Middleware #

Middleware is special field of config.application. Here can set different express.js middleware and create own.

Set middleware #

Can three possibilities to set middleware:

• By object
• By array
• By function

Notes:

1. in by object and by array key is name of npm module.
2. in by function key can be any.

Order of middleware load is natural (first key - first load, second key - second load, etc)

by object #

For middleware where options is one object. For example, connect-multiparty:

{
    application: {
        middleware: {
            'connect-multiparty': {
                maxFilesSize: 10 * 1024 * 1024 // '10mb'
            }
        }
    }
}

by array #

For middleware where options is several agruments. For example, serve-static:

{
    application: {
        middleware: {
            'serve-static': ['public/', { extensions: ['js', 'css'] }]
        }
    }
}

by function #

"Raw" set of middleware. Possibility to create own middleware or attach any external middleware:

var session = require('express-session'),
    connect_mongo = require('connect-mongo')(session);

{
    application: {
        middleware: {
            'own-middleware': function(app, express) {
                app.use(function(request, response, next) {
                    // do something
                    next();
                });
            },
            'attach-session': function(app) {
                app.use(session({
                    resave: false,
                    saveUninitialized: true,
                    cookie: {},

                    store: new connect_mongo({
                        db: 'database',
                        host: 'localhost',
                        port: 27017
                    })
                }));
            }
        }
    }
}