Displaying 1 result from an estimated 1 matches for "sane_gender".
2006 Mar 02
5
Two foreign keys on the same column?
Let''s say I have three hypothetical MySQL tables:
? people, with columns id, gender, and source_id
belongs_to :boys and :girls
? boys, with columns id and name
has_many :people
? girls, with columns id and name
has_many :people
The gender column in people specifies which of the two source tables the
source_id refers to. For example, if we have values:
1, boy, 1
in people,