mongoose-data-seeder

This package is refactored from origianl Sam Verschueren's mongoose-seeder package, I only did minor code change to make it as ES6 class and working with mongoose 5.x.

I need do this refactoring due to an internal MERN project, I publish this package hoping it might be useful for someone who also need seed a MongoDB for his or her project using Node and MongoDB with Mongoose.

Install

$ npm install mongoose-data-seeder

How to use

Start a local mongo instance using docker and create a 'test' db

$ docker run -d --name local-mongo -p 27017:27017 -e MONGO_INITDB_ROOT_USERNAME=mongoadmin -e MONGO_INITDB_ROOT_PASSWORD=welcome -e MONGO_INITDB_DATABASE=test mongo:3.6

Create seed data project

$ npm init

Install required packages

$ npm install --save mongo mongoose mongoose-data-seeder commander

Prepare seed data "data.json" including document referencing another document

{
  "teams": {
    "_model": "teams",
    "teamA": {
      "name": "Team A",
      "company": "Startup"
    }
  },
  "users": {
    "_model": "users",
    "user1": {
      "firstName": "Joe",
      "name": "User One",
      "email": "[email protected]",
      "teamId": "->teams.teamA._id"
    }
  }
}

If you want to know more about loading documents that have a reference to another document, please see the original Sam Verschueren's mongoose-seeder project

Create test-seeder.js using 'mongoose-data-seeder' to load seed data into Mongo database

const command = require('commander')
const mongoose = require('mongoose')

const MongooseDataSeeder = require('mongoose-data-seeder')

const dbUrl = 'mongodb://mongoadmin:welcome@localhost:27017/?authMechanism=DEFAULT&authSource=admin'

// create or import mongoose schema
const TeamSchema = mongoose.Schema({
  _id: mongoose.Schema.Types.ObjectId,
  name: {type: String, required: true},
  company: {type: String},
})

mongoose.model('teams', TeamSchema)

const UserSchema = mongoose.Schema({
  _id: mongoose.Schema.Types.ObjectId,
  firstName: {type: String, required: true},
  name: {type: String, required: true},
  fullName: {type: String},
  email: {type: String, required: true},
  birthday: {type: Date},
  teamId: {type: mongoose.Schema.Types.ObjectId, ref: 'teams'}
})

mongoose.model('users', UserSchema)

command
  .version('1.0.0')
  .option('-d --data [jsonfile]', 'seed data in json file')
  .parse(process.argv)

const jsonDataFile = command.data ? command.data : './data.json'

// connect to MongoDB
mongoose.connect(dbUrl, {dbName: 'test', autoIndex: false}, function(err){
  if (err) {
    console.log(`Failed to connect to MongoDB at ${dbUrl}`)
    console.log(err)
    process.exit(1)
  } else {
    console.log(`Connected to MongoDB, Prepare to load seed data from ${jsonDataFile} ...`)

    const seedData = require(jsonDataFile)

    const mongoSeeder = new MongooseDataSeeder({dropCollection: true})

    mongoSeeder
      .load(seedData)
      .then(function(dbData) {
        console.log("seedData is loaded into test database!")
        console.log(dbData)

        process.exit(0)
      })
      .catch(function(err) {
        console.log("Failed to load seedData into test database")
        console.log(err)

        process.exit(1)
      })
  }
})

Run "test-seeder.js" script loading seed data into MongoDB

$ node test-seeder.js --data ./data.json
Connected to MongoDB, Prepare to load seed data from ./data.json ...
seedData is loaded into test database!
{ teams:
  { teamA:
    { name: 'Team A',
      company: 'Startup',
      _id: 5c36f4ea400d5ab55a981a98,
      __v: 0
    }
  },
  users:
  { user1:
    { firstName: 'Joe',
      name: 'User One',
      email: '[email protected]',
      teamId: 5c36f4ea400d5ab55a981a98,
      _id: 5c36f4ea400d5ab55a981a99,
      __v: 0
    }
  }
}

License

MIT © Jian Wu