Empty GET response on requesting JSON file's content | koa2 - json

Question

I am a new to koa2, and I trying to GET the contents of a JSON file with koa2
app.use( async ( ctx ) => {
let url = ctx.request.url;
if (url == "list") {
let res = ctx.request.get('http://domain/hello.json');
ctx.body = res.body;
}
})
The JSON file hello.json looks like the following:
{"da": "1212", "dad": "12addsf12"}
I want the route /list to return the contents of hello.json, however, the response is empty. What do I do?
Update:
Change the following lines of code:
let res = ctx.request.get('http://domain/hello.json');
ctx.body = res.body;
to:
let res = ctx.get('http://domain/hello.json');
ctx.body = res;
You should get the content now.

Answer 1

Koa by itself does not support routing, only middleware, you need to have a router middleware for that, try koa-router.
Your app would look something like
const route = require('koa-route')
app.use(route.get('/list', ctx => {
// Route handling logic
});
Also note that ctx.get is an alias for ctx.request.get which returns header information.

Answer 2

This may not be Koa's way of doing things, but this is what I tried and worked for me (complete code for noobs like me):
// jshint ignore: start
const koa2 = require("koa2");
const router = require('koa-simple-router');
const app = new koa2();
const request = require('request-promise-native');
// response
app.use(router(_ => {
_.get('/list', async (ctx) => {
const options = {
method: 'GET',
uri: 'http://www.mocky.io/v2/5af077a1310000540096c672'
}
await request(options, function (error, response, body) {
// I am leaving out error handling on purpose,
// for brevity's sake. You must in your code.
ctx.body = body;
})
});
}));
app.listen(3000);
And, like what J Pichardo's answer points out, Koa by itself does not support routing. You need to use some routing middleware.