Validation rule that allows you to check combinations of rules created with AND logical operations.
Implements: IValidationRule
Description
The AndRule class allows you to validate combinations of rules created with AND logical operations.
Important points
- When one or more of the combined rules return errors, then this rule returns all the errors that appeared.
- When none of the combined rules returns errors, then this rule also returns no errors.
Constructors
Creates a new validation rule and sets its values.
AndRule(*rules: IValidationRule)
- rules: IValidationRule - a list of rules to join with AND operator
Instance methods
validate
Validates a given value against this rule.
validate(path: str, schema: Schema, value: Any, results: List[ValidationResult])
- path: str - a dot notation path to the value.
- schema: Schema - a schema this rule is called from
- value: Any - a value to be validated.
- results: List[ValidationResult] - a list with validation results to add new results.
Example
schema = Schema().with_rule(AndRule(ValueComparisonRule("GTE", 1), ValueComparisonRule("LTE", 10)))
schema.validate(0) # Result: 0 must be greater or equal to 1
schema.validate(5) # Result: no error
schema.validate(20) # Result: 20 must be letter or equal 10