nextjs-middleware-api
v2.0.6
Published
simple nextjs middleware for api routes
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nextjs-middleware-api
simple nextjs middleware for api routes
Description
nextjs-middleware-api
gives you a simple way to add custom middleware functions or using npm middleware
like cors
and express-rate-limit
and cookie-parser
and ...more
Install
$ npm install nextjs-middleware-api
Usage with custom middleware
Simple usage with nextjs api route.
/pages/api/account
route example
// import package
import NextMiddleware from 'nextjs-middleware-api'
// import your cutom middleware
import Auth from './customMiddleware/auth'
// add your custom middleware and callback function
export default NextMiddleware(Auth, (req, res) => {
res.send("Hello mr " + req.username)
})
/middleware/auth.js
custom middleware file
// you can catch [req, res, next] to handle your custom middleware function
function Auth(req, res, next) {
// 1- get token from [req]
// 2- check token validation
// 3- return response
// dummy example
// if token is valid return next() function
if (1 == 1)
{
// do your work
req.username = "John Doe";
// after you finish just return next() to continue to the next middleware if exist or your final callback function
next();
}
else
{
// if token not valid for some reason return your custom error message with custom status code
res.status(404).send({ success: false, message: 'username or password is wrong' });
}
}
export default Auth;
Usage with npm middleware packages like cors
you can add cors to middleware by just pass cors
like this
// import package
import NextMiddleware from 'nextjs-middleware-api'
// import your cutom middleware
import Auth from './customMiddleware/auth'
import Validation from './customMiddleware/validation'
// import third party packages like cors
import cors from 'cors'
// using the middleware like
const usingCors = cors({
origin: 'http://example.com', // add your domain or use "*" to accept all origins
methods: "GET,HEAD,PUT,PATCH,POST,DELETE",
optionsSuccessStatus: 200 // some legacy browsers (IE11, various SmartTVs) choke on 204
// ... more cors options
})
export default NextMiddleware(usingCors, Auth, Validation, (req, res) => {
res.send("Hello mr " + req.username)
})
you can add more packages with the same way
How to allow only selected methods
use can allow methods like POST
or GET
or Delete
or any other type of method by just pass allowedMethods
inside object
like this
// import package
import NextMiddleware from 'nextjs-middleware-api'
// import your cutom middleware
import Auth from './customMiddleware/auth'
import Validation from './customMiddleware/validation'
import IsAdmin from './customMiddleware/isAdmin'
var customOptions = {
allowedMethods: ["POST", "get", "DelEtE"], // not case sensitive
}
export default NextMiddleware(customOptions, Auth, Validation, IsAdmin, (req, res) => {
if (req.method == "POST")
{
res.send("Request POST method")
}
else if (req.method == "GET")
{
res.send("Request GET method")
}
// final else will be [DELETE] method because there is no fourth option in [allowedMethods] array
else
{
res.send("Request DELETE method")
}
})
allowedMethods
must be an array[] of sting
allowedMethods
not case sensitive you can type ["POST"]
or ["post"]
or ["PoSt"]
allowedMethods
will return 404 page not found
for methods not included in array