compare static method
ValidatorFunction
compare(
- String controlName,
- String compareControlName,
- CompareOption compareOption
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 ValidatorFunction compare(
String controlName,
String compareControlName,
CompareOption compareOption,
) {
return CompareValidator(controlName, compareControlName, compareOption)
.validate;
}