How to use the useMutation hook for updating data in Next.js



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In Next.js, you can use the useMutation hook provided by a library like react-query or swr. Here, I'll show you an example using react-query. Make sure you have react-query installed in your project:

bash
npm install react-query
# or
yarn add react-query

Now, you can use the useMutation hook to handle data mutation, such as updating data. Here's an example:

  1. Import necessary modules and set up the react-query client:
jsx
// pages/_app.js

import { QueryClient, QueryClientProvider } from 'react-query';
import { ReactQueryDevtools } from 'react-query/devtools';

const queryClient = new QueryClient();

function MyApp({ Component, pageProps }) {
  return (
    <QueryClientProvider client={queryClient}>
      <Component {...pageProps} />
      <ReactQueryDevtools />
    </QueryClientProvider>
  );
}

export default MyApp;
  1. Create a component that uses the useMutation hook for updating data:
jsx
// components/UpdateDataForm.js

import { useMutation } from 'react-query';

const updateData = async (newData) => {
  // Perform your API call or data update logic here
  const response = await fetch('/api/update-data', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify(newData),
  });

  if (!response.ok) {
    throw new Error('Update failed');
  }

  return response.json();
};

const UpdateDataForm = ({ initialData }) => {
  const mutation = useMutation(updateData);

  const handleSubmit = async (e) => {
    e.preventDefault();
    const formData = new FormData(e.target);
    const newData = Object.fromEntries(formData.entries());

    try {
      await mutation.mutateAsync(newData);
      // Data updated successfully
    } catch (error) {
      console.error('Update failed:', error.message);
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      {/* Your form inputs go here */}
      <button type="submit" disabled={mutation.isLoading}>
        {mutation.isLoading ? 'Updating...' : 'Update Data'}
      </button>
    </form>
  );
};

export default UpdateDataForm;
  1. Use the UpdateDataForm component in your page:
jsx
// pages/index.js

import UpdateDataForm from '../components/UpdateDataForm';

const Home = () => {
  return (
    <div>
      <h1>Next.js with useMutation</h1>
      <UpdateDataForm />
    </div>
  );
};

export default Home;

In this example, the useMutation hook from react-query is used to handle the asynchronous update of data. The mutation.mutateAsync function is called when the form is submitted, and it automatically handles loading states, error handling, and updating the cache.

Remember to adapt this example to your specific use case and API endpoints. The /api/update-data endpoint is just a placeholder; replace it with your actual API endpoint for updating data.



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