How to redirect some URL conditionally in the koa 2

koa koa2
user3552178 picture user3552178 · Sep 12, 2017 · Viewed 10.5k times · Source

This is what i'm thinking, pseudo code. 

const myRedirect = (routePath) => {
    newUrl = routePath;
    if (matches condition)
        newUrl = do_some_modification(routePath);       
    return next(newUrl); 
}

const myFunc = (routePath, myRedirect) => (newUrl, middleware) => {
    return (ctx, newUrl, next) => {
        return middleware(ctx, newUrl, next);
    }
};

How to modify it to make it work please ?

Answer

Valera picture Valera · Sep 18, 2017 
const route = async function(ctx, next){
    if(shouldRedirect){
        ctx.redirect('/redirect-url'); // redirect to another page
        return;
    }

    ctx.someData = getSomeData(); // ctx.someData will be available in the next middleware
    await next(); // go to next middleware
}

Related questions

Koa router: How to get query string params?

I'm using koa-router. How can I get the request's query string params? This is the best I managed to write: import koaRouter from 'koa-router'; const router = koaRouter({ prefix: '/courses' }); router.get('/', async (ctx) => { console.log(ctx.…

Read More
forEach using generators in Node.js

I'm using Koa.js framework and Mongoose.js module. Normally to get a result from MongoDB I code like this: var res = yield db.collection.findOne({id: 'my-id-here'}).exec(); But I need to execute this line for every element of …

Read More
Display a static html file with koa.js

What I want to do is serve the index.html file when the index route (i.e. localhost:3000) is called. I use koa-router for routing, so my route looks like this: app.all("/", function * (next){ //Send the file here }); I …

Read More