Django self.cleaned_data Keyerror [英] Django self.cleaned_data Keyerror

问题描述

我正在写一个Django网站，我正在为自己的表单进行验证：

  class CreateJobOpportunityForm 
 subject = forms.CharField（max_length = 30）
 start_date = forms.DateField（widget = SelectDateWidget）
 end_date = forms.DateField（widget = SelectDateWidget）
 
 def clean_start_date（self）：
 start_date = self.cleaned_data ['start_date'] 
 end_date = self.cleaned_data ['end_date'] 
如果start_date> end_date：
 raise forms.ValidationError（开始日期应在结束日期之前）
 return start_date 
  

，但是当start_date小于end_date时，它说：

  KeyError at / create_job_opportunity 
 'end_date'
  

为什么不识别'end_date' code> key？

解决方案

由于一个字段取决于另一个字段，最好是在 clean 方法，而不是单独的 clean_field 方法。



$ clean $（$）
clean_data = super（CreateJobOpportunityForm，self）.clean（）
end_date = clean_data ['end_date']
start_date = clean_data ['start_date']
＃在这里清理
返回clean_data


否则你必须确保你的 end_da te 字段在 start_date 之前被清理。

I'm writing a Django website and i'm writing my own validation for a form :

class CreateJobOpportunityForm(forms.Form):
    subject = forms.CharField(max_length=30)
    start_date = forms.DateField(widget=SelectDateWidget)
    end_date = forms.DateField(widget=SelectDateWidget)

    def clean_start_date(self):
        start_date = self.cleaned_data['start_date']
        end_date = self.cleaned_data['end_date']
        if start_date > end_date :
            raise forms.ValidationError("Start date should be before end date.")
        return start_date

but when the start_date is less than end_date it says :

KeyError at /create_job_opportunity
'end_date'

why doesn't it recognize the 'end_date' key?

解决方案

Since one field depends on another field, it's best if you did your cleaning in the clean method for the form, instead of the individual clean_field method.

def clean(self):
    cleaned_data = super(CreateJobOpportunityForm, self).clean()
    end_date = cleaned_data['end_date']
    start_date = cleaned_data['start_date']
    # do your cleaning here
    return cleaned_data

Else you would have to ensure that your end_date field gets cleaned before start_date.

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