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Updating Views with Events, Models and Rivets
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| // ## Header View | |
| // | |
| var HeaderView = Backbone.View.extend({ | |
| // model backing the view | |
| model: new (Backbone.Model.extend({ | |
| defaults: { | |
| hasUpdate: false, | |
| } | |
| })), | |
| initialize: function() { | |
| var view = this; | |
| // receive updated information from anywhere | |
| // and set on the model | |
| $('body').on('updateHeader', function(e, data) { | |
| view.model.set(data); | |
| }); | |
| // rivet things together | |
| rivets.bind(view.$el, {status: view.model}); | |
| } | |
| }); |
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| // ## App View | |
| // | |
| var AppView = Backbone.View.extend({ | |
| events: { | |
| 'click #uptodate' : function() { | |
| this.$el.trigger('updateHeader', { hasUpdate: false } ); | |
| }, | |
| 'click #outofdate' : function() { | |
| this.$el.trigger('updateHeader', { hasUpdate: true } ); | |
| } | |
| }, | |
| ... |
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| <body> | |
| <header> | |
| <h2>Status: </h2> | |
| <ul> | |
| <li data-rv-hide="status.hasUpdate" rel='status'>Up to Date</li> | |
| <li data-rv-show="status.hasUpdate" rel='status'>I'm Out of Date</li> | |
| </ul> | |
| </header> | |
| <button id='uptodate'>Set Up to Date</button> | |
| <button id='outofdate'>Set Out of Date</button> | |
| </body> |
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