Mongoose - Setup and boilerplate files for Mongoose with seeds, config for multiple environment databases and a REPL

app.js

// Put this before your routes

// ----------------------------------------
// Mongoose
// ----------------------------------------
const mongoose = require('mongoose');
app.use((req, res, next) => {
  if (mongoose.connection.readyState) {
    next();
  } else {
    require('./mongo')().then(() => next());
  }
});

config\mongoose.js

module.exports = {
  development: {
    database: "YOUR_DATABASE_NAME_development",
    host: "localhost"
  },
  test: {
    database: "YOUR_DATABASE_NAME_test",
    host: "localhost"
  },
  production: {
    use_env_variable: "MONGO_URL"
  }
};

models\index.js

const mongoose = require('mongoose');
const bluebird = require('bluebird');


mongoose.Promise = bluebird;


// Disable logging while testing and seeding
if (process.env.NODE_ENV !== 'test' &&
   !process.argv[process.argv.length - 1].match(/seed/)) {
  mongoose.set('debug', true);
}


const models = {};


// Require models here
models.User = require('./user');


module.exports = models;

mongo.js

const mongoose = require('mongoose');
const env = process.env.NODE_ENV || 'development';
const config = require('./config/mongoose')[env];


module.exports = () => {
  const envUrl = process.env[config.use_env_variable];
  const localUrl = `mongodb://${ config.host }/${ config.database }`;
  const mongoUrl =  envUrl ? envUrl : localUrl;
  return mongoose.connect(mongoUrl);
};

npm\packages.sh

npm install --save mongoose mongooseeder bluebird

repl.js

const repl = require('repl').start({});
const mongoose = require('mongoose');
const models = require('./models/mongoose');


require('./mongo')().then(() => {

  // ----------------------------------------
  // Models
  // ----------------------------------------
  repl.context.models = models;
  Object.keys(models.mongoose).forEach((modelName) => {
    repl.context[modelName] = mongoose.model(modelName);
  });


  // ----------------------------------------
  // Logging
  // ----------------------------------------
  repl.context.lg = console.log;
});

seeds\index.js

const models = require('../models/');

// ----------------------------------------
// Seeds
// ----------------------------------------
const seeds = () => {};


// ----------------------------------------
// Run Seeds
// ----------------------------------------
const mongoose = require('mongoose');
const mongooseeder = require('mongooseeder');
const env = process.env.NODE_ENV || 'development';
const config = require('../config/mongoose')[env];

let mongodbUrl = config.use_env_variable ?
  process.env[config.use_env_variable] :
  `mongodb://${ config.host }/${ config.database }`;


mongooseeder.seed({
  mongodbUrl: mongodbUrl,
  models: models,
  clean: true,
  mongoose: mongoose,
  seeds: seeds
});