public ActionResult Transfer(TransferViewModel transfer)
{
// check for available funds
var sourceCheckingAccount = db.CheckingAccounts.Find(transfer.CheckingAccountId);
if (sourceCheckingAccount.Balance < transfer.Amount)
{
ModelState.AddModelError("Amount", "You have insufficient funds!");
}
// check for a valid destination account
var destinationCheckingAccount = db.CheckingAccounts.Where(c => c.AccountNumber == transfer.DestinationCheckingAccountNumber).FirstOrDefault();
if (destinationCheckingAccount == null)
{
ModelState.AddModelError("DestinationCheckingAccountNumber", "Invalid destination account number.");
}
// add debit/credit transactions and update account balances
if (ModelState.IsValid)
{
db.Transactions.Add(new Transaction { CheckingAccountId = transfer.CheckingAccountId, Amount = -transfer.Amount });
db.Transactions.Add(new Transaction { CheckingAccountId = destinationCheckingAccount.Id, Amount = transfer.Amount });
db.SaveChanges();
var service = new CheckingAccountService(db);
service.UpdateBalance(transfer.CheckingAccountId);
service.UpdateBalance(destinationCheckingAccount.Id);
return PartialView("_TransferSuccess", transfer);
}
return PartialView("_TransferForm");
}
public ActionResult Transfer(TransferViewModel transfer)
{
// verifica se existe saldo na sua conta
CheckingAccount sourceCheckingAccount = db.CheckingAccounts.Find(transfer.CheckingAccountId);
if (sourceCheckingAccount.Balance < transfer.Amount)
{
// se não houver saldo, erro ao adicionado ao estado do model
ModelState.AddModelError("Amount", "You have insufficient funds!");
}
// verificar se a conta destino existe
// FirstOrDefault() faz com que possa retornar null, evitando uma exeption caso não exista uma conta destino
CheckingAccount destinationCheckingAccount = db.CheckingAccounts.Where(c => c.AccountNumber == transfer.DestinationCheckingAccountNumber).FirstOrDefault();
if (destinationCheckingAccount == null)
{
// se não existe uma conta destino, adiciona erro a uma propriedade do modelo
ModelState.AddModelError("DestinationCheckingAccountNumber", "Invalid destination account number");
}
// se model for valido
// adicionando transações de debito e credito e atualizando saldo das duas contas
if(ModelState.IsValid)
{
//sua conta
db.Transactions.Add(new Transaction { CheckingAccountId = transfer.CheckingAccountId, Amount = -transfer.Amount });
// conta destino
db.Transactions.Add(new Transaction { CheckingAccountId = destinationCheckingAccount.Id, Amount = transfer.Amount });
db.SaveChanges();
// atualiza o saldo das duas contas
CheckingAccountService service = new CheckingAccountService(db);
service.UpdateBalance(sourceCheckingAccount.Id);
service.UpdateBalance(destinationCheckingAccount.Id);
// sucesso em tudo =)
return PartialView("_TransferSuccess", transfer);
}
// se ModelState não for valido
return PartialView("_TransferForm");
}
