How to use DataStore2 - Data Store caching and data loss prevention

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#819

It works! Thank you everybody for your help. Have a nice day!

#820

Did you mean :Save() here?

just trying to clear any confusion

#821 
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Players = game:GetService("Players")
local ServerScriptService = game:GetService("ServerScriptService")
local DataStore2 = require(game.ServerScriptService.DataStore2)
DataStore2.Combine("DATA", "Stats", "Inventory")

local Stats = {
	Strength = 0;
	Rebirths = 0;
	Cash = 1000;
	Speed = 20
}

local Inventory = {
	Cat = false;
	BigGear = false
	}



local playersavetable = {};

local function loadStarterData(Player)
		local leaderstats = Instance.new("Folder")
		leaderstats.Name = "leaderstats"
		leaderstats.Parent = Player
		local Inv = Instance.new("Folder")
		Inv.Name = "Inventory"
		Inv.Parent = leaderstats
		for statname, statvalue in pairs(Stats) do
			if type(statvalue) == 'number' then
			local intvalue = Instance.new("IntValue")
			intvalue.Name = statname
			intvalue.Value = statvalue
			intvalue.Parent = leaderstats
			end
			for statname, statvalue in pairs(Inventory) do
			if type(statvalue) == 'boolean' then
			local intvalue = Instance.new("BoolValue")
			intvalue.Name = statname
			intvalue.Value = statvalue
			intvalue.Parent = Inv
			end
		end
	end
		end

local function loadData(player)
	local Data
	local s, e = pcall(function()
	Data = DataStore2:GetAsync('UserId'..player.UserId)
	end)
	
	if s then 
		print (player.Name.."Data loaded")
	else
		print(player.Name.."Data failed to load")
	end
	
	if Data then
		for statname, statvalue in pairs(Data) do
			if type(statvalue) == "number" then
			player.leaderstats[statname].Value = statvalue
			else if type(statvalue) == "boolean" then
			player.leaderstats.Inventory[statname].Value = statvalue
			end
			end
		end
		print(player.Name.."Data has been loaded")
	else
		print(player.Name.."No data found! generating..")
		end
	end

local function saveData(player, Stats)
	--if RunService:IsStudio() then return end
	local Data = {}
	for _, stat in ipairs(Stats:GetChildren()) do
   if not stat:IsA("Folder") then
       Data[stat.Name] = stat.Value
   end
end
	local s, e = pcall(function()
		DataStore2:SetAsync('UserId'..player.UserId, Data)
	end)
		if s then 
	print(player.Name.."Data has been saved")
		else
	warn (player.Name.."Data failed to save"..e)
	end
end

ReplicatedStorage.SaveEvent.OnServerEvent:Connect(function(player)
 saveData(player)	
end)

Players.PlayerAdded:Connect(function(player)
	playersavetable[player] = tick()
	loadStarterData(player)
	loadData(player)
end)

Players.PlayerRemoving:Connect(function(player)
	saveData(player)
end)

On attempt to save I get the error " [ServerScriptService.datastore:78: attempt to index local ‘Stats’ (a nil value"

#822

Yes, I did, my bad.

#823

You are not using DataStore2 right at all. GetAsync in DataStore2 is not like it in normal data stores–it returns a promise. It also never errors. Please read the examples in the documentation.

#824

Why’d you reply to my comment?

#825

Mobile forum UI got in my way, I think. Whoops. That was in reply to @Quoteory

2 Likes
#827

1 Question I’m a little bit confused on saving data on tables using DataStore2

Mind if u help me out?

The other u answered fixed my problem

Now I need to save items from the table

Help me on how to save tables in DataStore2

#828

You save them like any other value. ds2:Set({ })

#829

i cant understand on how to get the table

#830

You save and get them like any other value. There is nothing special about tables.

#831 
local DataStore2 = require(game.ServerStorage:WaitForChild("DataStore2"))
local DefaultRank = "Noob"
local DefaultCapacity = 15
local DefaultRankBoost = 1
DataStore2.Combine("Sticks", "Coins", "Kills", "X2Sticks", "Class", "ClassBoost", "Kill Streak", "Inventories","Capacity")

local Tables = {}

function plrAdded(player)
	local SticksStore = DataStore2("Sticks", player)
	local CoinsStore = DataStore2("Coins", player)
	local KillStore = DataStore2("Kills", player)
	local ClassStore = DataStore2("Class", player)
	local ClassBoostStore = DataStore2("ClassBoost", player)
	local X2Sticks = DataStore2("X2Sticks", player)
	local X2Coins = DataStore2("X2Coins", player)
	local KillCombos = DataStore2("Kill Streak", player)
	local CapacityStore = DataStore2("Capacity", player)
local InvSaves = DataStore2("Capacity", player)
	
	local folder = Instance.new("Folder")
	folder.Name = "leaderstats"
	folder.Parent = player
	

-- In Saving
local folderofplr = Instance.new("Folder")
folderofplr.Name = player.Name
folderofplr.Parent = game.ServerStorage

InvSaves:Get(function()
for i, items in pairs(game.ServerStorage[player.Name]:GetChildren) do
table.insert(Tables, items)
end
end)

InvSaves:Set(Tables)
	-- Get the stats
	
	local Sticks = Instance.new("NumberValue")
	Sticks.Parent = folder
	Sticks.Name = "Sticks"
	Sticks.Value = SticksStore:Get(0)
	
	SticksStore:OnUpdate(function(value)
		Sticks.Value = value
	end)
	
	local Coins = Instance.new("NumberValue")
	Coins.Name = "Coins"
	Coins.Parent = player
	Coins.Value = CoinsStore:Get(0)
	
	CoinsStore:OnUpdate(function(value)
		Coins.Value = value
	end)
	
	
	local Kills = Instance.new("NumberValue")
	Kills.Parent = player
	Kills.Name = "Deaths"
	Kills.Value = KillStore:Get(0)
	
	KillStore:OnUpdate(function(value)
		Kills.Value = value
	end)
	
	local KillStreaks = Instance.new("NumberValue")
	KillStreaks.Name = "Kill Streaks"
	KillStreaks.Parent = folder
	KillStreaks.Value = KillCombos:Get(0)
	
	KillCombos:OnUpdate(function(value)
		KillStreaks.Value = value
	end)
	
	local Rank = Instance.new("StringValue")
	Rank.Name = "Class"
	Rank.Parent = folder
	Rank.Value = ClassStore:Get(DefaultRank)
	
	ClassStore:OnUpdate(function(value)
		Rank.Value = value
	end)
	
	local RankBoost = Instance.new("NumberValue")
	RankBoost.Name = "ClassBoost"
	RankBoost.Parent = Rank
	RankBoost.Value = ClassBoostStore:Get(DefaultRankBoost)
	
	ClassBoostStore:OnUpdate(function(value)
		Rank.Value = value
	end)
	
	local Caps = Instance.new("NumberValue")
	Caps.Name = "MaxCapacity"
	Caps.Parent = Sticks
	Caps.Value = CapacityStore:Get(DefaultCapacity)
	
	CapacityStore:OnUpdate(function(value)
		Caps.Value = value
	end)
end

for _, player in pairs(game.Players:GetPlayers()) do
	plrAdded(player)
end

game.Players.PlayerAdded:Connect(plrAdded)

you meant this

if u are wondering why my code format is broken im using the forums code sorry i cant use studio yet

#832

I’m having trouble saving a value in datastor2, I’ve worked with it a few times, but I don’t know what I’m doing wrong here are some scripts that I use the sited value (StageSave_v3)

Sctipt of DevProduct:

local DataStore = require(1936396537)

DataStore.Combine("SkipsSave_V3")

local MarketplaceService = game:GetService("MarketplaceService")

function getPlayerFromId(id)
for i,v in pairs(game.Players:GetChildren()) do
	if v.userId == id then
		return v
	end
end
return nil
end

MarketplaceService.ProcessReceipt = function(receiptInfo)
local productId = receiptInfo.ProductId
local playerId = receiptInfo.PlayerId
local player = getPlayerFromId(playerId)
local productName 

local SkipsSave  = DataStore("SkipsSave_V3", player)

if productId == 955834342 then
SkipsSave:Increment(1,0)
end

if productId == 955834530 then
SkipsSave:Increment(5,0)
end

if productId == 955835662 then
SkipsSave:Increment(10,0)
end

return Enum.ProductPurchaseDecision.PurchaseGranted		
end

Script of TextLabel in StarterGui (Script):

local DataStore = require(1936396537)

local StageText = script.Parent

local player = script.Parent.Parent.Parent.Parent.Parent.Parent

DataStore.Combine("SkipsSave_V3")

local SkipsSave = DataStore("SkipsSave_V3", player)

local function UpdateSkips(Value)

StageText.Text = "Skips: "..Value

end

UpdateSkips(SkipsSave:Get(0))

SkipsSave:OnUpdate(UpdateSkips)

Script To Do “Skip Stage”:

local DataStore = require(1936396537)

local player = script.Parent.Parent.Parent.Parent.Parent.Parent
local Bases =  workspace:WaitForChild("Bases")

DataStore.Combine("SkipsSave_V3","StageSave_V3")

local SkipsSave  = DataStore("SkipsSave_V3", player)
local StageSave  = DataStore("StageSave_V3", player)

for i,v in pairs(Bases:GetChildren()) do
NumberOfStages = i
end

local Debaunce = false
script.Parent.MouseButton1Click:Connect(function()
if Debaunce == false then
Debaunce = true
if SkipsSave:Get(0) > 0 then 
if StageSave:Get(1)<= NumberOfStages then
	SkipsSave:Increment(-1,0)
	StageSave:Increment(1,1)
end
else
	local ItemID = 955834342
	game:GetService("MarketplaceService"):PromptProductPurchase(player,ItemID)
end
wait(1)
Debaunce = false
end
end)

the datastore2 mentioned are working correctly, only the one (SaveStage_V3) that is not saving correctly, when I’m in the game it adds the value correctly (Updates the text) but when I leave and enter the game again it simply resets the value

sorry if this is difficult to understand, is that I really can’t explain it very well …

#833
  1. You are not using Combine right. You are just listing the keys you use, but are not providing a master key. Please read the documentation.
  2. The DataStore2 model is deprecated. Please use the GitHub release.
#834

umm @Kampfkarren how do u save items in table

does this how it works

1.do a for loop in the Get() function
2.the loop check every item in the folder
3.inserts the items in the table inside the loop
4. simply set the table

#835

I cannot insert the github file
I tried dragging it in studio but the cursor changes to :x: icon
I have also tried opening it as a file

Edit: nvm it worked by changing the extension of the file to .rbxl

#837

do you save tables in datastore2 like saving it from datastores?

#838

This was already stated, yes you can

#839

Is it stated that string values can be saved like normal values but i would like to put the items name in to the value

1 Like
#840

I got some questions. I’m pretty insecure in some points.

  1. Do you have to use :Increment() when updating Coins? I normally just do something like Coins.Value = Coins.Value + Increment(When using this method Coins don’t seem to be saved, when not using any other function)
  2. When do I have to use :Save(), .SaveAll()? It seems like data is also saving when not using this function (When e.g. using :Increment())
  3. :Set() sets you stat to a specific amount, :Increment() adds a specific amount, right?
  4. When is it recommended to make a backup and how to use it?
  5. I made a simple leaderstat script that adds 50 Coins every time the player joins.
local SStorage = game:GetService("ServerStorage")

local Modules = SStorage:WaitForChild("Modules")
local DataStore2 = require(Modules.DataStore2)

local StarterCoins = 0

DataStore2.Combine("Data","Coins","Speed")

local function LoadLeaderstats(Player)
	local CoinsData = DataStore2("Coins",Player)
	local SpeedData = DataStore2("Speed",Player)
	
	local Leaderstats = Instance.new("Folder")
	Leaderstats.Name = "leaderstats"
	Leaderstats.Parent = Player
	 
	local Speed = Instance.new("NumberValue")
	Speed.Name = "Speed" 
	Speed.Parent = Leaderstats
	
	local Coins = Instance.new("IntValue")
	Coins.Name = "Coins"
	Coins.Parent = Leaderstats

	local function UpdateCoins(UpdatedValue)
		Coins.Value = CoinsData:Get(UpdatedValue)
	end
	
	local function UpdateSpeed(UpdatedValue)
		Speed.Value = CoinsData:Get(UpdatedValue)
	end
	
	UpdateCoins(StarterCoins)
	UpdateSpeed(0)
	
	CoinsData:OnUpdate(UpdateCoins)
	SpeedData:OnUpdate(UpdateSpeed)
	
	CoinsData:Increment(50)
end

game.Players.PlayerAdded:Connect(LoadLeaderstats)

Am I using DataStore2 correctly? Can I somehow put UpdateCoins() and UpdateSpeed() in one function or do I have to write such a function for every single stat?

  1. How to save tables, strings etc.

Any help is appreciated :smiley:

1 Like