User:OrenBochman/Lua MediaWiki Interface

Invocation

• {{ #invoke: module_name | function_name |arg1 | arg2 | name1 = value1 }}
• #invoke instances are isolated, globals defined in one are not available in another
• Only caches are shared

Module structure

• A module is a Lua chunk that returns an export

table

• require() provided
  • not isolated
• package library provided

Return Value

The exported function returns a wikitext string:

• Multiple return values are concatenated
• Non-string return values are converted to string
  • Metatable entry "tostring" supported

Frame Methods

• Argument access: args

local name1 = frame.args.name1

• argumentPairs()

local t = {}
for name, value in frame:argumentPairs() do
    t[name] = value
end

• getParent()
  • Provides access to the parent frame, i.e. the arguments to the template which called #invoke
• Wikitext preprocessing

frame:preprocess('{{template}}')

• Structured template invocation

frame:expandTemplate{
title = 'template',
args = {foo = foo}}

Trying it it out

local p = {}
function p.hello(frame)
return 'Hello ' .. frame.args[1]
end
return p