Rule<T> class abstract

An abstract class designed to use with Validator.

All the rules must extend this class as it specifies the blueprint on how the Validator is expecting the Rule classes to be.

Implementers

• AnyRule
• EachRule
• InRule
• MaxLengthRule
• MinLengthRule
• NotInRule
• RegexRule
• RequiredRule

Constructors

Rule(String? validationMessage)

The default constructor, taking custom validationMessage.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

transformMessage ↔ MessageTransformer?

A function used for transforming the message that comes back from the rules.

getter/setter pair

validationMessage → String?

A custom validation message to be used with the rule.

final

Methods

getRuleSpecificParams() → Map<String, String>

Returns a Map of values that are specific to the child Rule.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

onValidate(String entityName, T? value) → String?

Returns the validation message by the child class extending Rule.

toString() → String

A string representation of this object.

inherited

validate(String entityName, T? value) → String?

Returns validation message if validation fails.

Operators

operator ==(Object other) → bool

The equality operator.

inherited