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当设置空白和null时,django表单字段抛出错误

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我有以下表格:

class PlayerForm(forms.ModelForm):
    crop_coords = forms.CharField(widget=forms.TextInput(attrs={'style':'display:none'}))
    profile_image2 = forms.ImageField()

    class Meta:
        model = Player

我尝试将这些字段设为可选字段,如下所示:

class PlayerForm(forms.ModelForm):
    crop_coords = forms.CharField(widget=forms.TextInput(attrs={'style':'display:none'}), blank=True, null=True)
    profile_image2 = forms.ImageField(blank=True, null=True)

    class Meta:
        model = Player

我收到一个奇怪的错误:

在PlayerForm中输入“/mypath/leagues/forms.py”,第80行
crop_coords = forms.CharField(widget = forms.TextInput(attrs = {'style':'display:none'}),
blank = True,null = True)文件“/mypath/lib/python2.7/site-packages/django/forms/fields.py”,第214行,在init super(CharField,self).init(* args,* * kwargs)TypeError:init()得到一个意外的关键字参数'null'

如果没有收到此错误,如何才能使这些字段不需要?

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