I'm trying to migrate my old app to the new EF Core but I cannot find some relationships like:
HasRequired(o => o.Document).WithOptional(o => o.CancelNote);
Is there some extension methods? I cannot find on the docs.
HasRequired I think that is possible to substitute with
HasOne() method, but how about the
Other thing, according to the docs the entity not uses the
virtual keyword to create the navigation properties, how lazy load will work?
You will not find an
HasOptional equivalent method in EF7. By convention if your FK property is nullable, you navigation property will be treated as optional
modelBuilder.Entity<Blog>() .HasOne(p => p.Document) .WithOne(i => i.CancelNote) .HasForeignKey<Document>(b => b.CancelNoteForeignKey);
About your second question,EF Core (EF7) doesn't support Lazy Loading. In this link you will find the options you have now to load related entities