interface Validator {
validate(c: AbstractControl) : ValidationErrors|
null
registerOnValidatorChange(fn: () => void) : void
}
An interface that can be implemented by classes that can act as validators.
@Directive({
selector: '[custom-validator]',
providers: [{provide: NG_VALIDATORS, useExisting: CustomValidatorDirective, multi: true}]
})
class CustomValidatorDirective implements Validator {
validate(c: Control): {[key: string]: any} {
return {"custom": true};
}
}
validate(c: AbstractControl) : ValidationErrors|
null
registerOnValidatorChange(fn: () => void) : void
exported from forms/index, defined in forms/src/directives/validators.ts
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Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/docs/ts/latest/api/forms/index/Validator-interface.html