构造django形式的属性值

Posted 2021-04-24

如何将值传递给django表单中的属性构造函数？

换句话说，我有一个这样的表单，我想在实例化表单时设置SOMETHING。

class ImageUploadFileForm(forms.ModelForm):
    class Meta:
        model = Photo
        fields = [ 'image' ]
    image = cloudinary.forms.CloudinaryJsFileField({ 'public_id': SOMETHING })

即在视图中：

uploadform = ImageUploadFileForm(instance=whatever, something='BLAHBLAHBLAH')

我怀疑我错误地想到了这个......

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Thx Shang Wang！

对于在CloudinaryJSFileField中搜索的所有人，不要忘记添加“选项”，如下所示：

class ImageUploadFileForm(ModelFormControlMixin):
    class Meta:
        model = Photo
        fields = [ 'image' ]

    def __init__(self, *args, **kwargs):
        self.public_id = kwargs.pop('public_id')
        super(ImageUploadFileForm, self).__init__(*args, **kwargs)
        self.fields['image'] = cloudinary.forms.CloudinaryJsFileField(options={ 'public_id': str(self.public_id) })

答案

class ImageUploadFileForm(forms.ModelForm):
    class Meta:
        model = Photo
        fields = [ 'image' ]

    def __init__(self, *args, **kwargs):
        self.something = kwargs.pop('something')
        super(ImageUploadFileForm, self).__init__(*args, **kwargs)
        self.fields['image'] = cloudinary.forms.CloudinaryJsFileField({ 'public_id': self.something })

然后

uploadform = ImageUploadFileForm(instance=whatever, something='BLAHBLAHBLAH')

将参数传递给表单构造函数的相当标准方法。