It's a pain in the butt to have two fields, team_key and team_keys, and checking for the existence of either in every spot where it's necessary. The code would be much simpler to just have team_keys, and require that the array have a length of at least 1.
It's a pain in the butt to have two fields, team_key and team_keys, and checking for the existence of either in every spot where it's necessary. The code would be much simpler to just have team_keys, and require that the array have a length of at least 1.