koajs/examples/ multipart
mkdir testKoa
app.on('ready', function() {
app.commandLine.appendSwitch('js-flags', '--harmony');
{
"name": "my-test-ecma6",
"productName": "Atom Shell Default App",
"version": "0.1.0",
"main": "main.js",
"devDependencies": {
"koa":"*",
"co-fs":"*",
"co-busboy":"*",
"save-to":"*"
}
}
<html>
<body>
<form action method="POST">
<input type="">
</form>
<script>
/**
* Multipart example downloading all the files to disk using co-busboy.
* If all you want is to download the files to a temporary folder,
* just use https://github.com/cojs/multipart instead of copying this code
* as it handles file descriptor limits whereas this does not.
*/
var os = require('os');
var path = require('path');
var koa = require('koa');
var fs = require('co-fs');
var parse = require('co-busboy');
var saveTo = require('save-to');
var app = module.exports = koa();
app.use(function *(){
// parse the multipart body
var parts = parse(this, {
autoFields: true // saves the fields to parts.field(s)
});
// create a temporary folder to store files
var tmpdir = path.join(os.tmpdir(), uid());
// make the temporary directory
yield fs.mkdir(tmpdir);
// list of all the files
var files = [];
var file;
// yield each part as a stream
var part;
while (part = yield parts) {
// filename for this part
files.push(file = path.join(tmpdir, part.filename));
// save the file
yield saveTo(part, file);
}
// return all the filenames as an array
// after all the files have finished downloading
this.body = files;
})
if (!module.parent) app.listen(3000);
function uid() {
return Math.random().toString(36).slice(2);
}
</script>
</body>
</html>
atom testKoa
