Module:Data/sandbox: Difference between revisions
Content deleted Content added
Theoretical implementation for accepting json data on top of standard module data |
Fix numerical indexing (attempt to use tonumber if the string key returns nil) |
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end |
end |
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end |
end |
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local nextdata = data[v] |
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if nextdata == nil and tonumber(v) then |
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data = data[tonumber(v)] |
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else |
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data = nextdata |
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end |
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i = i + 1 |
i = i + 1 |
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end |
end |
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Revision as of 11:50, 5 October 2023
 | This is the module sandbox page for Module:Data (diff). |
 | This Lua module is used on approximately 154,000 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 form and is thought to be relatively bug-free and ready for use wherever appropriate. It is ready to mention on help pages and other Wikipedia resources as an option for new users to learn. To reduce server load and bad output, it should be improved by sandbox testing rather than repeated trial-and-error editing. |
 | This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing. |
This module allows wikitext to read values from data modules.
Usage
{{#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
local i = 1
for _,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
i = i + 1
end
return data
end
end
return setmetatable({}, mt)