Module:CRTGallery

Documentation for this module may be created at Module:CRTGallery/doc

local p = {}

function p.gallery(frame)
    local args = frame:getParent().args
    local mode = args.mode or "packed"
    local heights = args.heights or "160"
    local pageName = args.page
    if not pageName or pageName == "" then
        pageName = mw.title.getCurrentTitle().fullText
    end

    -- Use mw.smw.ask to query Has images property
    local queryResult = mw.smw.ask("[[" .. pageName .. "]]|?Has images|mainlabel=-|limit=50")

    if not queryResult or type(queryResult) ~= "table" or #queryResult == 0 then
        return ""
    end

    local lines = {}
    for _, row in ipairs(queryResult) do
        local images = row["Has images"]
        if images then
            -- images may be a single string or a table of strings
            if type(images) == "string" then
                images = { images }
            end
            for _, img in ipairs(images) do
                local trimmed = mw.text.trim(tostring(img))
                if trimmed ~= "" then
                    if not trimmed:match("^[Ff]ile:") then
                        trimmed = "File:" .. trimmed
                    end
                    table.insert(lines, trimmed)
                end
            end
        end
    end

    if #lines == 0 then return "" end

    local wikitext = string.format(
        '<gallery mode="%s" heights="%s">\n%s\n</gallery>',
        mode, heights, table.concat(lines, "\n")
    )

    return frame:preprocess(wikitext)
end

return p