Lua self.<fieldName> not working as expected (1 Viewer)

[keys9]

Hello, I am new to Roblox coding and have a question about why I am getting the following error when I run the test server:

 isReady is not a valid member of Player "Players.Player1"

I omitted what I believe to be irrelevant parts of the code. Basically when BoardQueue:addPlayer is called I get the above error. I expect it to print the value of isReady in the instance of my BoardQueue class but instead I get that error. I am very confused because I am using self in a : function with the name of the class I Want self to refere to in front of the : . Forgive me if this is a newbie question as I am new to Lua.

local BoardQueues = {}
local playersInQueue = {}


local JoinBoardQueue = rStore:WaitForChild("JoinBoardQueueNow")

local function enqueuePlayer(player, board)
   
    if(playersInQueue[player]) then
        print("Player is already in queue")
        return
    end
    local queue = getQueueForBoard(board)
    if(queue == nil) then
        --if no queue was found, make one, player will be added to queue by constructor
        local newQueue = BoardQueue:new(nil, boardName, player)
        table.insert(BoardQueues, newQueue)
        newQueue.addPlayer(player)
    else
        --otherwise insert them into existing queue
        queue.addPlayer(player)
    end
   
    addToQueue(player)
   
    return board
end

JoinBoardQueue.OnServerInvoke = enqueuePlayer

--Meta class
BoardQueue = {players, boardName, leader}

--Derived class method new
--BoardQueue holds all players in queue and keeps track of whether or not it is full
function BoardQueue:new(o, boardName, leader)
    o = o or {}
    setmetatable(o, self)
    self.__index = self
    local newTable = {}
    table.insert(newTable, leader)
    self.players = newTable --list of queued players including leader
    self.isReady = false --whether the queue is ready to start a game
    self.boardName = boardName --The name of the party board
    self.queueLeader = leader --The queue leader. Leader decides when to start if less than 4 players present in queue
    return o
end

function BoardQueue:addPlayer(player)
    print("Ready ", self.isReady)
end

 

[Herly Quijano]

Because you defined the function 'addPlayer(player)' with the colon, but you called with just the dot

newQueue.addPlayer(player) -- No
newQueue:addPlayer(player) -- Yes

If you don't know, what the colon does is adding an invisible parameter that is the table itself, basically:

function table:func(param)
-- Is equal to
function table.func(self, param) -- Where self is the same 'table'

So if you do:

function BoardQueue:addPlayer(player)
-- Is the same as:
function BoardQueue.addPlayer(self, player)
-- And then call it like this:
newQueue.addPlayer(player)
-- Lua interprets it like
newQueue.addPlayer(player, nil)
-- The param self is the player and the param player is nil.