exress validator about kraken-js

[lmarkus]

Hi Vivian,
Take a look at
https://github.com/lensam69/Kraken_Example_Custom_Middleware and
https://github.com/lmarkus/Kraken_Example_Configuration
for inspiration.

There are three things you want to do:

1. Add any custom configuration to ./config/middleware.json under a key which you will retrieve later (eg express-valitador)
2. In your application entry point (most likely ./index.js) you should require it var expressValidator = require('express-validator').
3. During the configuration hook, you can create the middleware function, and pass the configuration (if any) (I'd store it in the same variable for convenience):

app.configure = function configure(nconf, next) {
    // Fired when an app configures itself
    expressValidator = expressValidator(nconf.get('express-validator'));
    next(null);
};

1. Tell the application to use it within the requestBeforeRoute hook. This hook is invoked only once, after the base middleware for Kraken has been set up.

app.requestBeforeRoute = function requestBeforeRoute(server) {
    server.use(expressValidator);
};

NOTE: I read in the express-validator site that it needs to be used right after using the bodyParser middleware (Which we don't use, we use multipart). I don't know if this will affect you.