Created
January 16, 2012 04:24
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intro to backbone: model, collection and view
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| <html> | |
| <head> | |
| <style> | |
| #color_label { | |
| display: inline-block; | |
| width: 90; | |
| text-align: right | |
| } | |
| #color_bar { | |
| display: inline-block; | |
| width: 1000; | |
| } | |
| </style> | |
| <script src="js/underscore.js"></script> | |
| <script src="js/json2.js"></script> | |
| <script src="js/jquery-1.7.1.min.js"></script> | |
| <script src="js/backbone.js"></script> | |
| <script src="js/css_colors.js"></script> | |
| <script type="text/javascript"> | |
| $(function() { | |
| // Model | |
| Color = Backbone.Model.extend({ | |
| validate: function(attributes) { | |
| var color_formatted = attributes.name.toLowerCase(); | |
| if (css_colors.indexOf(color_formatted) == -1) { | |
| return color_formatted + ' is not a css color name'; | |
| } | |
| }, | |
| initialize: function() { | |
| this.bind('error', function(model, error) { | |
| console.log('error: '+ error); | |
| }); | |
| }, | |
| defaults: { | |
| name: null | |
| } | |
| }); | |
| // Collection | |
| Colors = Backbone.Collection.extend({ | |
| initialize: function(models, options) { | |
| this.bind('add', options.view.addColor); | |
| } | |
| }); | |
| // View | |
| AppView = Backbone.View.extend({ | |
| el: $('body'), | |
| events: { | |
| 'click #add_color': 'showAddColorPrompt' | |
| }, | |
| initialize: function() { | |
| this.colors = new Colors(null, {view: this}); | |
| }, | |
| showAddColorPrompt: function() { | |
| var color_name = prompt("Add a color"); | |
| var color_model = new Color; | |
| if (color_model.set({name: color_name})) { | |
| this.colors.add(color_model); | |
| } | |
| }, | |
| addColor: function(model) { | |
| var context = { | |
| color_name: model.get('name') | |
| }; | |
| var color_html = _.template($('#color_template').html(), context) | |
| $('#color_list').append(color_html); | |
| } | |
| }); | |
| var appview = new AppView(); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <button id="add_color">Add a color</button> | |
| <div id='color_list'></div> | |
| <script id='color_template' type='text/template'> | |
| <div id='color_label' style='color:<%= color_name %>'><%= color_name %></div> | |
| <div id='color_bar' style='background:<%= color_name %>; color:<%= color_name %>'>.</div> | |
| <div></div> | |
| </script> | |
| </body> | |
| </html> |
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