Validators class
Pure Dart form 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
-
cableLength(
String? value) → String? - Validates cable length (must be positive)
-
cableSection(
String? value) → String? - Validates cable section (common values: 1.5, 2.5, 4, 6, 10, 16, etc.)
-
combine(
String? value, List< String? Function(String?)> validators) → String? - Combines multiple validators Returns first error found, or null if all pass
-
current(
String? value) → String? - Validates current (must be positive)
-
email(
String? value) → String? - Validates email format Returns error message if invalid, null if valid
-
integer(
String? value) → String? - Validates integer
-
nonNegativeNumber(
String? value) → String? - Validates non-negative number (>= 0)
-
positiveNumber(
String? value) → String? - Validates positive number (> 0)
-
power(
String? value) → String? - Validates power (must be positive)
-
powerFactor(
String? value) → String? - Validates power factor (0.1 to 1.0)
-
range(
String? value, double min, double max) → String? -
Validates number within range
`min`,`max` -
required(
String? value, {String fieldName = 'Este campo'}) → String? -
Validates that field is not empty
fieldNameis used in error message -
voltage(
String? value) → String? - Validates voltage (must be positive)