title: What can I put in _schema Model field to build a custom tableless Model?
body: <p>I already read this "trick" in the cookbook: <a href="http://book.cakephp.org/2.0/en/models/model-attributes.html#usetable" rel="nofollow">http://book.cakephp.org/2.0/en/models/model-attributes.html#usetable</a></p>
  
  <p>Now I would like to build a custom schema for my model, but there isn't the format for this array. For example, I don't know what should I put for a bool type: "boolean" or "bool"?</p>
  
  <p>If I want to obtain a "select box" when I use $this->Form->input, what type should I put? Should I create a hasMany relationship (with 2 tableless models)?</p>