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view framework/env/param/get_list.lua @ 405:c5f9a1b2f225

Updated year of copyright notice
author jbe
date Wed Jan 06 02:54:45 2016 +0100 (2016-01-06)
parents 209d378c0a3b
children
line source
1 --[[--
2 values = -- list of values casted to the chosen param_type
3 param.get_list(
4 key, -- name of the parameter without "[]" suffix
5 param_type -- desired type of the returned values
6 )
8 Same as param.get(...), but used for parameters which contain a list of values. For external GET/POST parameters the parameter name gets suffixed with "[]".
10 --]]--
12 function param.get_list(key, param_type)
13 local param_type = param_type or atom.string
14 if param._exchanged then
15 local values = param._exchanged.params[key] or {}
16 if type(values) ~= "table" then
17 error("Parameter has unexpected type.")
18 end
19 for idx, value in ipairs(values) do
20 if not atom.has_type(value, param_type) then
21 error("Element of parameter list has unexpected type.")
22 end
23 end
24 return values
25 else
26 local format_info = request.get_param{ name = key .. "__format" }
27 local parser = param._get_parser(format_info, param_type)
28 local raw_values = request.get_param{ name = key .. "[]", multiple = true }
29 local values = {}
30 if raw_values then
31 for idx, value in ipairs(raw_values) do
32 values[idx] = parser(raw_values[idx])
33 end
34 end
35 return values
36 end
37 end

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