Access "app" variable inside of ExpressJS/ConnectJS middleware?

Question

This may not me be the right approach, but I want to conditionally add an object/parameter to the app variable inside of an expressJS/connectjS middleware call.

Since this function is a callback, what's the standard/best way to access app from inside a middleware call?

  //app.js
  var myMiddleware = require('./lib/mymiddleware.js');
  ...
  app.configure( function(){
    app.use( myMiddleware.func() );
    ...
  }

  if( 'object' !== typeof app.myObject ){
    cry( 'about it' );
  } 


  //mymiddleware.js
  module.exports.func = function( ){
    return function( req, res, next ){
       //append app object
       //app.myObject = {}
       next();
    }
  };

Note, this is not something for locals or settings to later be rendered, but something that will be used in routes and sockets later down the execution chain.

Answer 1

Request objects have an app field. Simply use req.app to access the app variable.