webmcp
view framework/env/format/string.lua @ 55:594a85118cb7
Bugfix in <db_selector>:add_from(...) and <db_selector>:left_join(...)
author | jbe |
---|---|
date | Sun Dec 18 21:14:43 2011 +0100 (2011-12-18) |
parents | 9fdfb27f8e67 |
children | 0c4841af07a5 |
line source
1 --[[--
2 text = -- a string
3 format.string(
4 value, -- any value where tostring(value) gives a reasonable result
5 {
6 nil_as = nil_text -- text to be returned for a nil value
7 }
8 )
10 Formats a value as a text by calling tostring(...), unless the value is nil, in which case the text returned is chosen by the 'nil_as' option.
12 --]]--
14 function format.string(str, options)
15 local options = options or {}
16 if str == nil then
17 return options.nil_as or ""
18 else
19 return tostring(str)
20 end
21 end