Continuing from my last adventures with promises and express.js, it turns out I can have what I want. Sort of. Behold the promise handler:
module.exports = function(inner) {
this.handle = function(req, res) {
res.promise(inner.handle(req));
};
};
So now my express handlers look like this:
module.exports = function() {
this.handle = function(req) {
return somethingThatReturnsAPromise();
};
};
And you would wire it all together like this:
var app = express();
app.use(promiseMiddleware());
app.get("/foo", function(req, res) {
var handler = new PromiseHandler(new FooHandler());
return handler.handle(req, res);
});
(As a side-note, I’m a huge fan of the Russian doll model of composing behaviour of handlers)
