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Combined Validation Errors

combined_validation_errors

Aggregate error that collects multiple ValidationFieldErrors instances.

Defines CombinedValidationErrors, used when input validation produces
errors across multiple fields and all failures should be reported together
in a single error response.

Extends ValueErrorMixin (catchable as ValueError) and
CombinedErrors[ValidationFieldErrors].

CombinedValidationErrors

Bases: ValueErrorMixin, CombinedErrors[ValidationFieldErrors]

Aggregates multiple validation errors for easier handling and reporting.

Example 
from forging_blocks.foundation.errors import (
    CombinedValidationErrors,
    ErrorMessage,
    FieldReference,
    ValidationFieldErrors,
)
from forging_blocks.foundation.errors import Error as FBError

fe1 = ValidationFieldErrors(
    FieldReference("username"), [FBError[str](ErrorMessage("Too short"))]
)
fe2 = ValidationFieldErrors(
    FieldReference("email"), [FBError[str](ErrorMessage("Invalid format"))]
)
combined = CombinedValidationErrors([fe1, fe2])
assert isinstance(combined, ValueError)
print(len(combined))  # 2
Source code in src/forging_blocks/foundation/errors/combined/combined_validation_errors.py 
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class CombinedValidationErrors(ValueErrorMixin, CombinedErrors[ValidationFieldErrors]):
    """Aggregates multiple validation errors for easier handling and reporting.

    Example:
        ```python
        from forging_blocks.foundation.errors import (
            CombinedValidationErrors,
            ErrorMessage,
            FieldReference,
            ValidationFieldErrors,
        )
        from forging_blocks.foundation.errors import Error as FBError

        fe1 = ValidationFieldErrors(
            FieldReference("username"), [FBError[str](ErrorMessage("Too short"))]
        )
        fe2 = ValidationFieldErrors(
            FieldReference("email"), [FBError[str](ErrorMessage("Invalid format"))]
        )
        combined = CombinedValidationErrors([fe1, fe2])
        assert isinstance(combined, ValueError)
        print(len(combined))  # 2
        ```
    """