Swift how to add 5 star ratings for users to vote using Firebase

Question

I\'m creating a restaurant rating app in Swift that allows its users to rate restaurants on a 5-star rating scale (just like Zomato and Yelp) . I will be using Firebase to store

Answer 1

I would use CoreData to save if user already vote.

1. When the user rate one of the restaurant, just create a new record in core data with the restaurant's name or ID.

2. Before every vote I should check if data is existing or not. If not, user can vote.