1 local id = param.get_id(atom.string)

2

3 if not id then

4 id = "index"

5 else

6 -- sanity check. Only allow letters, digits and _-

7 id = string.match(id, "[%a%d_-]*")

8 end

9

10 if not app.html_title.title then

11 app.html_title.title = _("Help #{id}", { id = id })

12 end

13

14 local basepath = request.get_app_basepath()

15 local found_help = false

16 -- we try to load any help file that fits best

17 for x,lang in ipairs{locale.get("lang"), "en"} do

18 local file_name = basepath .. "/locale/help/" .. id .. "." .. lang .. ".txt.html"

19 local file = io.open(file_name)

20 if file ~= nil then

21 local help_text = file:read("*a")

22 if #help_text > 0 then

23 found_help = true

24 ui.container{

25 attr = { class = "wiki" },

26 content = function()

27 slot.put(help_text)

28 end

29 }

30 break

31 end

32 end

33 end

34

35 if not found_help then

36 ui.field.text{ value = _("Missing help text: #{id}.#{lang}.txt", { id = id, lang = locale.get("lang") }) }

37 end