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

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 elseif class.primary_key then

16 selector:add_where{ "$ = ?", { class.primary_key }, self[class.primary_key] }

17 else

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

19 end

20

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

22

23 -- check if there is already a rendered content

24 local selector = rendered_class:new_selector()

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

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

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

28 end

29 elseif class.primary_key then

30 selector:add_where{ "$." .. primary_key .. " = ?", { rendered_class.table }, self[class.primary_key] }

31 else

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

33 end

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

35 :optional_object_mode()

36 :exec()

37 if rendered then

38 if force_rendering then

39 rendered:destroy()

40 else

41 return rendered

42 end

43 end

44 -- create rendered_class record

45 local rendered = rendered_class:new()

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

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

48 rendered[key] = self[key]

49 end

50 elseif class.primary_key then

51 rendered[primary_key] = self[class.primary_key]

52 else

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

54 end

55 rendered.format = "html"

56 if self.formatting_engine then

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

58 else

59 rendered.content = self[content_field_name]

60 end

61 rendered:save()

62 -- and return it

63 return rendered

64 end

65

66 -- returns rendered version for specific format

67 function class.object:get_content(format)

68 -- Fetch rendered_class record for specified format

69 local selector = rendered_class:new_selector()

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

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

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

73 end

74 elseif class.primary_key then

75 selector:add_where{ primary_key .. " = ?", self[class.primary_key] }

76 else

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

78 end

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

80 :optional_object_mode()

81 :exec()

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

83 if not rendered then

84 rendered = self:render_content()

85 end

86 -- return rendered content

87 return rendered.content

88 end

89

90 end