Attribution and re-use
This module (along with its documentation page) has been adapted from Wikipedia released under the Creative Commons Attribution-ShareAlike License 4.0.
--[[
We perform the actual check for whether this is a preview here since
preprocessing is relatively expensive.
]]
local frame = mw.getCurrentFrame()
local function is_preview()
local revision_id = frame:preprocess('{{REVISIONID}}')
-- {{REVISIONID}} is usually the empty string when previewed.
-- I don't know why we're checking for nil but hey, maybe someday things
-- would have broken
return revision_id == nil or revision_id == ''
end
return {
preview = is_preview(),
warning_infrastructure = '%s<div class="preview-warning"><strong>Preview warning:</strong> %s</div>',
missing_warning = 'The template has no warning text. Please add a warning.'
}