1 --[[--

2 output = -- document/data to be sent to the web browser

3 slot.render_layout(

4 layout_ident -- if set, selects layout to be used; otherwise layout set by slot.set_layout(...) is used

5 )

6

7 This function returns the selected layout after replacing all slot placeholders with the respective slot contents. If slot.set_layout(...) was called with nil as first argument, then no layout will be used, but only the contents of the slot named "data" are returned.

8

9 --]]--

10

11 function slot.render_layout(layout_ident)

12 local layout_ident = layout_ident or slot._current_layout

13 if layout_ident then

14 local layout_file = assert(io.open(

15 encode.file_path(

16 WEBMCP_BASE_PATH,

17 'app',

18 WEBMCP_APP_NAME,

19 '_layout',

20 layout_ident .. '.html'

21 ),

22 'r'

23 ))

24 local layout = assert(layout_file:read("*a"))

25 assert(layout_file:close())

26

27 -- render layout

28 layout = string.gsub(layout, "__BASEURL__/?", request.get_relative_baseurl()) -- TODO: find a better placeholder than __BASEURL__ ?

29 layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOT +([^ ]+) *%-%->',

30 function(slot_ident)

31 if #slot.get_content(slot_ident) > 0 then

32 return '<div class="slot_' .. slot_ident .. '" id="slot_' .. slot_ident .. '">' .. slot.get_content(slot_ident).. '</div>'

33 else

34 return ''

35 end

36 end

37 )

38 layout = string.gsub(layout, '<!%-%- *WEBMCP +SLOTNODIV +([^ ]+) *%-%->',

39 function(slot_ident)

40 if #slot.get_content(slot_ident) > 0 then

41 return slot.get_content(slot_ident)

42 else

43 return ''

44 end

45 end

46 )

47 return layout

48 else

49 return slot.get_content("data")

50 end

51 end