On the Facebook Developer blog Matt Huggins published a tutorial which explains the steps you have to perform to build your first Facebook application with CakePHP. Thanks to that tutorial it should be rather easy to build such an application (I haven’t tried it myself yet).
PS: It seems as if today two new versions of CakePHP get released. It is already announced on the CakePHP website,
but the files are not yet available the files are now available for download on CakeForge. Instead of the long awaited beta release of CakePHP 1.2 it is “only” a pre-beta release.