cmbf-hapi-restmodel

CMBF REST Model

This HAPI plugin exposes helpers to easily create RESTful API from a model definition based on Joi schema.

It requires the use of other CMBF plugins. See CMBF-Core for more details

Install the plugin

Install using npm:

npm install cmbf-hapi-restmodel --save

With the CMBF launcher, you just add a server hook to load additional plugins like this :

{'register-plugins': function(params, defaultImpl) {
    "use strict";
    var Cmbf = this;
 
    Cmbf.log.debug("Registering specific plugins");
    return defaultImpl().then(function() {
        return P.join(
            Cmbf.installPlugin(require('cmbf-hapi-restmodel'))
            // Load other plugins...
        );
    });
 
}}

You just register this server hook by calling the registerHooks method:

Cmbf.registerHooks(require('./lib/server-hooks'));

ModelManager

The primary service to register models is called modelManager. Inside your plugin implementation, you retrieve a reference to it through the configured plugins:

var modelManager = server.plugins['cmbf-restmod'].modelManager;

This service exposes a registerModel method that you call, providing a model definition.

modelManager.registerModel('banana', require('./models/bananas.js);

The model will create all required routes and mongodb collections for the following operations:

• create
• show
• update
• upsert
• remove
• list

Model

Ideally, you define your model using the new ES6 class concept:

var Joi = require('joi');

module.exports = function(server, config, log) {
    "use strict";

    var BaseModel = server.plugins['cmbf-hapi-restmodel'].BaseModel;
    var clock = server.plugins['covistra-system'].clock;

    class Document extends BaseModel {

        static get endpoint() {
            return "documents";
        }

        static get auth() {
            return "token";
        }

        static get name() {
            return "document";
        }

        static get collection() {
            return 'documents';
        }

        static get Schema() {
            return Joi.object().keys({
                key: Joi.string().required(),
                name: Joi.string().required(),
                ownerId: Joi.string(),
                customerId: Joi.string(),
                type: Joi.string(),
                tags: Joi.array().items(Joi.string()),
                content: Joi.any(),
                created_at: Joi.date().default(clock.nowTs, "Default to current time")
            });
        }

    }

    return Document;
};

You then register this model descriptor:

var Document = require('./models/document')(server, config, log);
modelManager.registerModel('document', Document`);

This model will get automatically exposed when the server stats with all standard routes generated for you.

Overriding ID field

Sometimes you need to override the field through which you model is referenced. By default, we use a id field, but you just have to override the idField property in your derived model:

class MyModel extends BaseModel {

    static get idField() {
        return 'key';
    }
}