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August 18, 2013 01:51
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Working with Dates in Backbone.Model
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| // Date rules | |
| // 1. All dates are communicated in UTC format | |
| var Entry = Backbone.Model.extend({ | |
| defaults: { | |
| date: undefined, | |
| worked: false | |
| }, | |
| initialize: function () { | |
| var date = this.attributes.date; | |
| switch (typeof date) { | |
| case 'object': | |
| break; | |
| case 'string': | |
| date = new Date(date); | |
| break; | |
| default: | |
| break; | |
| } | |
| if (Object.prototype.toString.call(date) !== '[object Date]' || isNaN(date.getTime())) { | |
| throw new Entry.InvalidDateException(this.attributes.date); | |
| } | |
| this.set('date', date); | |
| }, | |
| local_date: function () { | |
| return this.get('date').toLocaleDateString(); | |
| }, | |
| timestamp: function () { | |
| return this.get('date').toLocaleString(); | |
| } | |
| }, { | |
| InvalidDateException: function (value) { | |
| this.value = value; | |
| this.message = 'Provided date is invalid'; | |
| this.toString = function () { | |
| return this.message + ': "' + this.value + '" (type: ' + Object.prototype.toString.call(value) + '). Date supplied must be a Date object or in UTC format.'; | |
| }; | |
| } | |
| }); | |
| // TEST | |
| function test_date (data) { | |
| try { | |
| var entry = new Entry(data); | |
| console.log(entry, entry.get('date') instanceof Date, entry.local_date(), entry.timestamp()); | |
| } catch (e) { | |
| console.error(e, e.toString()); | |
| } | |
| } | |
| test_date({ date: new Date() }); | |
| test_date({ date: 'Sun, 8 Aug 2013 00:00:00 GMT' }); | |
| test_date({}); | |
| test_date({ date: '' }); | |
| test_date({ date: 1 }); | |
| test_date({ date: true }); | |
| test_date({ date: '8 Aug 2013 01:25:07 AEST' }); | |
| test_date({ date: '8 Aug 2013' }); |
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