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edc-form-validators

Form validator classes for ModelForms

ModelForm FormValidator

FormValidator simplifies common patterns used in ModelForm.clean. For example, if there is a response to field A then there should not a be response to field B and visa-versa.

Declare a form with it’s form_validator class and use FormValidatorMixin:

class MyFormValidator(FormValidator):

    def clean(self):
        self.required_if(
            YES,
            field='f1',
            field_required='f2')
        ...

class MyModelForm(FormValidatorMixin, forms.ModelForm):

    form_validator_cls = MyFormValidator

    class Meta:
        model = TestModel
        fields = '__all__'

Testing

Test the form_validator without having to instantiate the ModelForm:

def test_my_form_validator(self):
    options = {
        'f1': YES,
        'f2': None}
    form_validator = MyFormValidator(cleaned_data=options)
    self.assertRaises(ValidationError, form_validator.validate)
    self.assertIn('f2', form_validator._errors)

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  • Released:
Latest release

2 maintainers

PyPI data
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Avatar for erikvw from gravatar.com erikvw Avatar for JonathanWillitts from gravatar.com JonathanWillitts

Credits

Author: Erik van Widenfelt

License

GNU General Public License v3 (GPLv3) (GPL license, see LICENSE)

Requires

Python >=3.12

Tags

django modelform form validation edc clinicedc clinical trials

Classifiers

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