Nate has published a nice component which makes the creation of an input field with Ajax autocompletion very easy. In fact, it is (almost) as easy as creating a simple input field.
What do you have to do? Put the component to your app/controllers/components directory. In your controller you have to include the component with:
var $components = array('Autocomplete');
Also make sure that you have defined the Ajax helper in your controller. I usually add it to the helpers array in my AppController (app/app_controller.php):
After that, you can add the autocompleter to your view.
<?php echo $ajax->autocomplete('Company/name'); ?>
One condition must be fullfilled to make this code snippet work: the controller which renders the view must have access to the appropriate model, in our example to the Company model.
That’s it :)
Thanks to Nate for the hint.