astepback

koa middleware that stores exactly one previous page for further redirection.

Install

npm install astepback

dependencies

Koa 2(Node >= 0.12.0)
koa-session

Configuration

var asb = require('astepback');
var koa = require('koa');
var session = require('koa-session');
var bodyParser = require('koa-bodyparser');

var server = koa();
server.use(bodyParser());
server.use(session(server));
server.keys = ['heavenduke'];
server.use(asb());

Usage

server.get('/previous', function *(next) {
    // store current url into asb object.
    this.asb = this.request.url;
    this.body = {title: "previous"};
});

server.get('/current', function *(next) {
    // redirect to stored previous path.
    this.redirect(this.asb);
});

Notice

The default value of this.asb is / which is usually the default path of a website, it also use session['koa-asb'] as default storage, you can reset the default path and session key through the following method:

server.use(asb({
    key: "foo",         // session storage key
    defaultPath: "/foo" // default redirection path
}));

License

MIT