Module:Yesno: Difference between revisions

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stop making the default "default" value true, as we run into problems if you need to distinguish between false and nil
Matt Pijoan (talk | contribs)
m 1 revision imported
 
(8 intermediate revisions by 3 users not shown)
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-- Function allowing for consistent treatment of boolean-like wikitext input.
-- Function allowing for consistent treatment of boolean-like wikitext input.
-- It works similarly to the template {{yesno}}.
-- It works similarly to the template {{yesno}}.
return function (val, default)
return function (val, default)
    val = type(val) == 'string' and mw.ustring.lower(val) or val -- put in lower case
-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
    if val == nil then
-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
        return nil
-- following line.
    elseif val == false or val == 'no' or val == 'n' or val == 'false' or tonumber(val) == 0 then
val = type(val) == 'string' and val:lower() or val
        return false
if val == nil then
    elseif val == true or val == 'yes' or val == 'y' or val == 'true' or tonumber(val) == 1 then
return nil
        return true
elseif val == true
    else
or val == 'yes'
        return default
or val == 'y'
    end
or val == 'true'
or val == 't'
or val == 'on'
or tonumber(val) == 1
then
return true
elseif val == false
or val == 'no'
or val == 'n'
or val == 'false'
or val == 'f'
or val == 'off'
or tonumber(val) == 0
then
return false
else
return default
end
end
end

Latest revision as of 07:50, 9 January 2019

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

-- Function allowing for consistent treatment of boolean-like wikitext input.
-- It works similarly to the template {{yesno}}.

return function (val, default)
	-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
	-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
	-- following line.
	val = type(val) == 'string' and val:lower() or val
	if val == nil then
		return nil
	elseif val == true 
		or val == 'yes'
		or val == 'y'
		or val == 'true'
		or val == 't'
		or val == 'on'
		or tonumber(val) == 1
	then
		return true
	elseif val == false
		or val == 'no'
		or val == 'n'
		or val == 'false'
		or val == 'f'
		or val == 'off'
		or tonumber(val) == 0
	then
		return false
	else
		return default
	end
end