search for: head_quarter_id

...er one and only one of the buildings is the company''s headquarter. Thinking in terms of the database, I''d prefer to add an owning association, an thus have a has_many :buildings plus a has_one :headquarter, :class => "Building" assocation, where the foreign key "head_quarter_id" should be assigned to the company and refer to the buildings table. I''d prefer that to tagging one building with a headquarter-flag because there''s the advantage of only being forced to change one dataset (the company, more exactly its headquarter_id), instead of changing tw...