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    ember-cli addon that provides a simple identity map for ember.js web applications


    ember install ember-cli-simple-store

    You get 6 methods: push/pushArray/remove/find/findOne/clear

    //create or update person model
    simpleStore.push("person", {id: 1, name: "toran"});
    //create or update multiple person models - observers are notified only once all models have been created or updated
    simpleStore.pushArray("person", [{id: 1, name: "john"}, {id: 2, name: "jane"}]);
    //remove person model with id=123
    simpleStore.remove("person", 123);
    //find all person models
    //find a single person model with id=123
    simpleStore.find("person", 123);
    //find all person models with account_id=789
    simpleStore.find("person", {account_id: 789});
    //find all person models with name toran and salary > 100
    var filter = function(person) {
        var name = person.get("name");
        var salary = person.get("salary");
        return name === "toran" && salary > 100;
    simpleStore.find("person", filter);
    //find the first person model
    //clear the entire identity map of all person models
    //clear the entire identity map of all models

    Using the store by example

    Below I'll show how you can use the store with a simple ember object to find/add/remove/update

    The full example below relies on a small xhr addon PromiseMixin

    import Ember from "ember";
    import PromiseMixin from "ember-promise/mixins/promise";
    var PersonRepository = Ember.Object.extend({
        simpleStore: Ember.inject.service(),
        find() {
            var simpleStore = this.get("simpleStore");
            return PromiseMixin.xhr("/api/people/", "GET").then(function(response) {
                response.forEach(function(person) {
                    simpleStore.push("person", person);
                return simpleStore.find("person");
        findById(id) {
            var simpleStore = this.get("simpleStore");
            return simpleStore.find("person", id);
        insert(person) {
            var simpleStore = this.get("simpleStore");
            var hash = {data: JSON.stringify(person)};
            return new Ember.RSVP.Promise(function(resolve,reject) {
                return PromiseMixin.xhr("/api/people/", "POST", hash).then(function(persisted) {
                    var inserted = simpleStore.push("person", persisted);
                }, function(err) {
        update(person) {
            var person_id = person.get("id");
            var hash = {data: JSON.stringify(person)};
            var endpoint = "/api/people/%@/".fmt(person_id);
            return PromiseMixin.xhr(endpoint, "PUT", hash);
        remove(person) {
            var simpleStore = this.get("simpleStore");
            var person_id = person.get("id");
            var endpoint = "/api/people/%@/".fmt(person_id);
            return new Ember.RSVP.Promise(function(resolve,reject) {
                return PromiseMixin.xhr(endpoint, "DELETE").then(function(arg) {
                    simpleStore.remove("person", person_id);
                }, function(err) {
    export default PersonRepository;

    What about relationship support?

    A one-to-many example might look something like this

    import Ember from 'ember';
    export default Ember.Object.extend({
        simpleStore: Ember.inject.service(),
        role: Ember.computed.alias('belongs_to.firstObject'),
        belongs_to: Ember.computed(function() {
            let userId = this.get('id');
            let simpleStore = this.get('simpleStore');
            let filter = function(role) {
                let users = role.get('users');
                return Ember.$.inArray(userId, users) > -1;
            return simpleStore.find('role', filter);
    //a test to show how this api works from the outside
    test('role property returns associated model or undefined', function(assert) {
        let user = simpleStore.push('user', {id: 1});
        simpleStore.push('role', {id: 2, name: 'Admin', users: [1]});
        let role = user.get('role');
        assert.equal(role.get('id'), 2);
        assert.equal(role.get('name'), 'Admin');
        role.set('users', []);
        role = user.get('role');
        assert.equal(role, undefined);

    What about dirty tracking?

    If you want the ability to track if your model is dirty use the attr for each field and the Model to get save/rollback

    import { attr, Model } from "ember-cli-simple-store/model";
    var Person = Model.extend({
        firstName: attr(),
        lastName: attr(),
        fullName: function() {
            var first = this.get("firstName");
            var last = this.get("lastName");
            return first + " " + last;
        }.property("firstName", "lastName")
    //save your object to reset isDirty
    var person = Person.create({id: 1, firstName: "x", lastName: "y"});
    person.set("firstName", "toran");;
    //rollback your object to reset isDirty and restore it
    person.set("firstName", "foobar");

    If you want to know if an individual property isDirty you can ask like so

    person.get("firstNameIsDirty"); //undefined
    person.set("firstName", "foobar");
    person.get("firstNameIsDirty"); //true

    For new forms that start with undefined properties you can define the default state for isDirty. Example: you have a model that is bound to a form with a checkbox input. The create form starts with a new model so each bound property is undefined. If the user decides to check the bound checkbox (setting the value to true) and then decides to uncheck it (setting the value to false) you would expect the form is not dirty - but because undefined !== false you find the model is dirty. To prevent this behavior set a default value for dirty tracking on the models attr like so.

    var Animal = Model.extend({
        omnivore: attr(false)
    var animal = Animal.create();
    animal.get("omnivore"); //undefined
    animal.get("isDirty"); //false
    animal.set("omnivore", true);
    animal.get("isDirty"); //true
    animal.set("omnivore", false);
    animal.get("isDirty"); //false

    What about custom primary keys?

    By default, simple store will use the 'id' property on your records as the primary key. If you wish to override this, reopen your model class and add a primaryKey attribute.

    var Food = Ember.Object.extend({
        food_id: null,
        calories: null
        primaryKey: 'food_id'
    simpleStore.push('food', {
        food_id: 5,
        calories: 500
    // Returns the pushed record
    simpleStore.find('food', 5);

    Example applications

    Simplest example with the least amount of complexity (tests included)

    Simple example running ember 2.4

    Async example that will paint right away (loading section included w/ tests)

    Async example with relationships (loading section included w/ tests)

    Dirty tracking example with both save and rollback

    Running the unit tests

    npm install
    ember test


    Copyright © 2015 Toran Billups

    Licensed under the MIT License


    npm i ember-cli-simple-store

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