Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Unsuck your backbone

Unsuck your backbone

Video here : http://bit.ly/13D8tNZ

Backbone.js is a popular, super lightweight JavaScript framework which helps you structure your code MVC style. If you're building JavaScript applications of any reasonable size, you might have heard of it and you might have even given it a try. But if you have used it in anger, then you may have found that a backbone only gets you so far. As your application gets bigger, so does the complexity of your boilerplate code and structure. Let's kick this complexity to the curb, and string up our backbone on a marionette(.js).

Amy Palamountain

April 12, 2013
Tweet

More Decks by Amy Palamountain

Other Decks in Programming

Transcript

  1. unsuck
    your
    backbone

    View Slide

  2. who am i
    just super quick

    View Slide

  3. @ammeep
    aint he handsome?

    View Slide

  4. we have
    evolved
    from static html

    View Slide

  5. jQuery
    soup

    View Slide

  6. we n d
    structure

    View Slide

  7. then came the
    re olution

    View Slide

  8. {❴ mv✯ }❵

    View Slide

  9. view
    model
    controller

    View Slide

  10. view
    model
    Presenter

    View Slide

  11. view
    model
    View model

    View Slide

  12. view
    model
    arse banana
    oh dear!

    View Slide

  13. data concerns
    view concerns
    SEPARATE

    View Slide

  14. {❴ mv✯ libraries }❵
    {❴ mv✯ frameworks }❵

    View Slide

  15. whats the
    difference?

    View Slide

  16. {❴
    frameworks
    }❵
    are generally
    prescriptive
    and sometimes
    restrictive
    :

    View Slide

  17. {❴
    libraries
    }❵
    are generally
    focused
    and
    specific
    :

    View Slide

  18. backbone (13,619)
    knockout (3,532)
    meteor (8,144)
    angular (8,449)
    ember (6,610)
    batman (1,321)
    spine (2,336)
    according to
    frameworks libraries
    canJS (569)

    star count

    View Slide

  19. backbone.js is
    SJEJDVMPVTMZ
    unopinionated

    View Slide

  20. Models
    Views
    Events
    Router
    data & associated functions

    View Slide

  21. Models
    Views
    Events
    Router
    data & associated functions
    ui backed by a model

    View Slide

  22. Models
    Views
    Events
    Router
    data & associated functions
    ui backed by a model
    bind & trigger custom events

    View Slide

  23. Models
    Views
    Events
    Router
    data & associated functions
    ui backed by a model
    bind & trigger custom events
    linkable URLs

    View Slide

  24. refactoring
    1st
    step

    View Slide

  25. everywhere
    state stored

    The Grinch.
    meanest grinch of all.

    function sayHello(){
    var name = $('.name').text();
    var desc = $('.desc').text();
    return'Hello I’m '+ name +'The ' + desc;
    }
    sayHello();

    View Slide

  26. backbone.js
    var Animal = Backbone.Model.extend({
    sayHello: function () {
    var name = this.get('name');
    return 'Hello, I am ' + name;
    }
    });
    var animal = new Animal({name:'cat'});
    animal.sayHello();
    refactored to

    View Slide

  27. Backbone Views
    var MyView = Backbone.View.extend({
    template:_.template($('#animal_template').html()),
    initialize: function() {
    this.listenTo(this.model, "change", this.render);
    }
    render: function() {
    $(this.el).html(this.template(this.model.toJSON()));
    return this
    }
    });

    View Slide

  28. focused
    Backbone keeps it small
    encapsulated
    Backbone keeps it
    Backbone keeps it

    View Slide

  29. View Slide

  30. No
    Strength
    Instructions

    View Slide

  31. No
    Weakne
    Instructions

    View Slide

  32. all it gives you is a base
    to help you into the world of
    well structured javascript

    View Slide

  33. one thousand models
    impossible to extend
    one thousand views
    what the hell
    is going on

    View Slide

  34. backbone
    soup

    View Slide

  35. wait...
    shouldn’t mv
    prevent the soup?

    WHAT

    View Slide

  36. Presentation
    Pa ern
    ONLY
    mv stars are

    View Slide

  37. {❴ mv✯ can’t save us now }❵

    View Slide

  38. unsuck
    my backbone
    Do I
    how

    View Slide

  39. can we build
    scalable backbone
    applications

    View Slide

  40. how do people build
    desktop applications
    can we learn anything

    View Slide

  41. composite
    applications

    View Slide

  42. The secret to building large
    apps is never build large apps.
    Break your application into
    small pieces. Then, assemble
    those testable, bite-sized
    pieces into your big application ”

    Justin Meyer, author JavaScriptMVC

    View Slide

  43. Round u
    Views
    Models
    into
    Modules
    Round u

    View Slide

  44. How do you spot modules in a
    crowded room?

    View Slide

  45. MODULE㽉

    View Slide

  46. MODULE

    View Slide

  47. View Slide

  48. Module
    a small piece of functionality

    View Slide

  49. Module
    are decoupled from each other

    View Slide

  50. Module
    ask never take

    View Slide

  51. Module
    don't pollute the global scope

    View Slide

  52. A change to this module:
    Doesn't impact other modules

    View Slide

  53. Put this module on a new page:
    and it still works!

    View Slide

  54. still play a part ...
    presentation pa ern

    View Slide


  55. How do these
    modules work
    together?

    View Slide

  56. self organise













    they could

    View Slide




  57. BUGs!
    I’m taking you all
    down with me!

    View Slide

  58. planes don't rule the runway

    View Slide

  59. does
    air traffic
    control
    no flips!

    View Slide

  60. air traffic

    control

    View Slide

  61. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  62. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  63. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  64. Placement
    Eventing
    Start Up Lifecycle
    A lication
    fire up the engines

    View Slide

  65. Placement
    Eventing
    Start Up Lifecycle
    A lication
    initial global setup

    View Slide

  66. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  67. Placement
    Eventing
    Start Up Lifecycle
    A lication
    do we have permission to land? go ahead

    View Slide

  68. Placement
    Eventing
    Start Up Lifecycle
    A lication
    publish & subscribe
    to events

    View Slide

  69. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  70. Placement
    Eventing
    Start Up Lifecycle
    A lication
    time to take off?
    Not yet!

    View Slide

  71. Placement
    Eventing
    Start Up Lifecycle
    A lication
    when is it safe for a
    module to start

    View Slide

  72. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  73. Placement
    Eventing
    Start Up Lifecycle
    A lication
    which runway?
    that
    runway

    View Slide

  74. Placement
    Eventing
    Start Up Lifecycle
    A lication
    places modules inside
    the application shell

    View Slide

  75. Placement
    Eventing
    Start Up Lifecycle
    A lication

    View Slide

  76. focused modules
    round up your features into

    View Slide

  77. pub & sub
    fire and forget

    View Slide

  78. compose yourself
    regain control

    View Slide

  79. built this way
    are flexible enough to
    applications
    accept change

    View Slide

  80. can we build
    backbone.js
    this way?
    applications

    View Slide

  81. View Slide

  82. into two parts
    can be split
    marionette

    View Slide

  83. to backbone.js
    mv✯
    extensions

    View Slide

  84. ItemView
    CollectionView
    Layout
    mv✯ extensions
    1

    View Slide

  85. ItemView
    CollectionView
    Layout
    mv✯ extensions
    1

    View Slide

  86. mv✯ extensions
    1 ItemView
    MyView = Backbone.Marionette.ItemView.extend({
    template: "#some-template"
    });
    var view = new MyView({model: new FakeModel()});
    view.render();

    View Slide

  87. ItemView
    CollectionView
    Layout
    mv✯ extensions
    1

    View Slide

  88. mv✯ extensions
    1 CollectionView
    MyItemView = Backbone.Marionette.ItemView.extend({});
    MyColView = Backbone.Marionette.CollectionView.extend({
    itemView: MyItemView
    });

    View Slide

  89. mv✯ extensions
    1 CollectionView
    MyItemView = Backbone.Marionette.ItemView.extend({});
    MyColView = Backbone.Marionette.CollectionView.extend({
    itemView: MyItemView
    });
    var view = new MyColView({collection: stuff});
    view.render();

    View Slide

  90. ItemView
    CollectionView
    Layout
    mv✯ extensions
    1

    View Slide

  91. mv✯ extensions
    1 Layouts
    AppLayout = Backbone.Marionette.Layout.extend({
    template: "#layout-template",
    regions: {
    menu: "#menu", // template elements
    content: "#content" // template elements
    }
    });

    View Slide

  92. mv✯ extensions
    1 Layouts
    AppLayout = Backbone.Marionette.Layout.extend({
    template: "#layout-template",
    regions: {
    menu: "#menu", // template elements
    content: "#content" // template elements
    }
    });
    var layout = new AppLayout();
    layout.render();
    layout.menu.show(new MenuView());
    layout.content.show(new MainContentView());

    View Slide

  93. N more
    Boilerplate code

    View Slide

  94. architecture
    composite
    event driven

    View Slide

  95. Application
    Eventing
    Modules
    Composite Apps
    2

    View Slide

  96. Application
    Eventing
    Modules
    Composite Apps
    2

    View Slide

  97. Composite Apps
    2 Eventing
    Backbone.Wreqr

    View Slide

  98. Composite Apps
    2 Eventing
    Backbone.Wreqr
    Event Aggregator
    Requests
    Commands

    View Slide

  99. Composite Apps
    2 Eventing
    Backbone.Wreqr
    Event Aggregator
    Requests
    Commands

    View Slide

  100. Composite Apps
    2 Eventing
    var vent = new Backbone.Wreqr.EventAggregator();
    vent.on("foo", function(){
    console.log("foo event");
    });
    //elsewhere in your app
    vent.trigger("foo");

    View Slide

  101. Composite Apps
    2 Eventing
    Backbone.Wreqr
    Event Aggregator
    Requests
    Commands

    View Slide

  102. Composite Apps
    2 Eventing
    var reqres = new Backbone.Wreqr.RequestResponse();
    reqres.setHandler("foo", function(){
    return "foo requested. this is the response";
    });
    //elsewhere in your app
    var result = reqres.request("foo");
    console.log(result);

    View Slide

  103. Composite Apps
    2 Eventing
    Backbone.Wreqr
    Event Aggregator
    Requests
    Commands

    View Slide

  104. Composite Apps
    2 Eventing
    var commands = new Backbone.Wreqr.Commands();
    commands.setHandler("foo", function(){
    console.log("the foo command was executed");
    });
    //elsewhere in your app
    commands.execute("foo");

    View Slide

  105. Composite Apps
    2 Eventing
    Backbone.Wreqr
    Event Aggregator
    Requests
    Commands

    View Slide

  106. Application
    Eventing
    Modules
    Composite Apps
    2

    View Slide

  107. Composite apps
    2

    View Slide

  108. StartUp
    Eventing
    Lifecycle
    composite apps
    2
    Placement

    View Slide

  109. StartUp
    Eventing
    Lifecycle
    composite apps
    2
    Placement

    View Slide

  110. Composite Apps
    2 Start Up
    MyApp = new Backbone.Marionette.Application();
    MyApp.start();

    View Slide

  111. Composite Apps
    2 Start Up
    MyApp.onInitializeBefore = function(options){
    //stuff
    });
    MyApp.onInitializeAfter = function(options){
    if (Backbone.history){
    Backbone.history.start();
    }
    });
    MyApp.start();

    View Slide

  112. StartUp
    Eventing
    Lifecycle
    Composite Apps
    2
    Placement

    View Slide

  113. Composite Apps
    2 Eventing
    MyApp = new Backbone.Marionette.Application();
    MyApp.vent.on("foo", function(){
    alert("bar");
    });
    MyApp.vent.trigger("foo"); // => alert box "bar"

    View Slide

  114. StartUp
    Eventing
    Lifecycle
    composite apps
    2
    Placement

    View Slide

  115. Composite Apps
    2 Lifecycle
    // start the app
    MyApp.start();
    // later, start the module
    MyApp.FooModule.start();

    View Slide

  116. StartUp
    Eventing
    Lifecycle
    composite apps
    2
    Placement

    View Slide

  117. Composite Apps
    2 Placement
    var MyApp = new Backbone.Marionette.Application();
    MyApp.addRegions({
    navigation : '#navigation_container',
    content : '#content_container',
    rightSidebar : '#right_sidebar_container',
    footer : '#footer_container'
    });

    View Slide

  118. Composite Apps
    2 Placement
    MyApp.start();
    MyApp.content.show(new View());
    var MyApp = new Backbone.Marionette.Application();
    MyApp.addRegions({
    navigation : '#navigation_container',
    content : '#content_container',
    rightSidebar : '#right_sidebar_container',
    footer : '#footer_container'
    });

    View Slide

  119. Application
    Eventing
    Modules
    Composite Apps
    2

    View Slide

  120. Composite Apps
    2 Modules
    ap lica ion
    hang off the
    p t

    View Slide

  121. Composite Apps
    2 Modules
    MyApp.module("MyModule", function(MyModule, MyApp, Backbone)
    {
    /// insert module functionality here
    });

    View Slide

  122. Composite Apps
    2 Modules
    MyApp.module("MyModule", function(MyModule, MyApp, Backbone){
    ...define models...
    ImageItemView = Backbone.Marionette.ItemView.extend({
    template: "#image-template"
    });
    Library.show = function (region) {
    region.show(new ImageItemView({model: new MyModel()}));
    };
    });

    View Slide

  123. Composite Apps
    2 Modules
    MyApp.module('ImageCatalog',function(ImageCatalog, App...){
    .... module initialisation code...
    App.commands.addHandler('catalog:add', function(image){
    allImages.add(image);
    });
    App.reqres.addHandler('catalog:get', function(){
    return allImages;
    });
    });

    View Slide

  124. Application
    Eventing
    Modules
    Composite Apps
    2

    View Slide

  125. plumbing code
    say goodbye to crappy

    View Slide

  126. to your events
    add semantic meaning

    View Slide

  127. composite design
    accept the winds of change with

    View Slide

  128. marionette.js
    unsuck our backbone using

    View Slide

  129. only
    scratched
    the
    Surface

    View Slide

  130. tl;dr
    backbone.js is
    awesome

    View Slide

  131. tl;dr
    but scaling it is
    ridiculouslyhard

    View Slide

  132. tl;dr
    mv help us create
    structure

    View Slide

  133. tl;dr
    they don’t help us write
    scaleable
    JavaScript a lication

    View Slide

  134. tl;dr
    we need to think beyond mv✯

    View Slide

  135. tl;dr
    large JavaScript applications
    composed
    from smaller parts

    View Slide

  136. tl;dr
    make your application dance
    marionette.js

    View Slide

  137. That it!
    @ammeep
    amy.palamounta.in
    internet related activities:
    greenbutton.com
    backbonejs.org
    marionettejs.com
    lostechies.com/derickbailey
    addyosmani.com/blog

    View Slide