can/model/local/local.js

MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.

steal('can/model', 'jquery/lang/object', function () {

	//!steal-remove-start
	can.dev.warn("can/model/local is a deprecated plugin and will be removed in a future release.");
	//!steal-remove-end

	can.Model('can.Model.Local', {
		compare: {},
		identifier: function () {
			return parseInt(100000 * Math.random());
		},
		localStore: function (cb) {
			var name = this.shortName,
				data = $.evalJSON(window.localStorage[name] || (window.localStorage[name] = '{}')),
				res = cb.call(this, data);
			if (res !== false) {
				window.localStorage[name] = $.toJSON(data);
			}
		},
		findAll: function (params, success) {
			var instances = [],
				def = $.Deferred()
					.then(success);
			this.localStore(function (objs) {
				for (var o in objs) {
					if ($.Object.same(objs[o], params, this.compare)) {
						instances.push(new this(objs[o]));
					}
				}
			});
			return def.resolve(instances);
		},
		findOne: function (id, success) {
			var idProp = this.id,
				def = $.Deferred()
					.then(success),
				one;
			this.localStore(function (objs) {
				for (var o in objs) {
					if (objs[o][idProp] === id) {
						one = new this(objs[id]);
						break;
					}
				}
			});
			return def.resolve(one);
		},
		destroyAll: function (params, success) {
			var def = $.Deferred()
				.then(success);
			this.localStore(function (objs) {
				$.each(params, function () {
					delete objs[this];
				});
			});
			return def.resolve({});
		},
		destroy: function (id, success) {
			return this.destroyAll([id], success);
		},
		create: function (attrs, success) {
			var idProp = this.id,
				def = $.Deferred()
					.then(success);
			this.localStore(function (objs) {
				attrs[idProp] = attrs[idProp] || this.identifier();
				objs[attrs[idProp]] = attrs;
			});
			return def.resolve(attrs);
		}
	});
});