setAsyncValidators method
- List<
AsyncValidatorFunction> validators, { - bool autoValidate = false,
- bool updateParent = true,
- bool emitEvent = true,
Sets the async validators
that are active on this control. Calling this
overwrites any existing async validators.
If autoValidate
is true
then the status of the control is recalculated
after setting the new validators
. If autoValidate
is false
(default)
you must call updateValueAndValidity(), or assign a new value to the
control for the new validation to take effect.
When updateParent
is true
or not supplied (the default) each change
affects this control and its parent, otherwise only affects to this
control. This argument is only taking into account if autoValidate
is
equals to true
.
When emitEvent
is true or not supplied (the default), both the
statusChanges and valueChanges emit events with the latest status
and value when the control is reset. When false, no events are emitted.
This argument is only taking into account if autoValidate
is equals to
true
.
Implementation
void setAsyncValidators(
List<AsyncValidatorFunction> validators, {
bool autoValidate = false,
bool updateParent = true,
bool emitEvent = true,
}) {
clearAsyncValidators();
_asyncValidators.addAll(validators);
if (autoValidate) {
updateValueAndValidity(updateParent: updateParent, emitEvent: emitEvent);
}
}