I'm trying to make a form with two fields using react hook form where the required value of the text field depends on the value of the select drop down.
Here is my code:
const { handleSubmit, control, errors } = useForm();
const [isPickupPoint, togglePickupPoint] = useState(false);
const handleDestinationTypeChange: EventFunction = ([selected]) => {
togglePickupPoint(selected.value === "PICKUP_POINT");
return selected;
};
<Grid item xs={6}>
<InputLabel>Destination type</InputLabel>
<Controller
as={Select}
name="destinationType"
control={control}
options={[
{ label: "Pickup point", value: "PICKUP_POINT" },
{ label: "Shop", value: "SHOP" },
]}
rules={{ required: true }}
onChange={handleDestinationTypeChange}
/>
{errors.destinationType && (
<ErrorLabel>This field is required</ErrorLabel>
)}
</Grid>
<Grid item xs={6}>
<Controller
as={
<TextField
label="Pickup Point ID"
fullWidth={true}
disabled={!isPickupPoint}
/>
}
control={control}
name="pickupPointId"
rules={{ required: isPickupPoint }}
/>
{errors.pickupPointId && (
<ErrorLabel>This field is required</ErrorLabel>
)}
</Grid>
<Grid item xs={12}>
<Button
onClick={onSubmit}
variant={"contained"}
color={"primary"}
type="submit"
>
Save
</Button>
</Grid>
The isPickupPoint
flag changes properly because the disabled
prop of the textfield
works fine. Only when the PICKUP_POINT option is selected the text field is active. But the required prop is not working, it is always false. When I try submitting the form when its empty the destinationType
error label appears, but when I try to submit the form with the PICKUP_POINT option and empty pickupPointId
field it passes with no errors.
How can I make this dynamic required prop work?