Summary

In this chapter, you learned about Core Data and its different components. You created data models for your app named Review and RestaurantPhoto, and you created the corresponding model objects for your app named ReviewItem and RestaurantPhotoItem. After that, you implemented CoreDataManager to set up Core Data components for your app.

You updated ReviewFormViewController and PhotoFilterViewController to save reviews and photos together with a restaurant identifier to the persistent store. You modified RestaurantDetailViewController to load reviews for a particular restaurant based on the restaurant identifier and displayed them in a collection view. You also calculated and displayed the overall rating for that restaurant.

Finally, on your own, you modified RestaurantDetailViewController to load photos for a particular restaurant based on the restaurant identifier and displayed them in a collection view.

You now have a basic understanding of how Core Data works. You...