absent-sapphire•9mo ago

form default value

with a code like the following, how can I set a value programmatically ? <FormControl fullWidth> <FormLabel requires > {t( "order-items.fields.customer", )} </FormLabel> <Controller control={control} name="customer" rules={{ required: t("errors.required") + ': ' + t("order-items.fields.customer"), }} defaultValue={null as any} render={({ field }) => ( <Autocomplete size="small" {...customersdata} {...field} onChange={(, value) => { field.onChange(value); }} getOptionLabel={(item) => { return item.customer_legal_name ? item.customer_legal_name : ""; }} isOptionEqualToValue={( option, value, ) => value === undefined || option?.id?.toString() === ( value?.id ?? value )?.toString() } renderInput={(params) => ( <TextField {...params} variant="outlined" error={ !!errors.customer ?.message } required /> )} /> )} /> </FormControl>

11 Replies

kapa.ai•9mo ago

Hi @dannywhiteagile. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To programmatically set a value in a form field managed by react-hook-form, you can use the setValue function provided by the useForm hook. However, the provided code does not include the setValue function, so I can't provide a specific example based on the given code. Here's a general example of how you can use the setValue function:

const { control, setValue } = useForm();

// ...

setValue("customer", yourValue);

const { control, setValue } = useForm();

// ...

setValue("customer", yourValue);

In this example, setValue is used to set the value of the customer field to yourValue. You would replace yourValue with the actual value you want to set. Please note that you need to call setValue after the form has been rendered and the fields have been registered. If you call setValue too early (for example, before the form fields have been registered), it won't have any effect. For more information, you can refer to the React Hook Form documentation (https://react-hook-form.com/api/useform/setvalue). Please note that the provided extracts do not contain specific information about setting values programmatically in the context of Refine and Ant Design. The information provided here is based on the general usage of react-hook-form. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•9mo ago

<@1129002557419827210> kapa.ai is still learning and improving, please let us know how it did by reacting below

absent-sapphire•9mo ago

@kapa.ai how to trigger a change event on the associated element?

kapa.ai•9mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To trigger a change event on an associated element in a form managed by react-hook-form, you can call the onChange function provided by the field object. This function is used to notify the form that the field's value has changed. Here's an example based on the code you provided:

<Controller
    control={control}
    name="customer"
    // ...
    render={({ field }) => (
        <Autocomplete
            // ...
            onChange={(_, value) => {
                field.onChange(value);
                // Your additional logic here
            }}
            // ...
        />
    )}
/>

<Controller
    control={control}
    name="customer"
    // ...
    render={({ field }) => (
        <Autocomplete
            // ...
            onChange={(_, value) => {
                field.onChange(value);
                // Your additional logic here
            }}
            // ...
        />
    )}
/>

In this example, the onChange function is called whenever the value of the Autocomplete component changes. The new value is passed to field.onChange, which updates the form state and triggers any side effects (like validation) that depend on the field's value. Please note that the onChange function expects the new value as its argument. If your onChange handler receives an event object (like in a native HTML input), you should pass event.target.value to field.onChange. For more information, you can refer to the React Hook Form documentation (https://react-hook-form.com/api/usecontroller/controller). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•9mo ago

<@1129002557419827210> kapa.ai is still learning and improving, please let us know how it did by reacting below

absent-sapphire•9mo ago

@kapa.ai i need to trigger a change event programmatically

kapa.ai•9mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To programmatically trigger a change event, you can call the onChange function provided by the field object from the Controller component in react-hook-form. However, you need to ensure that the onChange function is called with the correct argument, which is the new value of the field. Here's a general example:

const { control } = useForm();

// ...

<Controller
    control={control}
    name="customer"
    render={({ field }) => (
        <YourComponent
            {...field}
            onChange={(newValue) => {
                field.onChange(newValue);
                // Your additional logic here
            }}
        />
    )}
/>

const { control } = useForm();

// ...

<Controller
    control={control}
    name="customer"
    render={({ field }) => (
        <YourComponent
            {...field}
            onChange={(newValue) => {
                field.onChange(newValue);
                // Your additional logic here
            }}
        />
    )}
/>

In this example, field.onChange is called with newValue as its argument. This will update the form state and trigger any side effects (like validation) that depend on the field's value. Please note that the onChange function expects the new value as its argument. If your onChange handler receives an event object (like in a native HTML input), you should pass event.target.value to field.onChange. For more information, you can refer to the React Hook Form documentation (https://react-hook-form.com/api/usecontroller/controller). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•9mo ago

<@1129002557419827210> kapa.ai is still learning and improving, please let us know how it did by reacting below

absent-sapphire•9mo ago

@kapa.ai i need something like form.customer.change()

kapa.ai•9mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To programmatically trigger a change event in a form field, you can use the setValue function provided by the useForm hook in react-hook-form. This function not only allows you to set the value of a field, but it also triggers a re-render and runs the validation rules for the field. Here's a general example:

const { control, setValue } = useForm();

// ...

setValue("customer", newValue, { shouldValidate: true });

const { control, setValue } = useForm();

// ...

setValue("customer", newValue, { shouldValidate: true });

In this example, setValue is used to set the value of the customer field to newValue and trigger a re-render and validation. You would replace newValue with the actual value you want to set. Please note that you need to call setValue after the form has been rendered and the fields have been registered. If you call setValue too early (for example, before the form fields have been registered), it won't have any effect. For more information, you can refer to the React Hook Form documentation (https://react-hook-form.com/api/useform/setvalue). Please note that the provided extracts do not contain specific information about triggering change events programmatically in the context of Refine and Ant Design. The information provided here is based on the general usage of react-hook-form. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•9mo ago

<@1129002557419827210> kapa.ai is still learning and improving, please let us know how it did by reacting below