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var productCollection = {}; | |
var eventMediator = {}; | |
var viewUtils = new utils(); | |
window.products = new Products(); | |
window.product; | |
window.CartView = Backbone.View.extend({ | |
template : _.template(viewUtils.getTemplate('Cart')), | |
render : function(eventName) { | |
$(this.el).html(this.template()); | |
return this; | |
}, | |
}); | |
window.CheckoutView = Backbone.View.extend({ | |
template : _.template(viewUtils.getTemplate('Checkout')), | |
initialize : function(event) { | |
console.log('CheckoutView::initialize'); | |
}, | |
render : function(eventName) { | |
$(this.el).html(this.template()); | |
return this; | |
}, | |
}); | |
window.HomeView = Backbone.View.extend({ | |
template : _.template(viewUtils.getTemplate('Home')), | |
render : function(eventName) { | |
$(this.el).html(this.template()); | |
return this; | |
}, | |
}); | |
window.ProductsView = Backbone.View.extend({ | |
template : _.template(viewUtils.getTemplate('Products')), | |
events : { | |
//"all":"productSelected" | |
"click a" : "productSelected", | |
//"click a#foo" : "productSelected", | |
//"dblclick":"test", | |
//"tap":"test" | |
}, | |
initialize : function(event) { | |
console.log('ProductsView::initialize'); | |
this.collection = products; | |
this.collection.fetch({ | |
url:'/bc_jquery_mobile/store_app_02/products.json', | |
success:this.populateProductsList | |
}); | |
}, | |
render : function(eventName) { | |
$(this.el).html(this.template()); | |
return this; | |
}, | |
productSelected : function(event) { | |
console.log('productSelected'); | |
console.log($(event.target).attr('data-url')); | |
window.product = $(event.target); | |
console.dir(this.collection.get('p2')); | |
}, | |
populateProductsList:function(data1, data2) { | |
console.log('populateProductsList'); | |
$('#productListView').empty(); | |
$.each(data2.products, function(i, item) { | |
$('#productListView').append('<li><a href="#productdetail" data-url="' + item.id + '"><h3>' + item.label + '</h3></a><a href="#" data-rel="dialog">Buy</a></li>'); | |
}); | |
$('#productListView').listview('refresh'); | |
} | |
}); | |
window.ProductdetailView = Backbone.View.extend({ | |
template : _.template(viewUtils.getTemplate('ProductDetail')), | |
events : { | |
"click #addToCartButton" : "addToCart", | |
"click #checkoutButton" : "checkout", | |
}, | |
initialize : function(event) { | |
console.log('ProductdetailView::initialize'); | |
this.collection = products; | |
console.dir(window.product.attr('data-url')); | |
var ur = window.product.attr('data-url'); | |
console.dir(this.collection.get(ur)); | |
}, | |
render : function(eventName) { | |
$(this.el).html(this.template()); | |
return this; | |
}, | |
addToCart : function(event) { | |
console.log('addToCart'); | |
}, | |
checkout : function(event) { | |
console.log('checkout'); | |
app.checkout(); | |
} | |
}); | |
var AppRouter = Backbone.Router.extend({ | |
routes : { | |
"" : "home", | |
"products" : "products", | |
"cart" : "cart", | |
"productdetail" : "productdetail", | |
"checkout" : "checkout", | |
//"checkout/:do_purchase" : "doPurchase" | |
}, | |
initialize : function() { | |
// Handle back button throughout the application | |
$('.back').live('click', function(event) { | |
window.history.back(); | |
return false; | |
}); | |
this.firstPage = true; | |
}, | |
cart : function() { | |
console.log('AppRouter::cart'); | |
this.changePage(new CartView()); | |
}, | |
checkout : function() { | |
console.log('AppRouter::checkout'); | |
this.changePage(new CheckoutView()); | |
}, | |
home : function() { | |
console.log('AppRouter::home'); | |
this.changePage(new HomeView()); | |
}, | |
products : function() { | |
console.log('AppRouter::products'); | |
this.changePage(new ProductsView()); | |
}, | |
productdetail : function() { | |
console.log('AppRouter::productdetail'); | |
this.changePage(new ProductdetailView()); | |
}, | |
changePage : function(page) { | |
// Add the data-role attribute to the page element | |
$(page.el).attr('data-role', 'page'); | |
page.render(); | |
$('body').append($(page.el)); | |
var transition = $.mobile.defaultPageTransition; | |
// No transition on the first page | |
if(this.firstPage) { | |
transition = 'none'; | |
this.firstPage = false; | |
} | |
$.mobile.changePage($(page.el), { | |
changeHash : false, | |
transition : transition | |
}); | |
} | |
}); | |
$(document).ready(function() { | |
console.log('...Application Ready...'); | |
// Views, Routing | |
app = new AppRouter(); | |
// Handle global events | |
eventMediator = _(eventMediator).extend(Backbone.Events); | |
eventMediator.bind("checkout", function() { | |
app.checkout(); | |
}); | |
Backbone.history.start(); | |
}); |
How / when destroy() be called? Not sure I understand.
Also, do collections require me to manually add models, or does this happen automagically?
Hi Mike,
How / when destroy() be called? Not sure I understand.
It needs to be called during the changePage
method. I modified the method to hold a reference to the fromPage
(the one that was on the way out) and attach a listener for the pagehide
event. You can then call the .page('destroy')
method on the outgoing page in this event handler.
do collections require me to manually add models, or does this happen automagically?
You can either add models to a collection using the add method, or supply an initial collection of models in the Collection's constructor. Alternatively, backbone will take care of adding / modifying models when Backbone.sync is invoked on a collection (usually as the result of a fetch
operation).
Heya!
Modules
First observation would be that you're not separating your code into modules; I've personally be using RequireJS, there's a skeletal project structure available.
Don't have views Subscribe to Sync callbacks
In your
ProductsView.initialize
method you are invokingfetch
on theproducts
collection and updating the View via thesuccess
callback. Personally, I wouldn't have the view subscribe the callback and instead just bind to the collection'schanged
event. You can do this in yourProductsView.initialize
method:Inject Collections and Models into Views
Instead of directly referencing which Model or Collection your view is going to work with, you can make use of constructor dependency injection in the
AppRouter
instead, eg:This makes is easier to swap out dependencies and provides a small amount of decoupling between your view and model (more apparent when you have a modular application).
Equally, your
ProductdetailView
could have the Product model injected by theAppRouter
instead of hitting thewindow
global.Make sure your views are being destroyed
ccoenraets Backbone jQuery Mobile implementation (which I presume you based your
AppRouter
off, doesn't call the jQuery Mobile page destructor; I modified thechangePage
method add an event listener and callpage('destroy')
at the appropriate time.Hope these help! :)