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    <p>I have some code I call EventedModel:</p> <pre><code>EventedModel = Backbone.Model.extend({ save: function(attrs, options) { var complete, self, success, value; self = this; options || (options = {}); success = options.success; options.success = function(resp) { self.trigger("save:success", self); if (success) { return success(self, resp); } }; complete = options.complete; options.complete = function(resp) { self.trigger("save:complete", self); if (complete) { return complete(self, resp); } }; this.trigger("save", this); value = Backbone.Model.prototype.save.call(this, attrs, options); return value; } }); </code></pre> <p>You can use it as a backbone model. But it will trigger save and save:complete. You can boost this a little:</p> <pre><code>EventedSynchroneModel = Backbone.Model.extend({ save: function(attrs, options) { var complete, self, success, value; if(this.saving){ if(this.needsUpdate){ this.needsUpdate = { attrs: _.extend(this.needsUpdate, attrs), options: _.extend(this.needsUpdate, options)}; }else { this.needsUpdate = { attrs: attrs, options: options }; } return; } self = this; options || (options = {}); success = options.success; options.success = function(resp) { self.trigger("save:success", self); if (success) { return success(self, resp); } }; complete = options.complete; options.complete = function(resp) { self.trigger("save:complete", self); //call previous callback if any if (complete) { complete(self, resp); } this.saving = false; if(self.needsUpdate){ self.save(self.needsUpdate.attrs, self.needsUpdate.options); self.needsUpdate = null; } }; this.trigger("save", this); // we are saving this.saving = true; value = Backbone.Model.prototype.save.call(this, attrs, options); return value; } }); </code></pre> <p>(untested code)</p> <p>Upon the first save call it will save the record normally. If you quickly do a new save it will buffer that call (merging the different attributes and options into a single call). Once the first save succeed, you go forward with the second save.</p>
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    1. POBackbone.js - problem when saving a model before previous save issues POST(create) instead of PUT(update) request
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    1. USJulien
    1. USJulien
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    1. COFantastic answer @Julien, but got a few questions. As formatting of comments in Stackoverflow is crap, excuse the fact that I have added numerous comments for each question below:
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      1. USMatthew O'Riordan
    2. COQuestion 1: Shouldn't the code `if (complete) { return success(self, resp); }` read `if (complete) { return complete(self, resp); }`
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      1. USMatthew O'Riordan
    3. COQuestion 2: If an option callback for complete is passed to the original save function, then surely the update will never get called as you are calling return before you execute the needsUpdate code?
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      1. USMatthew O'Riordan
 

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