This also needs to be added to the release notes both as a minor feature and as a backwards incompatible change (for the rare chance that someone has a choices_for_FOO method already defined on his models).
Introduces the Model.choices_for_FOO method allowing to extend the limit_choices_to option.
Fixed legacy code to use the decorator syntax for property.
Added release notes and backward compatibility documentation.
Thanks @charettes, @evildmp, @mjtamlyn, @bmispelon and @timgraham for feedback.