Allowing "new" Tags with the "Prototype"

Previouslywe added twodummytags toour task in the controller.

Now let the usersadd as many tag forms as they need directly in the browser.

This will be done through a bitof JavaScript.

Previouslyyou added two tags toyour task in the controller. Now let the users

add as many tag forms as they need directly in the browser. This requires a bit

of JavaScript code.

But first, we need to let the form collection know that instead of exactly two,

it will receive an *unknown* number of tags. This is done with the

But first, you need to let the form collection know that instead of exactly two,

it will receive an *unknown* number of tags. Otherwise, you'll see a

*"This form should not contain extra fields"* error. This is done with the

``allow_add`` option::