How can I share mongoose models between 2 apps?

Question

I have 2 apps, each in a different folder and they need to share the same models.

I want to symlink the models folder from app A to a models folder in app B.

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Answer 1

My approach to sharing Mongoose models is to pass the mongoose object in as an argument to the shared module that defines the schemas and creates the models. So the file with the shared schemas/models looks like this:

module.exports = function(mongoose) {

    var packageSchema = new mongoose.Schema({
        title:          { type: String, required: true },
        description:    String
    });

    mongoose.model('Package', packageSchema, 'packages');
};

and then each project requires them in like this:

var mongoose = require('mongoose');
var mongo_url = process.env.MONGO_CONNECTION;
mongoose.Promise = global.Promise;

mongoose.connect(mongo_url, connectOpts);
require('../../../shared/models/packages')(mongoose);