koajs/koa

Expressive middleware for node.js using generators

Aaron

@4aron

What if I have a next in a higher middleware

Jeff Hansen

@jeffijoe

Next calls inner middleware

Which is why you have error handlers at the top

See this for an explainer: https://medium.com/netscape/mastering-koa-middleware-f0af6d327a69

Aaron

@4aron

lnkusuin

@inkusu

hi everyone. I have started to develop in Koa. I thinking I want to send mail. What do you recommend?

Jeff Hansen

@jeffijoe

@inkusu Koa has nothing to do with sending email. :)

Steven Hargrove

@hulkish

Hi, can we please retire usage of mz for koa?

specifically, koa-send?

lnkusuin

@inkusu

@jeffijoe
Thanks.
I'm still a beginner at English. I found out the Nodemailer in the node awesome page.
I think to try this library. but I am short on experience in Node. I’m used to PHP.
so, How to send email from Koa or Node Application?

Ghost

@ghost~5ac084b8d73408ce4f93eee9

Anyone know why koajs.com is missing an entire section? Specifically the Application bit

Jeff Hansen

@jeffijoe

@inkusu Try following the readme on node mailers repository?

@fjeddy ¯_(ツ)_/¯

lnkusuin

@inkusu

@jeffijoe
Ok, Thanks. I am using a Nodemailer. No problem so far.

ChrisDillinger7

@ChrisDillinger7

Hey all, huge fan of koa here.. Have been using Koa + Typescript and it's been so.. "convenient" coming from my normal way of doing things with plain js..

This may be a silly question, but is it OK to read from process.env in files that are not my main server.ts file where I instantiate my new Koa() app and .listen() ?

I'd like to use an ENV value to tell my WebApi the hostname of my OTHER server, however I dont like the idea of hardcoding that into my api source code. And my routes are organized like this: (some files/folders omitted).

--- services (folder)
------ service-name (folder)
--------- upstream-providers (folder)
--------- routes.ts <----- this is the file that needs the OTHER_SERVER_HOSTNAME value
--------- service-name-controller.ts
server.ts <------ this is the main file, and where I NORMALLY touch process.env

Chris Dillinger

@ChrisDillinger

Also, woops. Used old account by accident. Just deleted it. This is me ^

( This question is likely falling ill to the 'XY Problem', but I'm doing some exploratory learning so just taking advantage of this to learn. I likely will have other solutions to entertain when I start doing things with some other tooling related to hostnames, service discovery, etc )

Chris Dillinger

@ChrisDillinger

@sqram Regarding ur question on Dec 26th 2017: No, I did not create Dillinger.io and I'm not sure why its called that ha. Repo exists on creator of Nodesource's github ( https://github.com/joemccann )

Nikhil

@nikpat

can anyone help to pass model as a param to control

Ghost

@ghost~5bb3c7fed73408ce4faa2518

i want to create a benchmark to compare between nodejs frameworks, and i need your help (uncompromising)
https://github.com/hyron-group/benchmark

Ivan

@IvanYakimov

Hi everyone! Could you please help me? I am looking for an idiomatic way to use locales in koa js applications.

pratitid09

@pratitid09

hi everyone, how to save a value globally in Koa.js and change the value as and when required ?

Saad Quadri

@saadq

@pratitid09 I think context state (i.e. ctx.state) might be what you're looking for?

https://koajs.com/#ctx-state

Mike Hamilton

@gorbypark

i have an authentication middleware i'm calling from koa-router router.get("/", roleAdmin, async (ctx, next) => { ... } and I'd like to pass actual roles into roleAdmin, like roleAdmin(['admin', 'user']) or something like that, but I'm not quite sure how

Jame

@jamemackson

if you make your roleAdmin method return a function it should just work.

Mike Hamilton

@gorbypark

hmm, i'm not sure how i can do that, as my rolesAdmin method actually decodes the jwt

and sets ctx.state

if token is bad

Jame

@jamemackson

you just convert it to be a higher order function.

Jame

@jamemackson

so the top level function takes in and stores your parameter and then when the returned function is executed, you can have logic there that can operate how you want based on that variable(s)

Aaron

@4aron

from within a handler (ctx, next) is it OK to add a property to ctx for it to be available through subsequent middlewares?

I understand from app = new Koa(), use app.context.foo

But what about inside one of my middlewares?

Jeff Hansen

@jeffijoe

@gorbypark const roleAdmin => (permissions) => (ctx, next) => ...

@4aron Sure, you can set whatever you want on the context, but I think thats what ctx.state is for, see above

Jack c

@soydepr

Totally ne2 to node ane frameworks i was able to manage get and post but having issues with delete for delete do i use koa-route or koa-router delete id

How would i delete an id in router.del or router.delete

Jack c

@soydepr

Can someone clarify to me the status of koajs is it alive, discontinued? Before i emerge more would like to know as i am strulling with delete route

Mingsterism

@mingsterism

hi, how come my cookies are not being set in the response even through i set it with ctx.cookies.set for both get and post requests
my code is in link https://hastebin.com/odoweyunus.js

this was my console.logs

GET
------------ RESPONSE -----------
{ status: 404,
  message: 'Not Found',
  header: [Object: null prototype] {},
  body: undefined }
------------ REQUEST -----------
{ method: 'GET',
  url: '/graphql',
  header:
   { host: 'localhost:3000',
     connection: 'keep-alive',
     'cache-control': 'max-age=0',
     'upgrade-insecure-requests': '1',
     'user-agent':
      'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36',
     accept:
      'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
     'accept-encoding': 'gzip, deflate, br',
     'accept-language': 'en-US,en;q=0.9',
     cookie:
      'name=tandilo; name.sig=nyDQgiinV1lyOZGu9s7xHcE_MYnQxBpAVWmp1MR65i0' } }
###########################
POST
------------ RESPONSE -----------
{ status: 404,
  message: 'Not Found',
  header: [Object: null prototype] {},
  body: undefined }
------------ REQUEST -----------
{ method: 'POST',
  url: '/graphql',
  header:
   { host: 'localhost:3000',
     connection: 'keep-alive',
     'content-length': '1468',
     accept: '*/*',
     origin: 'http://localhost:3000',
     'x-apollo-tracing': '1',
     'user-agent':
      'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36',
     'content-type': 'application/json',
     referer: 'http://localhost:3000/graphql',
     'accept-encoding': 'gzip, deflate, br',
     'accept-language': 'en-US,en;q=0.9' } }
###########################
APOLLO SERVER -------
{ ctx:
   { request: { method: 'POST', url: '/graphql', header: [Object] },
     response: { status: 404, message: 'Not Found', header: [Object] },
     app: { subdomainOffset: 2, proxy: false, env: 'development' },
     originalUrl: '/graphql',
     req: '<original node req>',
     res: '<original node res>',
     socket: '<original node socket>' } }
=====================

Jack c

@soydepr

does anyone in relaity know that status of this framework !!!! dead or alive

Saad Quadri

@saadq

@soydepr Not sure what you mean by that... Koa is a very light wrapper around Node's HTTP which basically comes with no middleware bundled with it so it is pretty feature-complete

There aren't really updates to it because of that

Most of the stuff you use with it will be 3rd-party middleware

Jack c

@soydepr

@saadq i see thanks

Ghost

@ghost~5bb3c7fed73408ce4faa2518

I recently developed a framework is Hyron, which helps to save more backend application development time. Serving for large and complex project development, with high expansion needs. Looking forward to receiving suggestions from everyone
https://docs.hyron.org/

demo.js

module.exports = class {
    static requestConfig(){
        return {
            sayHello : "get"
        }
    }

    sayHello(name){
        return "hello world !"+name;
    }
}

app.json

{
    "base_url" : "http://localhost:3000",
    "services" : {
        "demo" : "./demo.js"
    }
}

bash

$ hyron start

result

> GET http://localhost:3000/demo/say-hello?name=arg

Eyal Perry

@_eyalPerry_twitter

I have a koa newcommer question, which might sound silly :)
does a koa middleware have to call await next()?

i.e.:
https://gist.github.com/EyalPerry/6fab361cfd6fdf704e7cd5a43c0ede7e

Jame

@jamemackson

@_eyalPerry_twitter your middleware doesn’t HAVE to call that, but if you want to do something on the way back up the middleware stack, you’ll want to call that and put the “after” logic after the await next();

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Repo info

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demo.js

app.json

> GET http://localhost:3000/demo/say-hello?name=arg