VString class

VString is a validation class for String values in Validart.

Example

final validator = v.string().email();
print(validator.validate('test@example.com')); // true
print(validator.validate('invalid-email')); // false
Inheritance

Constructors

VString(StringMessage _message, {required String? message})
Creates an instance of VString for validating string values.

Properties

hashCode → int
The hash code for this object.
no setterinherited
isNullable → bool
Indicates whether the value can be null.
no setterinherited
isOptional → bool
Indicates whether the value is optional.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
validators → List<Validator<String>>
Returns the list of validators added to this type.
no setterinherited

Methods

add(Validator<String> validator) → VString
Adds a custom validator to the VString instance.
override
alpha({String? message}) → VString
Ensures that the string contains only alphabetic characters (A-Z, a-z).
alphanumeric({String? message}) → VString
Ensures that the string contains only alphanumeric characters (letters and numbers).
any(covariant List<VString> types, {String? message}) → VString
Ensures that the string matches at least one of the provided VString validators.
override
array({String? message}) → VArray<String>
Creates an array validator (VArray<String>) for validating lists of string values.
override
card({String? message}) → VString
Ensures that the string is a valid credit card number.
cep({String? message, ValidationMode mode = ValidationMode.unformatted}) → VString
Ensures that the string is a valid Brazilian postal code (CEP).
cnpj({String? message, ValidationMode mode = ValidationMode.unformatted}) → VString
Ensures that the string is a valid CNPJ (Cadastro Nacional da Pessoa Jurídica).
contains(String data, {String message(String data)?, CaseSensitivity caseSensitivity = CaseSensitivity.sensitive}) → VString
Ensures that the string contains the specified substring.
cpf({String? message, ValidationMode mode = ValidationMode.unformatted}) → VString
Ensures that the string is a valid CPF (Cadastro de Pessoas Físicas).
date({String? message}) → VString
Ensures that the string is a valid date format.
double({String? message}) → VString
Ensures that the string represents a valid double value.
email({String? message}) → VString
Validates that the string is a properly formatted email address.
endsWith(String sufix, {String message(String sufix)?, CaseSensitivity caseSensitivity = CaseSensitivity.sensitive}) → VString
Ensures that the string ends with the specified suffix.
equals(String data, {String message(String data)?, CaseSensitivity caseSensitivity = CaseSensitivity.sensitive}) → VString
Ensures that the string is exactly equal to the specified value.
every(covariant List<VString> types, {String? message}) → VString
Ensures that the string matches all of the provided VString validators.
override
getErrorMessage(String? value) → dynamic
Retrieves the validation error message for a given value.
inherited
integer({String? message}) → VString
Ensures that the string represents a valid integer value.
ip({String? message}) → VString
Ensures that the string is a valid IP address (IPv4 or IPv6).
jwt({String? message}) → VString
Ensures that the string is a valid JSON Web Token (JWT).
max(int maxLength, {String message(int maxLength)?}) → VString
Ensures that the string does not exceed the specified maximum length.
min(int minLength, {String message(int minLength)?}) → VString
Ensures that the string has at least the specified minimum length.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
nullable() → VString
Marks the string as nullable, allowing null as a valid value.
override
optional() → VString
Marks the string as optional, meaning it does not require a value.
override
password({String? message}) → VString
Ensures that the string meets password security requirements.
pattern(String pattern, {String? message}) → VString
Ensures that the string matches the specified regular expression pattern.
phone(PhoneType type, {String? message, AreaCodeFormat areaCode = AreaCodeFormat.required, CountryCodeFormat countryCode = CountryCodeFormat.none, ValidationMode mode = ValidationMode.unformatted}) → VString
Ensures that the string is a valid phone number based on the specified format.
refine(bool validator(String data), {String? message}) → VString
Applies a custom validation function to the String value.
override
slug({String? message}) → VString
Ensures that the string is a valid slug.
startsWith(String prefix, {String message(String prefix)?, CaseSensitivity caseSensitivity = CaseSensitivity.sensitive}) → VString
Ensures that the string starts with the specified prefix.
time({String? message}) → VString
Ensures that the string follows a valid time format.
toString() → String
A string representation of this object.
inherited
url({String? message}) → VString
Ensures that the string is a valid URL.
uuid({UUIDVersion? version, String? message}) → VString
Ensures that the string is a valid UUID (Universally Unique Identifier).
validate(String? value) → bool
Validates the provided value based on the assigned validation rules.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited