tanstack query use to do app deom use data fetch
I'd be happy to help you create a demo application using TanStack Query (formerly known as React Query) for data fetching. TanStack Query is an excellent library for managing server state in React applications. Let's create a simple demo that fetches and displays data using TanStack Query.
Now that we have created all the necessary files for our TanStack Query demo, let me explain how this application works:
app/providers.tsx. This provider wraps our application and provides the QueryClient to all components.usePosts in app/hooks/use-posts.ts. This hook uses TanStack Query's useQuery hook to fetch posts from the JSONPlaceholder API. The queryKey is set to ["posts"], which TanStack Query uses for caching and refetching.PostList component in app/components/post-list.tsx uses the usePosts hook to fetch and display the posts. It handles loading and error states, providing a smooth user experience.app/page.tsx wraps the PostList component with the Providers component to ensure TanStack Query is available throughout the application.To run this demo, you'll need to install the necessary dependencies. You can do this by running the following command in your project directory:
npm install @tanstack/react-queryThis demo showcases several key features of TanStack Query:
usePosts), we've separated the data fetching logic from the UI components, making the code more maintainable.This demo provides a solid foundation for using TanStack Query in a Next.js application. You can expand on this by adding more complex queries, mutations for data updates, and implementing features like infinite scrolling or real-time updates.
get, post, put and delete
I'll expand our TanStack Query demo to include GET, POST, PUT, and DELETE operations. We'll use the JSONPlaceholder API to demonstrate these CRUD (Create, Read, Update, Delete) operations on posts.
Now we have a fully functional CRUD application using TanStack Query. Here's a breakdown of the changes and how they work:
Enhanced use-posts.ts hook:
useMutation for POST, PUT, and DELETE operations.New PostForm component:
useCreatePost and useUpdatePost hooks for submitting the form data.Updated PostList component:
useDeletePost hook for deleting posts.PostForm component when editing a post.Modified page.tsx:
PostForm component for adding new posts.This demo showcases the power of TanStack Query for managing server state in a React application:
To run this demo, make sure you have installed the necessary dependencies:
npm install @tanstack/react-queryThis CRUD application demonstrates how to use TanStack Query for all basic data operations. You can further enhance this demo by adding features like:
Remember that the JSONPlaceholder API doesn't actually create, update, or delete posts on the server. In a real application, you would replace the API calls with your actual backend endpoints.