ValueError: Field 'maca' expected a number but got ''-CodePudding

I have a model like this

class MacaModel(models.Model):
    maca = models.PositiveIntegerField(
       db_column='Maca', blank=True, null=True
    )

I have form like this

class MacaForm(models.ModelForm):
    maca = forms.CharField(required=False,widget=forms.TextInput(attrs={'placeholder': 'Maca'}))

I'm trying to send null value from input, but got this error

ValueError: Field 'maca' expected a number but got ''.

How can I handle if I don't send a value accept is as a None value or something like that?

CodePudding user response：

You need to specify that the field should work with None in case it has not been filled in. You can do that by setting the empty_value=… parameter [Django-doc]:

class MacaForm(models.ModelForm):
    maca = forms.CharField(
        required=False,
        empty_value=None,
        widget=forms.TextInput(attrs={'placeholder': 'Maca'})
    )