Test behavior of Backbone and Bookshelf using different kinds of inheritence

backbone-bookshelf-inheritence-test.js

var _ = require('lodash');
var Backbone = require('backbone');
var Bookshelf = require('bookshelf');
var Knex = require('knex');

var ModelBaseMixin = {

  initialize: function() {
    console.log('ModelBaseMixin.initialize()');
    this.say();
  },

  say: function() {
    console.log('ModelBaseMixin.say()');
  },

  sayMore: function() {
    console.log('ModelBaseMixin.sayMore()');
  },

};

var ArticleBaseMixin = _.assign({}, ModelBaseMixin, {

  initialize: function() {
    ModelBaseMixin.initialize.apply(this, arguments);
    console.log('ArticleBaseMixin.initialize()');
  },

  say: function() {
    ModelBaseMixin.say.apply(this, arguments);
    console.log('ArticleBaseMixin.say()');
    this.sayMore();
  },

});

// ----------------------------------------------------------------------------

console.log('\nConstructing BackboneArticle...');
var BackboneArticle = Backbone.Model.extend(ArticleBaseMixin);
var bba = new BackboneArticle();
console.log('\nFrom bba.say():');
bba.say();

// -----------------------------------------------------------------------------

var db = Bookshelf(
  Knex({
    client: 'sqlite3',
    connection: {
      filename: process.cwd() + '/bblb.db',
    },
  })
);

console.log('\nConstructing BookshelfArticle...');
var BookshelfArticle = db.Model.extend(ArticleBaseMixin);
var bsa = new BookshelfArticle();
console.log('\nFrom bsa.say():');
bsa.say();

// -------

/* Output:

Constructing BackboneArticle...
ModelBaseMixin.initialize()
ModelBaseMixin.say()
ArticleBaseMixin.say()
ModelBaseMixin.sayMore()
ArticleBaseMixin.initialize()

From bba.say():
ModelBaseMixin.say()
ArticleBaseMixin.say()
ModelBaseMixin.sayMore()

Constructing BookshelfArticle...
ModelBaseMixin.initialize()
ModelBaseMixin.say()
ArticleBaseMixin.say()
ModelBaseMixin.sayMore()
ArticleBaseMixin.initialize()

From bsa.say():
ModelBaseMixin.say()
ArticleBaseMixin.say()
ModelBaseMixin.sayMore()
*/