Demo VisualData/Lua - Revision history

Admin at 14:33, 31 August 2025

2025-08-31T14:33:08Z

2025-08-31T14:32:32Z

← Older revision		Revision as of 14:32, 31 August 2025
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	-- local args = frame:getParent().args		-- local args = frame:getParent().args

			-- the VisualData query is called from here
	local ret = mw.visualdata.query( 'Book', '[[title::+]]', {'title'}, {} )		local ret = mw.visualdata.query( 'Book', '[[title::+]]', {'title'}, {} )

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	===2) perform the query on a wiki article and then process the result using Lua===		===2) perform the query on a wiki article and then process the result using Lua===


			<pre>
	{{#visualdataquery_: [[title::+]]		{{#visualdataquery_: [[title::+]]
	\|schema=Book		\|schema=Book
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	\|module=Handle query		\|module=Handle query
	}}		}}
			</pre>

	~~{{#visualdataquery: [[title::+]]~~
	~~\|schema=Book~~
	~~\|?cover~~
	~~\|?title~~
	~~\|?authors/name~~
	~~\|?authors/email~~
	}}

	<pre>		<pre>
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			Template: [[Template:Handle query]]

			Module: [[Module:Handle query]]

2025-08-31T14:28:49Z

← Older revision		Revision as of 14:28, 31 August 2025
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	===2) perform the query on a wiki article and then process the result using Lua===		===2) perform the query on a wiki article and then process the result using Lua===

			{{#visualdataquery_: [[title::+]]
			\|schema=Book
			\|?cover
			\|?title
			\|?authors/name
			\|?authors/email
			\|format=lua
			\|module=Handle query
			}}

			{{#visualdataquery: [[title::+]]
			\|schema=Book
			\|?cover
			\|?title
			\|?authors/name
			\|?authors/email
			}}

	<pre>		<pre>

2025-08-31T14:25:43Z

← Older revision		Revision as of 14:25, 31 August 2025
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			There are 2 ways to use Lua.

			===1) perform the query directly from Lua, as follows:===

			<pre>
			local p = {}

			function p.main(frame)
			-- local args = frame:getParent().args

			local ret = mw.visualdata.query( 'Book', '[[title::+]]', {'title'}, {} )

			return mw.text.jsonEncode(ret)
			end

			return p
			</pre>


	Template: [[Template:Test Lua]]		Template: [[Template:Test Lua]]

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	{{Template:Test_Lua}}		{{Template:Test_Lua}}


			===2) perform the query on a wiki article and then process the result using Lua===



			<pre>

			local p = {}

			function p.main(frame)
			-- local args = frame:getParent().args
			local origArgs = (type(frame.getParent) == "function") and frame:getParent().args or frame
			local success, json = pcall(mw.text.jsonDecode, origArgs[0])

			-- do more processing here
			local ret = json

			return mw.text.jsonEncode(ret)
			end


			return p

			</pre>

2025-06-14T00:28:40Z

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