benpickles/gist:353675

## gistfile1.htm
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
<script src="http://github.com/documentcloud/underscore/raw/master/underscore-min.js"></script>
<script src="http://github.com/benpickles/js-model/raw/master/dist/js-model-0.8.1.min.js"></script>
<script>
var Post = Model('post', {}, {
  validate: function() {
    if (this.attr("title") != "Bar") {
      this.errors.add("title", "should be Bar")
    }
  }
})

var post = new Post()
post.attr("title", "Foo")

console.log('expects false: ', post.valid())
console.log('expects 1: ', post.errors.size())
console.log('expects ["should be Bar"]: ', post.errors.on("title"))
console.log('expects { title: ["should be Bar"] }: ', post.errors.all())

post.attr("title", "Bar")

console.log('expects true: ', post.valid())
console.log('expects 0: ', post.errors.size())
console.log('expects []: ', post.errors.on("title"))
console.log('expects {}: ', post.errors.all())
</script>
</head>
<body>
</body>
</html>
	<html>
	<head>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
	<script src="http://github.com/documentcloud/underscore/raw/master/underscore-min.js"></script>
	<script src="http://github.com/benpickles/js-model/raw/master/dist/js-model-0.8.1.min.js"></script>
	<script>
	var Post = Model('post', {}, {
	validate: function() {
	if (this.attr("title") != "Bar") {
	this.errors.add("title", "should be Bar")
	}
	}
	})

	var post = new Post()
	post.attr("title", "Foo")

	console.log('expects false: ', post.valid())
	console.log('expects 1: ', post.errors.size())
	console.log('expects ["should be Bar"]: ', post.errors.on("title"))
	console.log('expects { title: ["should be Bar"] }: ', post.errors.all())

	post.attr("title", "Bar")

	console.log('expects true: ', post.valid())
	console.log('expects 0: ', post.errors.size())
	console.log('expects []: ', post.errors.on("title"))
	console.log('expects {}: ', post.errors.all())
	</script>
	</head>
	<body>
	</body>
	</html>