1 function model.has_rendered_content(class, rendered_class, content_field_name)

2

3 local content_field_name = content_field_name or 'content'

4

5 -- render content to html, save it as rendered_class and return it

6 function class.object:render_content(force_rendering)

7 -- local draft for update

8

9 local selector = class:new_selector()

10

11 if type(class.primary_key) == "table" then

12 for i, key in ipairs(class.primary_key) do

13 selector:add_where{ "$ = ?", { key }, self[key] }

14 end

15 else

16 selector:add_where{ "id = ?", self.id }

17 end

18

19 local lock = selector:single_object_mode():for_update():exec()

20

21 -- check if there is already a rendered content

22 local selector = rendered_class:new_selector()

23 if type(class.primary_key) == "table" then

24 for i, key in ipairs(class.primary_key) do

25 selector:add_where{ "$.$ = ?", { rendered_class.table }, { key }, self[key] }

26 end

27 else

28 selector:add_where{ "$." .. class.table .. "_id = ?", { rendered_class.table }, self.id }

29 end

30 local rendered = selector:add_where{ "format = 'html'" }

31 :optional_object_mode()

32 :exec()

33 if rendered then

34 if force_rendering then

35 rendered:destroy()

36 else

37 return rendered

38 end

39 end

40 -- create rendered_class record

41 local rendered = rendered_class:new()

42 if type(class.primary_key) == "table" then

43 for i, key in ipairs(class.primary_key) do

44 rendered[key] = self[key]

45 end

46 else

47 rendered[class.table .. "_id"] = self.id

48 end

49 rendered.format = "html"

50 rendered.content = format.wiki_text(self[content_field_name], self.formatting_engine)

51 rendered:save()

52 -- and return it

53 return rendered

54 end

55

56 -- returns rendered version for specific format

57 function class.object:get_content(format)

58 -- Fetch rendered_class record for specified format

59 local selector = rendered_class:new_selector()

60 if type(class.primary_key) == "table" then

61 for i, key in ipairs(class.primary_key) do

62 selector:add_where{ "$.$ = ?", { rendered_class.table }, { key }, self.id }

63 end

64 else

65 selector:add_where{ class.table .. "_id = ?", self.id }

66 end

67 local rendered = selector:add_where{ "format = ?", format }

68 :optional_object_mode()

69 :exec()

70 -- If this format isn't rendered yet, render it

71 if not rendered then

72 rendered = self:render_content()

73 end

74 -- return rendered content

75 return rendered.content

76 end

77

78 end