Clever Geek Handbook

Baseline ID changed

Does the fetch model behavior, in particular the setting of the model ID, changed between 1.1.0 and 1.1.2?

I have checked the changelog and found nothing suitable.

The following functions no longer work:

var Wibble = Backbone.Model.extend({
    urlRoot: 'rest/wibble',
    idAttribute: 'wibbleId'
 });

var model = new Wibble();
model.id = 1;
model.fetch()

He requests / rests / wibble, not / rest / wibble / 1 as he is used to.

Examples: I used url () rather than fetch () to demonstrate

jsbin for version 1.1.0

jsbin for version 1.1.2

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1 answer


The model creates its url by adding /[id]

when the model is not new:

url: function() {
  var base = _.result(this, 'urlRoot') ||
    _.result(this.collection, 'url') ||
    urlError();
  if (this.isNew()) return base;
  return base.replace(/([^\/])$/, '$1/') + encodeURIComponent(this.id);
}

but it seems that model.isNew

changed between 1.1.0 and 1.1.2

  • Backbone 1.1.0

    isNew: function() {
  return this.id == null;
},

  • Backbone 1.1.2

    isNew: function() {
  return !this.has(this.idAttribute);
},


Now the check only considers the property idAttribute

and the property id

more.

The setup idAttribute

, as in example 1.1.2, is probably the safest bet:

model.set('wibbleId', 123);
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