Mapping two entities to 1 table for backwards compatibility?

Question

Doctrine ORM

Conditionally we have entity Member, NewMember.

The old code is deprecated but still used by the application and also has some common fields.

1. You can do NewMember -> extends -> Member
   
2. or NewMember | Member -> extends AbstractMember
   
3. or just write everything over again and just specify the same table in the mapping.
   

if everything works, the old entity can be slowly cut out.

How would you make the development of a new model, an entity with backwards compatibility?

Answer 1

If you are going to remove the Member, then obviously you need to make a new entity separately. For a while it will duplicate the old entity