fancy model object with bind

binding-model.js

// all functions use the "this" key word
function create (new_value) {}
function read_one (ID) {}
function read_all () {}
function update (ID, new_value) {}
function remove (ID) {}

function binding_factory (instance_object) {
  return {
    create: create.bind(instance_object),
    read_one: read_one.bind(instance_object),
    read_all: read_all.bind(instance_object),
    update: update.bind(instance_object),
    remove: remove.bind(instance_object)
  }
}

module.exports = binding_factory;

// --- new file

let binding_factory = require("./binding_factory")

let student_instance = {
  db: {},
  nextID: 0,
  name: "studnet"
}

let student_model = binding_factory(student_instance);

// https://goo.gl/3PGzHj

study-this-one.js

// all functions use the "this" key word
function increment_id(){this.nextID++}
function get_id() {return this.nextID}

function binding_factory (instance_object) {
  return {
    increment_id: increment_id.bind(instance_object),
    get_id: get_id.bind(instance_object)
  }
}


let student_instance = {
  db: {},
  nextID: 0,
  name: "studnet"
}

let chair_instance = {
  db: {},
  nextID: 0,
  name: "chair"
}

let student_model = binding_factory(student_instance);
console.log(student_model.nextID)
console.log(student_model.get_id())
student_model.increment_id()
console.log(student_model.get_id())

let chair_model = binding_factory(chair_instance);
console.log(chair_model.nextID)
console.log(chair_model.get_id())
chair_model.increment_id()
console.log(chair_model.get_id())



// https://goo.gl/5Nu92o