Can events handle tables?

FiveM Resource Development & Modding Discussion
1

I’m trying to make some code that would allow to call functions from server to client and vice versa more easily. But in order for it to work, there have to be tables passed through events. I get errors when trying to send an event from server to the client. Can events even handle tables?

Code looks like this:

CallClientFunction('somefunctionname', argument1, argument2, argument3)

function CallClientFunction(fname, ...)
	print('fname='..fname)
	for i,v in ipairs{...} do
		print('argument['..i..']='..v)
	end
	
	TriggerClientEvent('callClientFunction', 0, fname, ...)
end


RegisterNetEvent('callClientFunction')
AddEventHandler('callClientFunction', function(fname, ...)
	local table2={...}
	print('fname2='..fname)
	for i,v in ipairs(table2) do
		print('argumentas2['..i..']='..v)
	end
end)

Error:

InvokeNative: execution failed: Argument at index 1 was null.
Error running call reference function for resource grpltu: Execution of native 000000002f7a49e6 in script host failed.
stack traceback:
[C]: in upvalue ‘_in’
citizen:/scripting/lua/natives_server.lua:238: in function ‘TriggerClientEventInternal’
(…tail calls…)

2

Have you tried packing the data into a table when sending it to the client?

E.g.

function CallClientFunction(fname, ...)
	print('fname='..fname)
	for i,v in ipairs{...} do
		print('argument['..i..']='..v)
	end
	
	TriggerClientEvent('callClientFunction', 0, fname, {...}) -- or table.pack(...)
end

Then you can just treat the passed variable as a table from the start:

RegisterNetEvent('callClientFunction')
AddEventHandler('callClientFunction', function(fname, table)
	print('fname2='..fname)
	for i,v in ipairs(table) do
		print('argumentas2['..i..']='..v)
	end
end)

Edit: Or you could pass the arg variable that is available when using a variable number of arguments (see this).

3

I tried what you have suggested:

{...}
table.pack(...)
arg

Every suggestion gives the same error as mentioned before. I tried creating a table right from the beginning:
local table2={...}
and then using it in
TriggerClientEvent
to pass the table to the handler.

I have already looked in
https://www.lua.org/pil/5.2.html
I searched through lots of search results. Stackoverflow and etc. Did not find anything that solved the problem.