20 lines
529 B
Plaintext
20 lines
529 B
Plaintext
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/* Ensure a Collection is fetched and has entries before running a block of code. */
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_.extend(Backbone.Collection.prototype, {
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ensureFetched: function(callback) {
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if (this.length == 0 || this._alreadyEnsureFetched) {
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var _this = this;
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var _refresher = function() {
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_this.unbind('refresh', _refresher);
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callback.apply(_this);
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_this._alreadyEnsureFetched = true;
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};
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this.bind('refresh', _refresher);
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this.fetch();
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} else {
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callback.apply(this);
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}
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}
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});
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