Add a custom remote method to a full-stack LoopBack AngularJS applications

Instructions.md

This is an extra exercise for the workshop Building a full-stack application with LoopBack and AngularJS.

Add a custom model method

Let's write a method Whiskey.prototype.ratingStats that will provide a breakdown of rating data for a given whiskey. This method should be defined in common/models/whiskey.js. Below is a template, it's up to the reader to implement the statistical computation.

module.exports = function(Whiskey) {
  Whiskey.prototype.ratingStats = function(cb) {
    // TODO: compute rating statistics
    // the whiskey id is available as `this.id`
    cb(null, {
      5: 10, // percent
      4: 30, 
      3: 40,
      2: 10,
      1: 10
    });
  };

  Whiskey.setup = function() {
    Whiskey.base.setup.apply(this, arguments);

    this.remoteMethod('ratingStats', {
      isStatic: false,
      returns: [{ arg: 'stats', type: 'object' }]
    });
  };

  Whiskey.setup();
};

Use the LoopBack Explorer to test this new function via the REST API. Re-run lb-ng to update the Angular client services and have the method available in the client app too.