How can I make it so that my script saves my inventory after it's destroyed?

Help and Feedback Scripting Support
#1

I bearly ever use datastores, and want my inventory UI to save all the objects placed in a folder in my playergui.
It always fails afterwards.
the script I’m using:

--// Services
local Players = game:GetService("Players")
local DSS = game:GetService("DataStoreService")

--// Variables
local DS = DSS:GetOrderedDataStore("Items2")

--// Function

local function OnPlayerAdded(player)
	local plr_key = "id_"..player.UserId
	local success, data = pcall(function()
		return DS:GetAsync(plr_key)
	end)
	local DataFiles = {}
	
	if success then
		DataFiles = data or {}
	end
	for i, obj in pairs(DataFiles) do
		obj.Parent = player.PlayerGui.Inventory
	end
end

local function OnPlayerRemoving(player)
	local plr_key = "id_"..player.UserId
	local success, result = pcall(function()
		return DS:SetAsync(plr_key, player.PlayerGui.Inventory:GetChildren())
	end)
	if not success then
		warn(result)
	end
end

local function OnServerShutdown()
	for _, player in Players:GetPlayers() do
		local plr_key = "id_"..player.UserId
		local success, result = pcall(function()
			return DS:SetAsync(plr_key, player.PlayerGui.Inventory:GetChildren())
		end)
		if not success then
			warn(result)
		end
	end
end

--// Connections
Players.PlayerAdded:Connect(OnPlayerAdded)
Players.PlayerRemoving:Connect(OnPlayerRemoving)
game:BindToClose(OnServerShutdown)
#2

To save information that is destroyed via Instance:Destroy() visit the Documentation.
Here’s an example:

local InventoryFolder = ...
InventoryFolder.Destroying:Connect(function()
-- do stuff
end)
#3

Sorry for being late, but, I ended up reworking most of the system and figuring it out myself, thanks anyway ;-;

--// Services
local Players = game:GetService("Players")
local DSS = game:GetService("DataStoreService")

--// Variables
local DS = DSS:GetDataStore("Items6")

--// Function
local function OnPlayerAdded(player)
	player.PlayerGui:WaitForChild("Inventory").Parent = player
	local plr_key = "id_"..player.UserId
	local success, data = pcall(function()
		return DS:GetAsync(plr_key)
	end)
	local DataFiles = {}
	
	if success then
		DataFiles = data or game.HttpService:JSONEncode({})
	end
	for i, obj in pairs(game.HttpService:JSONDecode(DataFiles)) do
		if game.ServerStorage.Drops:FindFirstChild(obj) then
			game.ServerStorage.Drops:FindFirstChild(obj):Clone().Parent = player.Inventory
		else
			warn("couldnt find" .. obj)
		end
	end
end

local function OnPlayerRemoving(player)
	local plr_key = "id_"..player.UserId
	local success, result = pcall(function()
		local TBL = {}
		for i, obj in pairs(player.Inventory:GetChildren()) do
			table.insert(TBL, obj.Name)
		end
		TBL = TBL
		return DS:SetAsync(plr_key, game.HttpService:JSONEncode(TBL))
	end)
	if not success then
		warn(result)
	end
end

local function OnServerShutdown()
	for _, player in Players:GetPlayers() do
		local plr_key = "id_"..player.UserId
		local success, result = pcall(function()
			local TBL = {}
			for i, obj in pairs(player.Inventory:GetChildren()) do
				table.insert(TBL, obj.Name)
			end
			TBL = TBL
			return DS:SetAsync(plr_key, game.HttpService:JSONEncode(TBL))
		end)
		if not success then
			warn(result)
		end
	end
end

--// Connections
Players.PlayerAdded:Connect(OnPlayerAdded)
Players.PlayerRemoving:Connect(OnPlayerRemoving)
game:BindToClose(OnServerShutdown)