Module:Room features: Difference between revisions

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@@ Line 16: / Line 16: @@
 	return {
 		'[[Has subobject::<q>[[Located in::' .. location .. ']]</q>]]',
-		'category=' .. category,
+		'[[Category:' .. category,
 		'?#-',
 		'?Name',
@@ Line 29: / Line 29: @@
 	for _,cat in ipairs(categories) do
-		ret = ret .. '===' .. cat .. '===\n'
 		local query = mw.smw.ask(base_query(location, cat))
+		if query ~= nil then
+			ret = ret .. '===' .. cat .. '===\n'
-		local gallery = '<gallery>\n'
-		for i,v in ipairs(query or {}) do
+			local gallery = '<gallery>\n'
-			gallery = gallery .. (v.Image or 'File:Section anchor light.svg') .. '|' .. '[[' .. v[1] .. '|' .. v.Name .. ']]\n'
+			for i,v in ipairs(query or {}) do
+				gallery = gallery .. (v.Image or 'File:Section anchor light.svg') .. '|' .. '[[' .. v[1] .. '|' .. v.Name .. ']]\n'
+			end
+			gallery = gallery .. '</gallery>\n\n'
+			mw.log(gallery)
+			ret = ret .. frame:preprocess(gallery)
 		end
-		gallery = gallery .. '</gallery>\n'
-		ret = ret .. frame:preprocess(gallery)
 	end
+	return ret
 end

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