Validators class

A collection of common validation rules for form fields.

Constructors

Validators()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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

Static Methods

custom(ValidationFunction func, {required String message}) → ValidationRule
Creates a custom validation rule using the given func.
email({String message = 'Invalid email format'}) → ValidationRule
Validation rule to check for valid email format.
maxLength(int length, {String? message}) → ValidationRule
Validation rule to check the maximum length of a string.
minLength(int length, {String? message}) → ValidationRule
Validation rule to check the minimum length of a string.
oneLowerCase({String message = 'Must contain at least one lowercase letter'}) → ValidationRule
Validation rule to require at least one lowercase letter.
oneNumber({String message = 'Must contain at least one number'}) → ValidationRule
Validation rule to require at least one numeric digit.
oneSpecial({String message = 'Must contain at least one special character'}) → ValidationRule
Validation rule to require at least one special character.
oneUpperCase({String message = 'Must contain at least one uppercase letter'}) → ValidationRule
Validation rule to require at least one uppercase letter.
pattern(String pattern, {required String message}) → ValidationRule
Validation rule to check if a string matches a regex pattern.
required({String message = 'This field is required'}) → ValidationRule
Validation rule to require a non-empty string.
validate(String? value, List<ValidationRule> rules) → String?
Validates the value against a list of rules.