sharing db connection across entire app in mongoose

Question

With the latest mongoose update, you can no longer user models the way I\'ve been doing. I need to share the same db connection across my entire app.

https://github.com/

Answer 1

Option 1: Use a shared object

My model code looks similar, but instead of repeatedly requiring the modules I just require them once when the application starts and then assign the results to a shared object. For example if you are using an express app you could just so something like app.locals.models.User = require('./models/user');. Then anything with access to the app can see your models without needing a require.

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Option 2: Ensure a single modification in the exported function

You can define your user module like so:

var mongoose = require('mongoose');

var userSchema = new mongoose.Schema({name: String});

var User = null;

module.exports = function(db) {
  if (db && User === null) {
    User = db.model('User', userSchema);
  }
  return User;
};

When you start your application you simply need to: require('./models/user')(db). Subsequent requires by other modules in your application can drop the db paramater, as User will only be set once.