Django: Make certain fields in a ModelForm required=False

following from comments. Probably yes:

class ThatForm(ModelForm):    def __init__(self, *args, **kwargs):        # first call parent's constructor        super(ThatForm, self).__init__(*args, **kwargs)        # there's a `fields` property now        self.fields['desired_field_name'].required = False

you ought to add blank=True to the corresponding model

The documentation says

If the model field has blank=True, then required is set to False on the form field. Otherwise, required=True.

Also see the documentation for blank itself.

When we need to set required option on a bunch of fields we can:

class ThatForm(forms.ModelForm):    def __init__(self, *args, **kwargs):        super().__init__(*args, **kwargs)        for field in self.Meta.required:            self.fields[field].required = True    class Meta:        model = User        fields = (            'email',            'first_name',            'last_name',            'address',            'postcode',            'city',            'state',            'country',            'company',            'tax_id',            'website',            'service_notifications',        )        required = (            'email',            'first_name',            'last_name',            'address',            'postcode',            'city',            'country',        )