How to add a default error handler to all Backbone models?

Question

Background:

Backbone model provides an option to register a fallback error handler that will be called each time a call to the server fails and no specific handler

Answer 1

Backbone uses jQuery's AJAX method calls by default. You can hook in to this directly, instead of using Backbone:

http://api.jquery.com/ajaxError/

If that doesn't give you what you want, you can override the "fetch" method in Backbone's model:

var originalFetch = Backbone.Model.prototype.fetch;

Backbone.Model.prototype.fetch = function(options){

  var originalError = options.error;

  options.error = function(model, error){
    if (originalError){ originalError(model, error); }

    // call your global error handler here.
    App.myGlobalErrorHandler(model, error);

  }

  originalFetch.apply(this, arguments);
};