Data store doesn't work

Help and Feedback Scripting Support
#1

I used this script to save player’s tools. but it didn’t work this is the script:

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("Stats")

game.Players.PlayerAdded:Connect(function(plr)
        local tool = DataStore:GetAsync("User-"..plr.UserId)
        if tool then
            for i,v in pairs(tool) do
                local ToolFound = game.ReplicatedStorage.BuyToolItems:FindFirstChild(v)
                if ToolFound then
                    ToolFound:Clone().Parent = plr.Backpack
                    ToolFound:Clone().Parent = plr.StarterGear
                end
            end
        end
    end)

game.Players.PlayerRemoving:Connect(function(Player)
    DataStore:SetAsync(Player.UserId, Player.Backpack)
end)

There also popped up an error
in the output: 104: Cannot store Instance in data store. Data stores can only accept valid UTF-8 characters
how do I fix this?

2 Likes
#2

That means you are trying to store an Instance (the backpack of the player), but you can only store values (strings, numbers)

So you could try to store a table containing the tools of a player:

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("Stats")

game.Players.PlayerAdded:Connect(function(plr)
	
	local success, data, err = pcall(function()
		return DataStore:GetAsync("User-"..plr.UserId)
	end)
	
	if success then
		for _, tool in pairs(data) do
			local ToolFound = game.ReplicatedStorage.BuyToolItems:FindFirstChild(tool)
			if ToolFound then
				ToolFound:Clone().Parent = plr.Backpack
				ToolFound:Clone().Parent = plr.StarterGear
			end
		end
	else
		error("Datastore error: "..err)
	end
end)

game.Players.PlayerRemoving:Connect(function(Player)
	local plrBackpack = {}
	
	for _, tool in pairs(Player.Backpack:GetChildren()) do
		table.insert(plrBackpack, tool.Name)
	end
	
	local success, err = pcall(function()
		DataStore:SetAsync(Player.UserId, plrBackpack)
	end)
	
	if not success then 
		error("Datastore error: "..err)
	end
end)

This should work, lmk if there’s any problem

#3

Doesn’t work. This is what the output says:
ServerScriptService.ToolSaveScript:11: invalid argument #1 to ‘pairs’ (table expected, got nil)

1 Like
#4

I think it’s because the data is not set yet, so you could try this to check if data is a table:

	if success then
		if type(data) == "table" then
			for _, tool in pairs(data) do
				local ToolFound = game.ReplicatedStorage.BuyToolItems:FindFirstChild(tool)
				if ToolFound then
					ToolFound:Clone().Parent = plr.Backpack
					ToolFound:Clone().Parent = plr.StarterGear
				end
			end
		end
	else
		error("Datastore error: "..err)
	end
#5

how it would look in the whole script?

#6

Like this

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("Stats")

game.Players.PlayerAdded:Connect(function(plr)
	
	local success, data, err = pcall(function()
		return DataStore:GetAsync("User-"..plr.UserId)
	end)
	
	if success then
		if type(data) == "table" then
			for _, tool in pairs(data) do
				local ToolFound = game.ReplicatedStorage.BuyToolItems:FindFirstChild(tool)
				if ToolFound then
					ToolFound:Clone().Parent = plr.Backpack
					ToolFound:Clone().Parent = plr.StarterGear
				end
			end
		end
	else
		error("Datastore error: "..err)
	end
end)

game.Players.PlayerRemoving:Connect(function(Player)
	local plrBackpack = {}
	
	for _, tool in pairs(Player.Backpack:GetChildren()) do
		table.insert(plrBackpack, tool.Name)
	end
	
	local success, err = pcall(function()
		DataStore:SetAsync(Player.UserId, plrBackpack)
	end)
	
	if not success then 
		error("Datastore error: "..err)
	end
end)
How to keep button visible with data store?
DataStores for Inventory
#7

You can’t save instances like “Player.Backpack” inside a DataStore.