BeforeValidator

A metadata class that indicates that a validation should be applied before the inner validation logic.

Attributes

Attribute	Type	Description
func	`core_schema.NoInfoValidatorFunction	core_schema.WithInfoValidatorFunction`
json_schema_input_type	Any = PydanticUndefined	The input type used to generate the appropriate JSON Schema (in validation mode).

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Constructor

Signature

def BeforeValidator(
    func: core_schema.NoInfoValidatorFunction | core_schema.WithInfoValidatorFunction,
    json_schema_input_type: Any = PydanticUndefined
) - > null

Parameters

Name	Type	Description
func	`core_schema.NoInfoValidatorFunction	core_schema.WithInfoValidatorFunction`
json_schema_input_type	Any = PydanticUndefined	The input type used to generate the appropriate JSON Schema.

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