Module:Data/sandbox
 | This is the module sandbox page for Module:Data (diff). |
 | This Lua module is used on approximately 125,000 pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
 | This module is rated as ready for general use. It has reached a mature state, is considered relatively stable and bug-free, and may be used wherever appropriate. It can be mentioned on help pages and other Wikipedia resources as an option for new users. To minimise server load and avoid disruptive output, improvements should be developed through sandbox testing rather than repeated trial-and-error editing. |
This module allows wikitext to read values from data modules.
Usage
[edit]{{#invoke:Data|Module:ModuleName|key1|key2|key3|...}}
Read data value key1.key2.key3 from Module:ModuleName.
local mt = {}
function mt.__index(t, k)
return function(frame)
local success, data = pcall(mw.loadData, k)
if not success then
success, data = pcall(mw.loadJsonData, k)
if not success then
error("'" .. k .. "' is not a valid data page")
end
end
for i, v in ipairs(frame.args) do
local ty = type(data)
if ty ~= 'table' then
local args = {}
for j = 1, i - 1 do
args[j] = frame.args[j]
end
if frame.args.softfail then
return '<span class="error">[[Category:Pages with failed Module:Data lookups]]Error: Tried to read index "' .. mw.text.nowiki(v) .. '" of mw.loadData("' .. mw.text.nowiki(k) .. '").' .. mw.text.nowiki(table.concat(args, '.')) .. ', which is a ' .. ty .. '</span>'
else
error('Tried to read index "' .. v .. '" of mw.loadData("' .. k .. '").' .. table.concat(args, '.') .. ', which is a ' .. ty)
end
end
local nextdata = data[v]
if nextdata == nil and tonumber(v) then
data = data[tonumber(v)]
else
data = nextdata
end
end
return data
end
end
return setmetatable({}, mt)