Backbone.js model getters and setters

A tiny getters and setters plugin for Backbone.js. Originally taken from backbone.getters.setters.

The plugin is tested with Backbone version 0.9.10.

Getting started

Include Backbone (and Underscore) in your page before including this plugin.

<script src="underscore.js"></script>
<script src="backbone.js"></script>
<script src="backbone.getnset.js"></script>

RequireJS

Include RequireJS and configure it as normal, e.g.:

require.config({
    paths: {
        jquery: "lib/jquery",
        underscore: "lib/underscore",
        backbone: "lib/backbone",
        getnset: "lib/backbone.getnset"
    }
});

Define your model and include getnset as a dependency:

define("someModel", ["getnset"], function() {
    return Backbone.Model.extend({
        // see next sections for configuration
    });
});

Configuring getters

Configure your getters by adding a getter function for each attribute:

var MyModel = Backbone.Model.extend({
  getters: {
  		fullName: function() {
		    return this.get("firstName") + " " + this.get("lastName");
	    }
  },
  defaults: {
    	firstName: "James",
    	lastName: "Dean"
  }
});

Then simply call the regular get method:

var someModel = new MyModel();
someModel.get("fullName");  // => "James Dean"

Configuring setters

Configure your setters by adding a setter function for each attribute:

var MyModel = Backbone.Model.extend({
  setters: {
    	firstName: function(value) {
		      return value.toUpperCase();
	    },
      lastName: function(value) {
  	      return value.toLowerCase();
	    }
  },
  defaults: {
    	firstName: "Lady",
    	lastName: "Gaga"
  }
});

In the above example, the setters were already called by the defaults hash. The value of firstName is now "LADY" and the value of lastName is now "gaga".

You can also call the set method as usual:

someModel.set("firstName", "letters");

And now the value of firstName is "LETTERS".

You can also set multiple attributes too.

someModel.set({
		firstName: "everything",
		lastName: "NUMBERS"
});

Enjoy!

Licensing