updateModel method
void
updateModel(
- ViewDataType? viewValue
Updates the control with the provided value.
Marks the control as dirty if the viewValue
is different from the
control value.
Throws ValueAccessorException if no control is registered with this value accessor.
See also registerControl.
Implementation
void updateModel(ViewDataType? viewValue) {
if (_control == null) {
throw ValueAccessorException(
'No control registered. Call [ControlValueAccessor.registerControl] to register a control first.');
}
_viewToModelChange = true;
final modelValue = viewToModelValue(viewValue);
if (_control?.value != modelValue) {
_control?.markAsDirty(emitEvent: false);
_control?.updateValue(modelValue);
} else {
_viewToModelChange = false;
}
}