flutter_validators library

Classes

Validator

A utility class for Flutter Form validation. Provides methods that return a validator function suitable for TextFormField.

Extensions

AlphaX on String

Extension providing alpha and alphanumeric validation methods on String.

AsciiX on String

Extension providing ASCII validation methods on String.

Base32X on String

Extension providing base32 validation methods on String.

Base58X on String

Extension providing base58 validation methods on String.

Base64X on String

Extension providing Base64 validation methods on String.

BlacklistX on String

Extension providing character filtering sanitizers on String.

BooleanX on String

Extension providing boolean validation methods on String.

ByteLengthX on String

Extension providing byte-length validation methods on String.

CreditCardX on String

Extension providing credit card validation methods on String.

DateX on String

Extension providing date validation methods on String.

DecimalX on String

Extension providing decimal validation methods on String.

EmailX on String

Extension providing email validation methods on String.

EqualX on String

Extension providing string equality methods on String.

EscapeX on String

Extension providing HTML escape sanitizers on String.

FloatX on String

Extension providing float validation methods on String.

FQDNX on String

Extension providing FQDN validation methods on String.

HexadecimalX on String

Extension providing hexadecimal validation methods on String.

HexColorX on String

Extension providing hexadecimal color validation methods on String.

IntX on String

Extension providing integer validation methods on String.

InX on String

Extension providing membership validation methods on String.

IpX on String

Extension providing IP validation methods on String.

JsonX on String

Extension providing JSON validation methods on String.

JWTX on String

Extension providing JWT validation methods on String.

LatLongX on String

Extension providing latitude/longitude validation methods on String.

LengthX on String

Extension providing length validation methods on String.

LowercaseX on String

Extension providing lowercase validation methods on String.

MACAddressX on String

Extension providing MAC address validation methods on String.

MatchesX on String

Extension providing pattern matching methods on String.

MD5X on String

Extension providing MD5 hash validation methods on String.

MongoIdX on String

Extension providing MongoDB ObjectId validation methods on String.

NormalizeEmailX on String

Extension providing email normalization on String.

NumericX on String

Extension providing numeric validation methods on String.

OctalX on String

Extension providing octal validation methods on String.

PhoneX on String

Extension providing phone number validation methods on String.

PortX on String

Extension providing port validation methods on String.

SemVerX on String

Extension providing SemVer validation methods on String.

SlugX on String

Extension providing slug validation methods on String.

StripLowX on String

Extension providing control-character stripping on String.

StrongPasswordX on String

Extension providing strong-password validation methods on String.

ToBooleanX on String

Extension providing boolean conversion on String.

ToNumberX on String

Extension providing numeric and date conversions on String.

TrimX on String

Extension providing trimming sanitizers on String.

UppercaseX on String

Extension providing uppercase validation methods on String.

UrlX on String

Extension providing URL validation methods on String.

UuidX on String

Extension providing UUID validation methods on String.

Functions

blacklist(String str, String chars) → String

Removes all characters that appear in chars from the string.

contains(String str, String seed, {bool ignoreCase = false, int minOccurrences = 1}) → bool

Checks if the string contains the seed substring.

equals(String str, String comparison) → bool

Checks if two strings are exactly equal.

escape(String str) → String

Replaces HTML-unsafe characters with their entity equivalents.

isAlpha(String str) → bool

Checks if the string contains only letters (a-z, A-Z).

isAlphanumeric(String str) → bool

Checks if the string contains only letters and numbers.

isAscii(String str) → bool

Checks if the string contains only ASCII characters.

isBase32(String str) → bool

Checks if the string is base32 encoded.

isBase58(String str) → bool

Checks if the string is base58 encoded.

isBase64(String str, {bool urlSafe = false}) → bool

Checks if the string is Base64 encoded.

isBoolean(String str) → bool

Checks if the string represents a boolean value.

isByteLength(String str, int min, [int? max]) → bool

Checks if the string's UTF-8 byte length falls in a range.

isCreditCard(String str) → bool

Checks if the string is a valid credit card number.

isDate(String str) → bool

Checks if the string represents a valid calendar date.

isDecimal(String str) → bool

Checks if the string represents a decimal number.

isEmail(String str) → bool

Checks if the string is a valid email address.

isFloat(String str, {double? min, double? max}) → bool

Checks if the string represents a finite floating-point number.

isFQDN(String str) → bool

Checks if the string is a fully qualified domain name (FQDN).

isHexadecimal(String str) → bool

Checks if the string is a hexadecimal number.

isHexColor(String str) → bool

Checks if the string is a hexadecimal color.

isIn(String str, Iterable<String> values) → bool

Checks if the string is one of the values.

isInt(String str) → bool

Checks if the string represents a decimal integer.

isIP(String str, [int? version]) → bool

Checks if the string is a valid IP address (IPv4 or IPv6).

isJson(String str) → bool

Checks if the string is valid JSON.

isJWT(String str) → bool

Checks if the string is a valid JSON Web Token (JWT).

isLatLong(String str) → bool

Checks if the string is a valid latitude,longitude pair.

isLength(String str, int min, [int? max]) → bool

Checks if the string's length falls in a range.

isLowercase(String str) → bool

Checks if the string is entirely lowercase.

isMACAddress(String str) → bool

Checks if the string is a valid MAC address.

isMD5(String str) → bool

Checks if the string is a valid MD5 hash.

isMongoId(String str) → bool

Checks if the string is a valid MongoDB ObjectId.

isNumeric(String str) → bool

Checks if the string represents a valid number.

isOctal(String str) → bool

Checks if the string is an octal number.

isPhone(String str) → bool

Checks if the string is a valid phone number.

isPort(String str) → bool

Checks if the string is a valid port number.

isSemVer(String str) → bool

Checks if the string is a valid Semantic Version (SemVer).

isSlug(String str) → bool

Checks if the string is a valid URL slug.

isStrongPassword(String str, {int minLength = 8, int minLowercase = 1, int minUppercase = 1, int minNumbers = 1, int minSymbols = 1}) → bool

Checks if the string is a strong password.

isUppercase(String str) → bool

Checks if the string is entirely uppercase.

isURL(String str) → bool

Checks if the string is a valid HTTP or HTTPS URL.

isUUID(String str) → bool

Checks if the string is a valid UUID (versions 1, 3, 4, or 5).

ltrim(String str, [String? chars]) → String

Removes the given chars from the start of the string.

matches(String str, Pattern pattern) → bool

Checks if the string matches the given pattern.

normalizeEmail(String str) → String?

Canonicalizes an email address.

rtrim(String str, [String? chars]) → String

Removes the given chars from the end of the string.

stripLow(String str, {bool keepNewLines = false}) → String

Removes control characters from the string.

toBoolean(String str, {bool strict = false}) → bool

Converts the string to a boolean.

toDate(String str) → DateTime?

Converts the string to a DateTime.

toFloat(String str) → double?

Converts the string to a double.

toInt(String str, {int? radix}) → int?

Converts the string to an integer.

trim(String str, [String? chars]) → String

Removes the given chars from both ends of the string.

unescape(String str) → String

Converts HTML entities back into their unsafe character equivalents.

whitelist(String str, String chars) → String

Removes all characters that do not appear in chars from the string.