Module:CallTemplate

The code for this module can be found below its documentation. You can edit the code, edit the documentation, or purge the cache.

This module and its documentation are slightly modified versions what Google's AI Overview returned for the prompt "simple Lua module to call a MediaWiki template for any number of input parameters". They will both be improved "soon".

Explanation

• local p = {}: Initializes an empty table p which will hold the module's functions.
• function p.call(frame): Defines a function call within the table p. This function will be called by {{#invoke:CallTemplate|call}}. The frame object provides access to arguments and other MediaWiki functionalities.
• local args = frame.args: Retrieves the arguments passed to the {{#invoke:}} call as a table.
• local templateName = args[1]: Assumes the first positional argument is the name of the template to be called.
• local templateArgs = {}: Creates an empty table to store the arguments intended for the target template.
• for i, v in ipairs(args) do ... end: Iterates through the arguments passed to the module. It skips the first argument (the template name) and adds the rest to templateArgs.
• local templateCall = "{{" .. templateName ... "}}": Constructs the wikitext string for the template call, dynamically adding the arguments.
• return frame:preprocess(templateCall): This is the core of calling the template. frame:preprocess() instructs MediaWiki to parse and expand the provided wikitext string, effectively calling the specified template with the collected arguments.

Usage in Wikitext

{{#invoke:CallTemplate|call|MyTemplate|Parameter1|Parameter2|NamedParameter=Value}}

This example would call Template:MyTemplate with Parameter1, Parameter2, and NamedParameter=Value as its arguments.

(end of Google's output)

Code

[Edit module code]

---

local p = {}

function p.call(frame)
    local args = frame.args -- Get arguments passed to the #invoke call

    local templateName = args[1] -- Assume the first argument is the template name
    if not templateName then
        return "Error: No template name provided."
    end

    local templateArgs = {}
    for i, v in ipairs(args) do
        if i > 1 then -- Skip the first argument (template name)
            table.insert(templateArgs, v)
        end
    end

    -- Construct the template call string
    local templateCall = "{{" .. templateName
    for i, v in ipairs(templateArgs) do
        templateCall = templateCall .. "|" .. v
    end
    templateCall = templateCall .. "}}"

    -- Expand the template call
    return frame:preprocess(templateCall)
end

return p