1 --[[--

2 ui.field.select{

3 ... -- generic ui.field.* arguments, as described for ui.autofield{...}

4 foreign_records = foreign_records, -- list of records to be chosen from, or function returning such a list

5 foreign_id = foreign_id, -- name of id field in foreign records

6 foreign_name = foreign_name, -- name of field to be used as name in foreign records

7 format_options = format_options -- format options for format.string

8 selected_record = selected_record -- id of (or reference to) record which is selected (optional, overrides "value" argument when not nil)

9 disabled_records = disabled_records -- table with ids of (or references to) records that should be disabled (stored as table keys mapped to true)

10 }

11

12 This function inserts a select field in the active slot. For description of the generic field helper arguments, see help for ui.autofield{...}.

13

14 --]]--

15

16 function ui.field.select(args)

17 ui.form_element(args, {fetch_value = true}, function(args)

18 local foreign_records = args.foreign_records

19 if type(foreign_records) == "function" then

20 foreign_records = foreign_records(args.record)

21 end

22 if args.readonly then

23 local name

24 for idx, record in ipairs(foreign_records) do

25 if record[args.foreign_id] == args.value then

26 name = record[args.foreign_name]

27 break

28 end

29 end

30 ui.tag{

31 tag = args.tag,

32 attr = args.attr,

33 content = format.string(name, args.format_options)

34 }

35 else

36 local attr = table.new(args.attr)

37 attr.name = args.html_name

38 ui.tag{

39 tag = "select",

40 attr = attr,

41 content = function()

42 if args.nil_as then

43 ui.tag{

44 tag = "option",

45 attr = { value = "" },

46 content = format.string(

47 args.nil_as,

48 args.format_options

49 )

50 }

51 end

52 local one_selected = false

53 for idx, record in ipairs(foreign_records) do

54 local key = record[args.foreign_id]

55 local selected = false

56 if not one_selected then

57 if args.selected_record == nil then

58 if args.value == key then

59 selected = true

60 end

61 else

62 if args.selected_record == record or args.selected_record == key then

63 selected = true

64 end

65 end

66 one_selected = selected

67 end

68 local disabled = false

69 if args.disabled_records then

70 if args.disabled_records[record] or args.disabled_records[key] then

71 disabled = true

72 end

73 end

74 ui.tag{

75 tag = "option",

76 attr = {

77 value = key,

78 disabled = disabled and "disabled" or nil,

79 selected = selected and "selected" or nil

80 },

81 content = format.string(

82 record[args.foreign_name],

83 args.format_options

84 )

85 }

86 end

87 end

88 }

89 end

90 end)

91 end