CompareTo<T extends Comparable<T>> class

A validator that compares a value against a static comparison value.

CompareTo validates by comparing the field value against a fixed value (unlike CompareWith which compares against another field). Supports various comparison types.

Example:

CompareTo.greaterOrEqual(
  18,
  message: 'Must be at least 18',
)
Inheritance

Constructors

CompareTo(T? value, CompareType type, {String? message})
Creates a CompareTo validator with the specified comparison type.
const
CompareTo.equal(T? value, {String? message})
Creates a validator that checks for equality with a value.
const
CompareTo.greater(T? value, {String? message})
Creates a validator that checks if field value is greater than the specified value.
const
CompareTo.greaterOrEqual(T? value, {String? message})
Creates a validator that checks if field value is greater than or equal to the specified value.
const
CompareTo.less(T? value, {String? message})
Creates a validator that checks if field value is less than the specified value.
const
CompareTo.lessOrEqual(T? value, {String? message})
Creates a validator that checks if field value is less than or equal to the specified value.
const

Properties

hashCode → int
The hash code for this object.
no setteroverride
message → String?
Custom error message, or null to use default localized message.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
type → CompareType
The type of comparison to perform.
final
value → T?
The value to compare against.
final

Methods

combine(Validator<T> other) → Validator<T>
Combines this validator with another validator using AND logic.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
shouldRevalidate(FormKey source) → bool
Determines if this validator should be re-run when the specified form key changes.
inherited
toString() → String
A string representation of this object.
inherited
validate(BuildContext context, T? value, FormValidationMode state) → FutureOr<ValidationResult?>
Validates the given value and returns a validation result.
override

Operators

operator &(Validator<T> other) → Validator<T>
Combines this validator with another using AND logic (alias for combine).
inherited
operator +(Validator<T> other) → Validator<T>
Combines this validator with another using AND logic (alias for combine).
inherited
operator ==(Object other) → bool
The equality operator.
override
operator unary-() → Validator<T>
Negates this validator's result (alias for ~ operator).
inherited
operator |(Validator<T> other) → Validator<T>
Combines this validator with another using OR logic.
inherited
operator ~() → Validator<T>
Negates this validator's result.
inherited