LoRequiredValidator<T> class

Validates that the given value is not null or empty.

Implemented types

• LoFieldBaseValidator<T>

Constructors

LoRequiredValidator([String message = 'Required'])

LoRequiredValidator.nullOnly([String message = 'Required'])

Properties

hashCode → int

The hash code for this object.

no setter, inherited

message → String

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

validateEmpty → bool

Validates that the given value is not "empty", which is relative to T, the empty values for primitive types are:

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

validate(T? value) → String?

Returns String containing the error message if value is invalid. or null when value is valid.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited