List object fields in Lua - lua

Question

I want to create a very simple object oriented program. How can I list object fields (e.g., all customer names)? What is wrong with the following code? for k, v in ipairs() didn't work.
do
local Account = {}
function Account:Current()
return self.B
end
function Account:Deposit(D)
self.B = self.B + D
end
function Account:Withdraw(W)
self.B = self.B - W
end
function BankAccount(Id, Name, N)
return {B=N,Current=Account.Current,Deposit=Account.Deposit,Withdraw=Account.Withdraw,AccountName=Name,AccountId=Id}
end
end
local Id = 1
local CustomerDatabase = {}
while true do
print("Select an option or press q to quit")
print("1. Create new customer entry")
print("5. List current customer database")
local Option = io.read("*line")
if Option == "q" then break
elseif Option == "1" then
print("Enter the name")
local Name = io.read("*line")
print("Enter initial amount")
local InitialAmount = io.read("*line")
BankAccount(Id, Name, InitialAmount)
table.insert(CustomerDatabase, BankAccount)
Id = Id + 1
elseif Option == "5" then
for k, v in ipairs(CustomerDatabase) do
print(k .. v.AccountName)
end
end
end

Answer 1

BankAccount(Id, Name, InitialAmount)
table.insert(CustomerDatabase, BankAccount)
Here, BankAccount is a function, you are inserting into the table a function. That's why v.AccountName is invalid, functions can't be indexed.
What you should do is to add the account object:
local account = BankAccount(Id, Name, InitialAmount)
table.insert(CustomerDatabase, account)