Using UpdateAsync to save tables isn't working

[fxding_cam (sohcahtoa)]

So, I decided to use UpdateAsync to save and update data. But I am having a problem doing both, my script doesn’t save or update data.

I switched to UpdateAsync only because when I would use SetAsync would override other tables I had saved.

I tried searching how to properly save tables using UpdateAsync but I can’t seem to find any right ways, all the ones I saw don’t explain they just give the scripts out.

UpdateAsync Script

local success, errormessage = pcall(function()
		myDataStore:UpdateAsync(key,function(oldData)

			local newData = oldData or SavedItemIDs

			for i, item in pairs(ItemsFolder:GetChildren()) do --Items
				newData.x[item.Name] = item.Value
			end

			return newData

		end)
	end)

What x is being set to

if player:FindFirstChild("SlotUS") then --If the player has "SlotUS" in it, then the value of x will equal Outfit1
		x = "Outfit1"
	elseif player:FindFirstChild("SlotNVA") then --If the player has "SlotNVA" in it, then the value of x will equal Outfit2
		x = "Outfit2"
	elseif player:FindFirstChild("SlotALLIED") then --If the player has "SlotALLIED" in it, then the value of x will equal Outfit3
		x = "Outfit3"
	end

What SavedItemsIDs is

--NoDataUS, NoDataNVA, NoDataAL are preset outfits for players that have no data saved
local SavedItemIDs = {
	["Outfit1"] = {},
	["Outfit2"] = {},
	["Outfit3"] = {},
	["NoDataUS"] = {["M1C"] = "hat",["Pants"] = "http://www.roblox.com/asset/?id=5053577948",["Shirt"] = "http://www.roblox.com/asset/?id=5054465259",["Trecky1"] = "hair",["Web"] = "web",["face"] = "http://www.roblox.com/asset/?id=1942392454",["skin"] = "Pastel brown"},
	["NoDataNVA"] = {["M1"] = "hat",["Pants"] = "http://www.roblox.com/asset/?id=5053577948",["Shirt"] = "http://www.roblox.com/asset/?id=5054376077",["Trecky1"] = "hair",["Web"] = "web",["face"] = "http://www.roblox.com/asset/?id=343187883",["skin"] = "Nougat"},
	["NoDataAL"] = {["M1C"] = "hat",["Pants"] = "http://www.roblox.com/asset/?id=4831959204",["Shirt"] = "http://www.roblox.com/asset/?id=4831982288",["Trecky1"] = "hair",["Web1"] = "web",["face"] = "http://www.roblox.com/asset/?id=343187883",["skin"] = "Pastel brown"}
}

[fxding_cam (sohcahtoa)]

btw this is under player removing.

[Map1eMoose (MapleMoose)]

Idk if its your issue, but you could try using JSON Encode / Decode. It basically converts a table into a compressed string to be saved.

--saving
	local savestring = HTTPS:JSONEncode(DataTable)
	LogStore:SetAsync(player.UserId, savestring)

--loading
 local DS= DataStore:GetAsync(player.UserId)
 local DataTable
 if DS then
	 DataTable = HTTPS:JSONDecode(DS)
 else
	 --No data exists
 end

[fxding_cam (sohcahtoa)]

I’m trying to step away from using SetAsync. And I already tried that, no results.

[rogchamp (pasta)]

@fxding_cam

newData.x[item.Name]

You’re using the string “x” here, not the variable x. table.y will use the string, which is why bracket notation exists.

[rogchamp (pasta)]

That’s not true at all. GetAsync will never overwrite anything.

[rogchamp (pasta)]

You said GetAsync.

[dukzae]

@ForeverHD

When GetAsync() fails and returns a false/nil value, then you are correct, the error can be handled appropriately using either method. However, when GetAsync() fails and returns an old, undesired version of data, UpdateAsync can check for this with the incremental value . In most cases of saving data, the DataId will match the previous DataId. This means the two sets of data are consecutive , therefore can be saved without worry. However, as @1TheCutestDog mentioned:

@ForeverHD

Verifying data before writing it to the datastore . The data retrieved using GetAsync() is not always accurate or correct. For example, if GetAsync() fails then the players data may be set to false or nil . If this value is written to the datastore, the player’s data will be completely overwritten. GetAsync() can also retrieve incorrect previous data if a player hops between servers too quickly. To prevent this, we use UpdateAsync() .

I did say GetAsync. Your point is?

[rogchamp (pasta)]

That sounds like bad error/edge case handling, not the fault of GetAsync. GetAsync won’t just “return nil” when it fails, it will fail.

[x86_architecture (TritiumAndDeuterium)]

@dukzae

You should also try avoiding the use of GetAsync(). It is inaccurate at times and sometimes will overwrite the player data as nil or the default data for your datastore

This is not true. Get async does not set anything in a datastore. It simply returns something.

[dukzae]

Which is of course used to return the player’s data (in most cases.) UpdateAsync is the easier, and safer way to handle DataStore failures. Which is why I would avoid GetAsync()

[fxding_cam (sohcahtoa)]

I put it used brackets and I still got nothing - newData[x][item.Name]

[x86_architecture (TritiumAndDeuterium)]

@dukzae

Which is of course used to return the player’s data (in most cases.) UpdateAsync is the easier, and safer way to handle DataStore failures. Which is why I would avoid GetAsync()

Again. GetAsync() is ok for people to use. SetAsync() is not ok for people to use.

[dukzae]

It’s okay but not great.

@ForeverHD

However, when GetAsync() fails and returns an old, undesired version of data, UpdateAsync can check for this with the incremental value .

It’s probably not a risk worth taking. Atleast, to me it isn’t. This has gone way off topic. I’ll continue using UpdateAsync, and you can continue with whatever you like to use.

[fxding_cam (sohcahtoa)]

I solved this problem by adding a :BindToClose() function. Reason why I didn’t add it in the first place was because when I was using :SetAsync(), PlayerRemoving ran all the time and I had no issues of data not saving, loading, and etc.