Fix a bug which caused the handler not to expose models from a has-many relationship
Fix a bug which caused the handler not to expose models from a has-many relationship

mfn/laravel-jsonapi,ninjapenguin/laravel-jsonapi,echo-it/laravel-jsonapi,egeriis/laravel-jsonapi,dronemill/laravel-jsonapi,IAmJulianAcosta/jsonapi-laravel,jthoms1/laravel-jsonapi