CakePHP 1.2: "Model/field" in formhelper deprecated

As cakebaker states:

The use of "Model/field" in the formhelper has been deprecated in CakePHP 1.2. In CakePHP 1.1 you would call:

$form->input('Post/title');

In CakePHP 1.2 this has to be written like:

$form->input('Post.title');