17. Next.js Tutorial (4). API Routes

 1. Create an API Route

Source: https://nextjs.org/learn/basics/api-routes/creating-api-routes

The files must be in the pages/api folder. In this example (pages/api/hello.ts), that can be accessed by http://localhost:3000/api/hello and will return {"text":"Hello"}

export default function handler(req, res) {
  res.status(200).json({ text: 'Hello' });
}

Note: Don't fetch an api route from getStaticprops or getStaticPaths

You can save to a DB some info from a form:

export default function handler(req, res) {
  const email = req.body.email;
  // Then save email to your database, etc...
}




Comentarios

Publicar un comentario

Entradas populares de este blog

14. Next.js Tutorial (1)

 1. Introduction. (No Next.js) Basic example. Load React, React-Dom, and Bable from unpkg.com !-- index . html --> < html > < body > < div id = "app" > </ div > <!-- React--> < script src = "https://unpkg.com/react@17/umd/react.development.js" > </ script > <!-- React-DOM --> < script src = "https://unpkg.com/react-dom@17/umd/react-dom.development.js" > </ script > <!-- Babel Script --> < script src = "https://unpkg.com/@babel/standalone/babel.min.js" > </ script > <!--script type="text/javascript"--> < script type = "text/jsx" > const app = document . getElementById ( ' app ' ) ; ReactDOM . render ( < h1 > Develop . Preview . Ship . < / h1 > , app ) ; </ script > </ body > </ html > Three dependencies are enclo...
Leer más

15. Next.js Tutorial (2). Fetching data. Async functions getStaticProps, getServerSideProps, getStaticPaths

Imagen
 1. Fetching data at the beginning of the application In the index.tsx (index.ts) you can use one of these 2 asyncfunctions: getStaticProps()  which works in client-side pre-rendering and the content is reused. So only one call is made, and it is made at build time . This is quicker. getServerSideProps()  that works on the server-side rendering and every call can produce different results as data changes. Use only if you need to render a page whose data must be fetched at request time such as authorization. //export async function getStaticProps() { / / only on pre-rendering export async function getServerSideProps ( ) { // only on server side rendering const allPostsData = getSortedPostsData ( ) ; return { props : { allPostsData , } , } ; } export default function Home ( { allPostsData } : { allPostsData : PostData [ ] } ) { return ( < Layout home > . . . . . . . Do not use API route inside getServ...
Leer más

16. Next.js Tutorial (3). Dynamic Routes. Async functions getStaticPaths and getStaticProps

1. Dynamic page Source:  https://nextjs.org/learn/basics/dynamic-routes/implement-getstaticpaths Source:  https://nextjs.org/learn/basics/dynamic-routes/implement-getstaticprops 1. Create a page at /pages/posts/[id].js where the brackets "[]" means a dynamic page 2. This file must contain: A React component to render this page getStaticPaths  async function that returns an array of possible values of id. And has the fallback property. This function is called at build time and needs to be exported ( export async function getStaticPaths() ) getStaticProps  async which fetches necessary data for the post with the id; and needs to be exported too ( export async function  getStaticProps ()  ) The fallback property of the  getStaticPaths  means: If fallback is false , then any paths not returned by getStaticPaths will result in a 404 page . If fallback is true , it will serve the paths generated at build time. If it was not generated at buil...
Leer más