This middleware is written on top of busboy for koa2.x to parse request bodies and async/await. It will parse content-types with multipart/form-data, application/x-www-form-urlencoded and application/json.

##Install npm install koa-async-body

##Example

1'use strict';
2
3const Koa = require('koa');
4const KoaBody = require('koa-async-body');
5
6const koaBody = new KoaBody({
7    limits: {
8        fileSize: 1024*1024*2,
9        files: 1,
10        parts: 1000,
11    }, //You can find the options in https://github.com/mscdex/busboy
12    uploadDir: '/var/tmp', //customize the upload directory, default use require('os').tmpDir()
13    keyPath: 'foobar' //customize appending to `koa context`, default use `ctx.requestBody`
14});
15
16const app = new Koa();
17
18app.use(koaBody);
19
20app.use((ctx)=> {
21    if (ctx.requestBody) { //null if no request body
22        ctx.body = ctx.requestBody;
23    } else {
24        ctx.body = 'hello world';
25    }
26});
27
28app.listen(3000);
29//curl -v -X POST 'http://localhost:3000' --data-urlencode 'hello=world'

##Error handling

1app.on('error',(error,ctx)=>{
2    // Error('filesSizeLimit')
3    // Error('partsLimit')
4    // Error('filesLimit')
5    // Error('fieldsLimit')
6    if(error.message === 'filesSizeLimit')  {
7        ctx.status = 400;
8        ctx.body = 'filesize too big!!!'
9    }
10});