How to reuse form instance from useForm without pass to children component props?

2 Replies

Hi @tingadev. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To reuse a form instance from useForm without passing it to child components as props, you can utilize the FormProvider component from React Hook Form. This allows you to share the form context across your component tree, making the form instance accessible to any nested components without explicitly passing it down. Here's how you can do it: 1. Import necessary modules:

   import { useForm, FormProvider } from "react-hook-form";

   import { useForm, FormProvider } from "react-hook-form";

2. Create the form instance using useForm:

   const formInstance = useForm({
       mode: "onChange",
       criteriaMode: "all",
       shouldFocusError: true,
   });

   const formInstance = useForm({
       mode: "onChange",
       criteriaMode: "all",
       shouldFocusError: true,
   });

3. Wrap your form and its children with FormProvider:

   <FormProvider {...formInstance}>
       <form onSubmit={formInstance.handleSubmit(onSubmit)}>
           {/* Your form fields here */}
           <ChildComponent />
       </form>
   </FormProvider>

   <FormProvider {...formInstance}>
       <form onSubmit={formInstance.handleSubmit(onSubmit)}>
           {/* Your form fields here */}
           <ChildComponent />
       </form>
   </FormProvider>

4. Access the form instance in child components using useFormContext:

   import { useFormContext } from "react-hook-form";

   const ChildComponent = () => {
       const { register, formState: { errors } } = useFormContext();

       return (
           <div>
               <label htmlFor="title">Title</label>
               <input
                   {...register("title", { required: "Title is required" })}
                   type="text"
                   id="title"
               />
               {errors.title && <span>{errors.title.message}</span>}
           </div>
       );
   };

   import { useFormContext } from "react-hook-form";

   const ChildComponent = () => {
       const { register, formState: { errors } } = useFormContext();

       return (
           <div>
               <label htmlFor="title">Title</label>
               <input
                   {...register("title", { required: "Title is required" })}
                   type="text"
                   id="title"
               />
               {errors.title && <span>{errors.title.message}</span>}
           </div>
       );
   };

By using FormProvider and useFormContext, you can avoid prop drilling and make the form instance available to any nested components. For more detailed information, you can refer to the React Hook Form documentation (https://react-hook-form.com/docs/useform) and the Refine documentation (https://refine.dev/docs/data/hooks/use-form/#usage). This approach ensures that your form logic is centralized and easily accessible throughout your component tree. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•7d ago

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