compare static method
Gets a FormGroup validator that compares two controls in the group.
The arguments controlName
, compareControlName
and compareOption
must not be null.
Example:
Validates that 'amount' is lower or equals than 'balance'
final form = fb.group({
'amount': 20.00,
'balance': 50.00,
}, [Validators.compare('amount', 'balance', CompareOption.lowerOrEquals)]);
Implementation
static Validator<dynamic> compare(
String controlName,
String compareControlName,
CompareOption compareOption,
) {
return CompareValidator(controlName, compareControlName, compareOption);
}