Classification = mondelefant.new_class() Classification.table = 'classification' Classification:add_reference{ mode = 'm1', -- many (m) Classifications can refer to one (1) Medium to = "Medium", -- name of referenced model (quoting avoids auto-loading of model here) this_key = 'medium_id', -- our key in the classification table that_key = 'id', -- other key in the medium table ref = 'medium', -- name of reference back_ref = nil, -- not used for m1 relation! default_order = nil -- not used for m1 relation! } Classification:add_reference{ mode = 'm1', -- many (m) Classifications can refer to one (1) Medium to = "Genre", -- name of referenced model (quoting avoids auto-loading of model here) this_key = 'genre_id', -- our key in the classification table that_key = 'id', -- other key in the genre table ref = 'genre', -- name of reference back_ref = nil, -- not used for m1 relation! default_order = nil -- not used for m1 relation! }