This DataStore script does not work

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1

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My goal
I am trying to make a DataStore that can save items from the Inventory then when joining place them back into the inventory

My Issue
Whenever I try to get the table from the DataStore using Inv:GetAsync(key..plr.UserId) it ends up just returning as nil and not actually grabbing the values. I can tell it saves, due to the final print in the function that runs when a player is removed.

What I have tried so far
I have tried to use the GetAsync as a Variable of local GetSave = Inv:GetAsync which didn’t end up working. I have also printed all around the script to check if things are working properly, as well as Setting Async in a different way but this one seems to not output any errors.

When I tried saving with Inv:GetAsync(key..plr.UserId, tools) it’d output with the error of “Cannot store Array in data store. Data stores can only accept valid UTF-8 characters.”

The Code

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local Inv = D_S:GetDataStore("Inventory")
local PlayerStorage = ReplicatedStorage:WaitForChild("PlayerStorage")

local key = "Demo_"

game:GetService("Players").PlayerAdded:connect(function(plr)
	
    local plrFolder = Instance.new("Folder")
    plrFolder.Name = plr.UserId
    plrFolder.Parent = PlayerStorage
    
    local inv = Instance.new("Folder")
    inv.Name = "Inventory"
    inv.Parent = plrFolder
	
	local toolFolder = game.ReplicatedStorage:WaitForChild("Weapons")
	
	local tools = Inv:GetAsync(key..plr.UserId)
	
	-- print(game:GetService("HttpService"):JSONEncode(tools))
	
	-- print(tools[1].." "..tools[2])
	
    if tools ~= nil then
		
        for i, v in pairs(tools) do
			
			print(tools[1])
			print(v)
			
            local tool = toolFolder:FindFirstChild(v):Clone()
			
            tool.Parent = inv
			
        end
		
	else
		
		tools = {"TempTool"}
		
		for i, v in pairs(tools) do
			
			print(v)
			print(tools[i])
			
			local tool = toolFolder:FindFirstChild(v):Clone()
			
			tool.Parent = inv
			
		end
		
    end
	
end)

game:GetService("Players").PlayerRemoving:connect(function(plr)
	
    local plrFolder = PlayerStorage:WaitForChild(plr.UserId)
    local inv = plrFolder:WaitForChild("Inventory")
    
    local tools = {}
	
    for i, v in pairs(inv:GetChildren()) do
	
        table.insert(tools, v.Name)
		
    end
    
	print(game:GetService("HttpService"):JSONEncode(tools))
	
    Inv:SetAsync(key..plr.UserId, game:GetService("HttpService"):JSONEncode(tools))
	
end)

Anything else

I’d like to know why it hasn’t been working and the way I can fix it, please and thank you.

2

Do not encode the table on save. Roblox will handle the table encoding on save and decode it for you on load. Just pass the table directly to SetAsync.

3

Oh that was the other saving I tried, and it said Cannot store Array in data store. Data stores can only accept valid UTF-8 characters.

1 Like
4

There is a few things wrong with this picture, the first one key,plr.UserId
and the second one being you try to grab this table twice.

5

Oh whoops I guess I left that Variable in whenever I tried something else hahah

6

Lmao, it’s all good, just thought I’d point that out.

1 Like
7

You know how I could fix it now?

8

The only real issue I can see, is that you’re Encoding the table, and then sending it to be encoded again by the actual datastore, where as you’re only doing one layer of decoding.

1 Like
9

Idk if it is Encoding if it’s saying that error and it has to be a string or something.

10

Give me one second, I’ll open studio really quick.

1 Like
11

Ok thank you for your assistance :smile:

12 
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Inv = game:GetService("DataStoreService"):GetDataStore("Inventory")
local PlayerStorage = ReplicatedStorage:WaitForChild("PlayerStorage")

local key = "Demo_"

game:GetService("Players").PlayerAdded:connect(function(plr)
	
    local plrFolder = Instance.new("Folder")
    plrFolder.Name = plr.UserId
    plrFolder.Parent = PlayerStorage
    
    local inv = Instance.new("Folder")
    inv.Name = "Inventory"
    inv.Parent = plrFolder
	
	local toolFolder = game.ReplicatedStorage:WaitForChild("Weapons")
	
	local success, tools = pcall(function() return Inv:GetAsync(key..plr.UserId) end)
	
	-- print(game:GetService("HttpService"):JSONEncode(tools))
	
	-- print(tools[1].." "..tools[2])
	
	if not success then
		warn("Couldn't load save")
	end
	
    if success and tools ~= nil then
		print("found")
		
		tools = game:GetService("HttpService"):JSONDecode(tools)
		
        for i, v in pairs(tools) do
				
            local tool = toolFolder:FindFirstChild(v)
			
			if tool then
            	tool:Clone().Parent = inv
			end
        end
		
	else
		
		tools = {"TempTool"}
		
		for i, v in pairs(tools) do
			
			local tool = toolFolder:FindFirstChild(v):Clone()
			
			tool.Parent = inv
			
		end
		
    end
	
end)

game:GetService("Players").PlayerRemoving:connect(function(plr)
	
    local plrFolder = PlayerStorage:WaitForChild(plr.UserId)
    local inv = plrFolder:WaitForChild("Inventory")
    
    local tools = {}
	
    for i, v in pairs(inv:GetChildren()) do
	
        table.insert(tools, v.Name)
		
    end
    
	
    Inv:SetAsync(key..plr.UserId, game:GetService("HttpService"):JSONEncode(tools))
	
end)

I ended up getting it to work like this.

1 Like
13

Alright, I am just going to look over it and alter my code to fit like that so I actually learn why. Thank you for your help I really appreciate it!

14

No problemo, good luck with development

1 Like