1 Medium = mondelefant.new_class()

2 Medium.table = 'medium'

3

4 Medium:add_reference{

5 mode = 'm1', -- many (m) Medium entries can refer to one (1) MediaType

6 to = "MediaType", -- name of referenced model (quoting avoids auto-loading here)

7 this_key = 'media_type_id', -- own key in medium table

8 that_key = 'id', -- other key in media_type table

9 ref = 'media_type', -- name of reference

10 back_ref = nil, -- not used for m1 relation!

11 default_order = nil -- not used for m1 relation!

12 }

13

14 Medium:add_reference{

15 mode = '1m', -- one (1) Medium has many (m) Classifications

16 to = "Classification", -- name of referenced model (quoting avoids auto-loading here)

17 this_key = 'id', -- own key in medium table

18 that_key = 'medium_id', -- other key in classification table

19 ref = 'classifications', -- name of reference

20 back_ref = 'medium', -- each autoloaded classification automatically refers back to the Medium

21 default_order = '"genre_id"' -- order classifications by SQL expression "genre_id"

22 }

23

24 Medium:add_reference{

25 mode = 'mm', -- many (m) Media belong to many (m) Genres

26 to = "Genre", -- name of referenced model (quoting avoids auto-loading here)

27 this_key = 'id', -- (primary) key of medium table

28 that_key = 'id', -- (primary) key of genre talbe

29 connected_by_table = 'classification', -- table connecting media with genres

30 connected_by_this_key = 'medium_id', -- key in classification table referencing media

31 connected_by_that_key = 'genre_id', -- key in classification table referencing genres

32 ref = 'genres', -- name of reference

33 back_ref = nil, -- not used for mm relation!

34 default_order = '"genre"."name", "genre"."id"' -- mm references need qualified names in SQL order expression!

35 }

36

37 Medium:add_reference{

38 mode = '1m', -- one (1) Medium has many (m) Tracks

39 to = "Track", -- name of referenced model (quoting avoids auto-loading here)

40 this_key = 'id', -- own key in medium table

41 that_key = 'medium_id', -- other key in track table

42 ref = 'tracks', -- name of reference

43 back_ref = 'medium', -- each autoloaded classification automatically refers back to the Medium

44 default_order = '"position"' -- order tracks by SQL expression "position"

45 }