mongoose-seeder

A library to facilitate database seeding of a MongoDB database. This library was designed to create all the data needed by a service upon it's first startup. More specifically, I designed mongoose-seeder to facilitate persisting role data to the database for role-based access control.

Usage

Importing the mongoose-seeder mondule creates a new Seeder object. Seeder has the following methods available:

| Function | Parameters | Returns | Description | |----------|------------|---------|-------------| | Seeder.connect | url, options | Promise | Returns a promise to connect to the MongoDB service using the url and option object provided. | | Seeder.seedData | data | boolean | Returns true if the data was seeded to the database without an error. | | Seeder.disconnect | | | Closes the Seeder object's connection to the database. Must be called when seeding is complete. Triggers a 'onDisconnect' flag to registered listeners. | | Seeder.isConnected | | Boolean | Returns true if Seeder maintains an active connection to the MongoDB service. |

Data Structure

Seeder.seedData can only seed documents into a single collection at a time. The data object passed to seedData() is of the following structure:

{
    'model':'modelName',
    'documents': [
        {'attribute1':'value1', 'attribute2':50},
        {'attribute1':'value2', 'attribute2':125}
    ]
}

modelName is the name of the model to which the documents will be inserted. It is the same string that would be used to fetch the given model using mongoose.model('modelname'). The documents are structured according to the applicable Schema.

Example

The most basic usage of mongoose-seeder is seen below. The seeded data would more likely be fetched from a configuration file in a production environment.

const Seeder    = require('mongoose-seeder')
const url       = 'mongodb://username:[email protected]:31720'
const data      = {
    model: 'user',
    documents: [
        {username: 'DrPhil', age:7500},
        {username: 'Felix', age:14},
        {username: 'The3rdGuy', age:36}
    ]
}

Seeder.connect(url, {}).then(
    () => Seeder.seedData(data)
).catch((error) => {
    // An Error occurred.
}).finally(() => Seeder.disconnect())  
  

Dependencies

Currently, the sole dependency is mongoose.

Contributions

Contributions are more than welcome! There's no doubt I've made a few mistakes.