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 class.primary_key then

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

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

14 trace.debug(key, self[key], self.id)

15 end

16 else

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

18 end

19

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

21

22 -- check if there is already a rendered content

23 local selector = rendered_class:new_selector()

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

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

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

27 end

28 else

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

30 end

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

32 :optional_object_mode()

33 :exec()

34 if rendered then

35 if force_rendering then

36 rendered:destroy()

37 else

38 return rendered

39 end

40 end

41 -- create rendered_class record

42 local rendered = rendered_class:new()

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

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

45 rendered[key] = self[key]

46 end

47 else

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

49 end

50 rendered.format = "html"

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

52 rendered:save()

53 -- and return it

54 return rendered

55 end

56

57 -- returns rendered version for specific format

58 function class.object:get_content(format)

59 -- Fetch rendered_class record for specified format

60 local selector = rendered_class:new_selector()

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

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

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

64 end

65 else

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

67 end

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

69 :optional_object_mode()

70 :exec()

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

72 if not rendered then

73 rendered = self:render_content()

74 end

75 -- return rendered content

76 return rendered.content

77 end

78

79 end