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 if self.formatting_engine then

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

52 else

53 rendered.content = self[content_field_name]

54 end

55 rendered:save()

56 -- and return it

57 return rendered

58 end

59

60 -- returns rendered version for specific format

61 function class.object:get_content(format)

62 -- Fetch rendered_class record for specified format

63 local selector = rendered_class:new_selector()

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

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

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

67 end

68 else

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

70 end

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

72 :optional_object_mode()

73 :exec()

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

75 if not rendered then

76 rendered = self:render_content()

77 end

78 -- return rendered content

79 return rendered.content

80 end

81

82 end