Rough draft of 3.0 done.
This commit is contained in:
parent
1f6c1e0b46
commit
1c417adc6e
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@ -4,3 +4,10 @@
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.#*
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.DS_Store
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*~
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node_modules/*
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bower_components/*
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npm-debug.log
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docs/*.html
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docs/*.tex
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htdocs/lib
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package.yml
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@ -0,0 +1,25 @@
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var fs = require('fs');
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var Inotify = require('inotify').Inotify;
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var spawn = require('child_process').spawn;
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var spew = function(data) {
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return console.log(data.toString('utf8'));
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};
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var server = spawn('./node_modules/http-server/bin/http-server', ['./htdocs/']);
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server.stdout.on('data', spew);
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var monitor = new Inotify();
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var reBuild = function() {
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var maker = spawn('make', ['store']);
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return maker.stdout.on('data', spew);
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};
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monitor.addWatch({
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path: "./src/backbonestore.nw",
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watch_for: Inotify.IN_CLOSE_WRITE,
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callback: reBuild
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});
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@ -0,0 +1,33 @@
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{
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"name": "the-backbone-store",
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"version": "3.0.1",
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"description": "A comprehensive (one hopes) tutorial on a simple development platform for Backbone.",
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"main": "htdocs/index.html",
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"dependencies": {
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"http-server": "^0.9.0"
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},
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"devDependencies": {
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"inotify": "^1.4.0",
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"bower": "^1.7.0"
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},
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"scripts": {
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"test": "make serve"
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},
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"repository": {
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"type": "git",
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"url": "git+https://github.com/elfsternberg/The-Backbone-Store.git"
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},
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"keywords": [
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"backbone",
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"javascript",
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"makefiles",
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"node",
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"tutorial"
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],
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"author": "Kenneth M. \"Elf\" Sternberg <elf.sternberg@gmail.com>",
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"license": "BSD-2-Clause",
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"bugs": {
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"url": "https://github.com/elfsternberg/The-Backbone-Store/issues"
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},
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"homepage": "https://github.com/elfsternberg/The-Backbone-Store#readme"
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}
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@ -116,6 +116,7 @@ var Item = Backbone.Model.extend({
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return this.get('product').get('price') * this.get('quantity');
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}
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});
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@
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The methods [[.get(item)]] and [[.set(item, value)]] are at the heart of
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@ -149,8 +150,9 @@ methods to (in our case) static JSON back-end.
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var ProductCollection = Backbone.Collection.extend({
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model: Product,
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initialize: function(models, options) {
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return this.url = options.url;
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this.url = options.url;
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},
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comparator: function(item) {
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return item.get('title');
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}
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@ -448,7 +450,7 @@ Require's ``text'' plugin.
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Here is the HTML for our home page's template:
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<<product list template>>=
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<script id="store_index_template" type="text/x-underscore-tmplate">
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<script id="store_index_template" type="text/x-underscore-tmplate">
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<h1>Product Catalog</h1>
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<ul>
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<% for(i=0,l=products.length;i<l;++i) { p = products[i]; %>
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@ -464,7 +466,7 @@ Here is the HTML for our home page's template:
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</li>
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<% } %>
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</ul>
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</script>
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</script>
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@
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@ -480,12 +482,14 @@ heirarchy, and keeping track of the ItemCollection object, so we can add
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and change items as needed.
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<<product detail view>>=
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class ProductView extends _BaseView
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className: 'productitemview'
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template: $("#store_item_template").html()
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initialize: (options) ->
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_BaseView.prototype.initialize.apply @, [options]
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@itemcollection = options.itemcollection
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var ProductView = BaseView.extend({
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className: 'productitemview',
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template: _.template($("#store_item_template").html()),
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initialize: function(options) {
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BaseView.prototype.initialize.apply(this, [options]);
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this.itemcollection = options.itemcollection;
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},
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@
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%$
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@ -501,9 +505,10 @@ those that jQuery's ``delegate'' understands. As of 1.5, that seems
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to be just about all of them.
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<<product detail view>>=
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events:
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events: {
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"keypress .uqf" : "updateOnEnter"
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"click .uq" : "update"
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},
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@
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@ -530,21 +535,27 @@ view. [[@\$('.uqf')]] is shorthand for [[$('uqf', @el)]], and helps
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clarify what it is you're looking for.
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<<product detail view>>=
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update: (e) ->
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e.preventDefault()
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@itemcollection.updateItemForProduct @model, parseInt(@$('.uqf').val())
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update: function(e) {
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e.preventDefault();
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return this.itemcollection.updateItemForProduct(this.model, parseInt(this.$('.uqf').val()));
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},
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updateOnEnter: (e) ->
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@update(e) if e.keyCode == 13
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updateOnEnter: function(e) {
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if (e.keyCode === 13) {
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return this.update(e);
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}
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},
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@
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The render is straightforward:
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<<product detail view>>=
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render: () ->
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@el.html(_.template(@template)(@model.toJSON()));
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@
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render: function() {
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this.el.html(this.template(this.model.toJSON()));
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return this;
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}
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});
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@
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@ -552,26 +563,35 @@ The product detail template is fairly straightforward. There is no
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[[underscore]] magic because there are no loops.
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<<product detail template>>=
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%script#store_item_template(type= "text/x-underscore-template")
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.item-detail
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.item-image
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%img(src="<%= large_image %>" alt="<%= title %>")/
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.item-info
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.item-artist <%= artist %>
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.item-title <%= title %>
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.item-price $<%= price %>
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.item-form
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%form(action="#/cart" method="post")
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%p
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%label Quantity:
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%input(type="text" size="2" name="quantity" value="1" class="uqf")/
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%p
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%input(type="submit" value="Add to Cart" class="uq")/
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<script id="store_item_template" type="text/x-underscore-template">
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<div class="item-detail">
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<div class="item-image">
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<img alt="<%= title %>" src="<%= large_image %>">
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</div>
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<div class="item-info">
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<div class="item-artist"><%= artist %></div>
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<div class="item-title"><%= title %></div>
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<div class="item-price">$<%= price %></div>
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<div class="item-form"></div>
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<form action="#/cart" method="post">
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<p>
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<label>Quantity:</label>
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<input class="uqf" name="quantity" size="2" type="text" value="1">
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</p>
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<p>
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<input class="uq" type="submit" value="Add to Cart">
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</p>
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</form>
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<div class="item-link">
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<a href="<%= url %>">Buy this item on Amazon</a>
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</div>
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<div class="back-link">
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<a href="#">« Back to Items</a>
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</div>
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</div>
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</div>
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</script>
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.item-link
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%a(href="<%= url %>") Buy this item on Amazon
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.back-link
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%a(href="#") « Back to Items
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@
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So, let's talk about that shopping cart thing. We've been making the
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@ -580,12 +600,14 @@ product detail view, any corresponding subscribing views sholud
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automatically update.
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<<cart widget>>=
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class CartWidget extends Backbone.View
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el: $('.cart-info')
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template: $('#store_cart_template').html()
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var CartWidget = Backbone.View.extend({
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el: $('.cart-info'),
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template: _.template($('#store_cart_template').html()),
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initialize: () ->
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@collection.bind 'update', @render.bind @
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initialize: function() {
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Backbone.View.prototype.initialize.apply(this, arguments);
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this.collection.bind('update', this.render.bind(this));
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},
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@
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%$
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@ -600,21 +622,42 @@ template with the new count and cost, and then wiggle it a little to
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show that it did changed:
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<<cart widget>>=
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render: () ->
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tel = @$el.html _.template(@template)({
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'count': @collection.getTotalCount()
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'cost': @collection.getTotalCost()
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})
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tel.animate({paddingTop: '30px'}).animate({paddingTop: '10px'})
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@
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CartWidget.prototype.render = function() {
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var tel = this.$el.html(this.template({
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'count': this.collection.getTotalCount(),
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'cost': this.collection.getTotalCost()
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}));
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tel.animate({ paddingTop: '30px' }).animate({ paddingTop: '10px' });
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return this;
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}
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});
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@
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And the HTML for the template is dead simple:
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You may have noticed that every render ends in [[return this]]. There's
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a reason for that. Render is supposed to be pure statement: it's not
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supposed to calculate anything, nor is it supposed to mutate anything on
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the Javascript side. It can and frequently does, but that's beside the
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point. By returning [[this]], we can then call something immediately
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afterward.
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For example, let's say you have a pop-up dialog. It starts life
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hidden. You need to update the dialog, then show it:
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<<example>>=
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myDialog.render().show();
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@
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Because what render() return is [[this]], this code works as expected.
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That's how you do chaining in HTML/Javascript.
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Back to our code. The HTML for the Cart widget template is dead simple:
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<<cart template>>=
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%script#store_cart_template(type="text/x-underscore-template")
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%p Items: <%= count %> ($<%= cost %>)
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<script id="store_cart_template" type="text/x-underscore-template">
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<p>Items: <%= count %> ($<%= cost %>)</p>
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</script>
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@
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%$
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@ -630,10 +673,10 @@ of the [[Views]], the [[ProductCollection]], and the
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[[ItemCollection]].
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<<router>>=
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class BackboneStore extends Backbone.Router
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views: {}
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products: null
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cart: null
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var BackboneStore = Backbone.Router.extend({
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views: {},
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products: null,
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cart: null,
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@
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@ -641,9 +684,10 @@ There are two events we care about: view the list, and view a detail.
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They are routed like this:
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<<router>>=
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routes:
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"": "index"
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routes: {
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"": "index",
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"item/:id": "product"
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},
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@
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@ -659,19 +703,18 @@ back-end server. For that, I use the jQuery deferred again, because
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returns the result of an [[ajax()]] call, which is a deferred.
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<<router>>=
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initialize: (data) ->
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@cart = new ItemCollection()
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new CartWidget
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collection: @cart
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@products = new ProductCollection [],
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url: 'data/items.json'
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@views =
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'_index': new ProductListView
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collection: @products
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$.when(@products.fetch({reset: true}))
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.then(() -> window.location.hash = '')
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@
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initialize: function(data) {
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Backbone.Router.prototype.initialize.apply(this, arguments);
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this.cart = new ItemCollection();
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new CartWidget({ collection: this.cart });
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this.products = new ProductCollection([], { url: 'data/items.json' });
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this.views = {
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'_index': new ProductListView({ collection: this.products })
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};
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$.when(this.products.fetch({ reset: true })).then(function() {
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return window.location.hash = '';
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});
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},
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@
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%$
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@ -682,14 +725,14 @@ and the product detail, inherited from [[\_BaseView]], which has the
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[[hide()]] and [[show()]] methods. We want to hide all the views,
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then show the one invoked. First, let's hide every view we know
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about. [[hide()]] returns either a deferred (if the object is being
|
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hidden) or null. The [[_.select()]] call at the end means that this
|
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hidden) or null. The [[_.filter()]] call at the end means that this
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method returns only an array of deferreds.
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<<router>>=
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hideAllViews: () ->
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_.select(_.map(@views, (v) -> return v.hide()),
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(t) -> t != null)
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hideAllViews = function() {
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return _.filter(_.map(this.views, function(v) { return v.hide(); }),
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function(t) { return t !== null; });
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},
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@
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@ -699,9 +742,12 @@ wait for; to make it take an array of arguments, you use the
|
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[[.apply()]] method.
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<<router>>=
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index: () ->
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view = @views['_index']
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$.when.apply($, @hideAllViews()).then(() -> view.show())
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index: function() {
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var view = this.views['_index'];
|
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return $.when.apply($, this.hideAllViews()).then(function() {
|
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return view.show();
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});
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},
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@
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@ -709,7 +755,8 @@ On the other hand, showing the product detail page is a bit trickier.
|
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In order to avoid re-rendering all the time, I am going to create a
|
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view for every product in which the user shows interest, and keep it
|
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around, showing it a second time if the user wants to see it a second
|
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time.
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time. Note that the view only needs to be rendered \textit{once}, after
|
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which we can just hide or show it on request.
|
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|
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Not that we pass it the [[ItemCollection]] instance. It uses this to
|
||||
create a new item, which (if you recall from our discussion of
|
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|
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@ -719,14 +766,22 @@ item and the item collection \textit{changes}, which in turn causes
|
|||
the [[CartWidget]] to update automagically as well.
|
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|
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<<router>>=
|
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product: (id) ->
|
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product = @products.detect (p) -> p.get('id') == (id)
|
||||
view = (@views['item.' + id] ||= new ProductView(
|
||||
product: function(id) {
|
||||
var view = this.views[id];
|
||||
if (!view) {
|
||||
var product = this.products.detect(function(p) {
|
||||
return p.get('id') === id;
|
||||
});
|
||||
view = this.views[id] = new ProductView({
|
||||
model: product,
|
||||
itemcollection: @cart
|
||||
).render())
|
||||
$.when(@hideAllViews()).then(
|
||||
() -> view.show())
|
||||
itemcollection: this.cart
|
||||
}).render()
|
||||
}
|
||||
return $.when(this.hideAllViews()).then(function() {
|
||||
return view.show();
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
@
|
||||
%$
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||||
|
|
@ -734,9 +789,11 @@ the [[CartWidget]] to update automagically as well.
|
|||
Finally, we need to start the program
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||||
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||||
<<initialization>>=
|
||||
$(document).ready () ->
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$(document).ready(function() {
|
||||
new BackboneStore();
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Backbone.history.start();
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return Backbone.history.start();
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});
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@
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%$
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|
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@ -765,131 +822,6 @@ namespace wrapper:
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<<initialization>>
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||||
@
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\section{A Little Stylus}
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Stylus is a beautiful little language that compiles down to CSS. The
|
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original version of The Backbone Store used the same CSS provided from
|
||||
the original Sammy tutorial, but I wanted to show you this one extra
|
||||
tool because it's an essential part of my kit.
|
||||
|
||||
If you want rounded borders, you know that writing all that code, for
|
||||
older browsers as well as modern ones, and providing it to all the
|
||||
different objects you want styled that way, can be time consuming.
|
||||
Stylus allows you to define a function that can be called from within
|
||||
any style, thus allowing you to define the style here, and attach a
|
||||
set style to a semantic value in your HTML:
|
||||
|
||||
<<jsonstore.styl>>=
|
||||
rounded(radius)
|
||||
-moz-border-radius-topleft: radius
|
||||
-moz-border-radius-topright: radius
|
||||
-moz-border-radius-bottomleft: radius
|
||||
-moz-border-radius-bottomright: radius
|
||||
-webkit-border-bottom-right-radius: radius
|
||||
-webkit-border-top-left-radius: radius
|
||||
-webkit-border-top-right-radius: radius
|
||||
-webkit-border-bottom-left-radius: radius
|
||||
border-bottom-right-radius: radius
|
||||
border-top-left-radius: radius
|
||||
border-top-right-radius: radius
|
||||
border-bottom-left-radius: radius
|
||||
|
||||
background_gradient(base)
|
||||
background: base
|
||||
background: -webkit-gradient(linear, left top, left bottom, from(lighten(base, 20%)), to(darken(base, 20%)))
|
||||
background: -moz-linear-gradient(top, lighten(base, 20%), darken(base, 20%))
|
||||
|
||||
@
|
||||
|
||||
And if you look down below you'll see the [[rounded()]] function
|
||||
called for the list items, which have borders.
|
||||
|
||||
One of the real beauties of Stylus is that you can contains some style
|
||||
definitions within others. You can see below that the header
|
||||
contains an H1, and the H1 definitions will be compiled to only apply
|
||||
within the context of the header. Stylus allows you to write CSS the
|
||||
way you write HTML!
|
||||
|
||||
<<jsonstore.styl>>=
|
||||
body
|
||||
font-family: "Lucida Grande", Lucida, Helvetica, Arial, sans-serif
|
||||
background: #FFF
|
||||
color: #333
|
||||
margin: 0px
|
||||
padding: 0px
|
||||
|
||||
|
||||
#main
|
||||
position: relative
|
||||
|
||||
#header
|
||||
background_gradient(#999)
|
||||
margin: 0px
|
||||
padding: 20px
|
||||
border-bottom: 1px solid #ccc
|
||||
|
||||
h1
|
||||
font-family: Inconsolata, Monaco, Courier, mono
|
||||
color: #FFF
|
||||
margin: 0px
|
||||
|
||||
.cart-info
|
||||
position: absolute
|
||||
top: 0px
|
||||
right: 0px
|
||||
text-align: right
|
||||
padding: 10px
|
||||
background_gradient(#555)
|
||||
color: #FFF
|
||||
font-size: 12px
|
||||
font-weight: bold
|
||||
|
||||
img
|
||||
border: 0
|
||||
|
||||
.productitemview
|
||||
position: absolute
|
||||
top: 0
|
||||
left: 0
|
||||
|
||||
#productlistview
|
||||
position: absolute
|
||||
top: 0
|
||||
left: 0
|
||||
|
||||
ul
|
||||
list-style: none
|
||||
|
||||
.item
|
||||
float:left
|
||||
width: 250px
|
||||
margin-right: 10px
|
||||
margin-bottom: 10px
|
||||
padding: 5px
|
||||
rounded(5px)
|
||||
border: 1px solid #ccc
|
||||
text-align:center
|
||||
font-size: 12px
|
||||
|
||||
.item-title
|
||||
font-weight: bold
|
||||
|
||||
.item-artist
|
||||
font-weight: bold
|
||||
font-size: 14px
|
||||
|
||||
.item-detail
|
||||
margin: 10px 0 0 10px
|
||||
|
||||
.item-image
|
||||
float:left
|
||||
margin-right: 10px
|
||||
|
||||
.item-info
|
||||
padding: 100px 10px 0px 10px
|
||||
|
||||
@
|
||||
|
||||
And that's it. Put it all together, and you've got yourself a working
|
||||
Backbone Store.
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue