AndRule

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(List<IValidationRule>? rules)

• rules: List<IValidationRule>? - list of rules to join with the AND operator.

Instance methods

validate

Validates a given value against this rule.

@override

void validate(String? path, Schema schema, dynamic value, List<ValidationRule> results)

• path: String? - dot notation path to the value.
• schema: Schema - schema this rule is called from.
• value: dynamic - value to be validated.
• results: List<ValidationRule> - list with validation results to add new results.

Example

var schema =  Schema()
    .withRule( 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

See also

• IValidationRule