Validator

Validators are used to validate the data after filters have been applied. They ensure that the input data meets the required conditions before further processing.

Overview

Validators can be added into the add method for a specific field or as a global validator for all fields in add_global_validator.

The global validation will be executed before the specific field validation.

Example

from flask_inputfilter import InputFilter
from flask_inputfilter.validators import IsIntegerValidator, RangeValidator

class UpdatePointsInputFilter(InputFilter):
    def __init__(self):
        super().__init__()

        self.add(
            'id',
            required=True
        )

        self.add(
            'points',
            required=True,
            validators=[RangeValidator(min_value=0, max_value=10)]
        )

        self.add_global_validator(IsIntegerValidator())

Special Validators

Following are the special validators that are used to combine or mutate the normal validators:

Base Validator

Detailed Description