm（forms.Form）：
 title = Forms.CharField（max_length = 100）
 first_name = Forms.CharField（max_length = 100）
 surname = Forms.CharField（max_length = 
 password = Forms.CharField（max_length = 100）
 
 def clean（self，value）：
 cleaning_data = self.cleaned_data 
 
如果FORM已经失败的验证：
 self.data ['password'] ='abc'
 raise forms.ValidationError（您验证失败！）
 ELSE：
 return clean_data 
  

谢谢

解决方案>

您可以检查是否有任何错误添加到错误dict：

  def clean（self，value）： 
 cleaning_data = self.cleaned_data 
 
如果self._errors：
 self.data ['password' ] ='abc'
 raise forms.ValidationError（你验证失败！）
 else：
返回clean_data 
  

奖金！您可以检查特定字段的错误：

  def clean（self，value）：
 cleaning_data = self.cleaned_data 
 
如果self._errors和'title'在self._errors中：
 raise forms.ValidationError（你称之为标题？！）
 else：
返回cleaning_data 
  

When overwriting a form clean method how do you know if its failed validation on any of the fields? e.g. in the form below if I overwrite the clean method how do I know if the form has failed validation on any of the fields?

class PersonForm(forms.Form):
    title = Forms.CharField(max_length=100)
    first_name = Forms.CharField(max_length=100)
    surname = Forms.CharField(max_length=100)
    password = Forms.CharField(max_length=100)

def clean(self, value):
    cleaned_data = self.cleaned_data

    IF THE FORM HAS FAILED VALIDATION:
        self.data['password'] = 'abc'
        raise forms.ValidationError("You have failed validation!")
    ELSE:
        return cleaned_data

Thanks

解决方案

You can check if any errors have been added to the error dict:

def clean(self, value):
    cleaned_data = self.cleaned_data

    if self._errors:
        self.data['password'] = 'abc'
        raise forms.ValidationError("You have failed validation!")
    else:
        return cleaned_data

BONUS! You can check for errors on specific fields:

def clean(self, value):
    cleaned_data = self.cleaned_data

    if self._errors and 'title' in self._errors:
        raise forms.ValidationError("You call that a title?!")
    else:
        return cleaned_data

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