.Net Core 3.0 possible object cycle was detected which is not supported

Question

I have 2 entities that are related as one to many

public class Restaurant {
   public int RestaurantId {get;set;}
   public string Name {get;set;}
   public          


        

Answer 1

This happens because of the 2 way relationship between your data model when it comes to be JSON serialized.

You should not return your data model diectly. Map it to a new response model then return it.