How to intercept node.js express request
You can do what you need in a couple of ways.
This will place a middleware that will be used before hitting the router. Make sure the router is added with app.use() after. Middleware order is important.
app.use(function(req, res, next) { // Put some preprocessing here. next();});app.use(app.router);You can also use a route middleware.
var someFunction = function(req, res, next) { // Put the preprocessing here. next();};app.post("/api/v1/client", someFunction, Client.create);This will do a preprocessing step for that route.
Note: Make sure your app.use() invokes are before your route definitions. Defining a route automatically adds app.router to the middleware chain, which may put it ahead of the user defined middleware.