tewtutin_10.ts

async makeRemittanceWithTypeOrmV1(transactionEntityManager: EntityManager, fromId: number, toId: number, sum: number, withError = false) {  
  const fromUser = await transactionEntityManager.findOne(User, fromId);  // <-- we need to use only provided transactionEntityManager, for make all requests in transaction
  const toUser = await transactionEntityManager.findOne(User, toId);  // <-- and there
  if (fromUser === undefined) {  
    throw new Error(NOT_FOUND_USER_WITH_ID(fromId));  
  }  
  if (toUser === undefined) {  
    throw new Error(NOT_FOUND_USER_WITH_ID(toId));  
  }  
  if (fromUser.defaultPurseId === null) {  
    throw new Error(USER_DOES_NOT_HAVE_PURSE(fromId));  
  }  
  if (toUser.defaultPurseId === null) {  
    throw new Error(USER_DOES_NOT_HAVE_PURSE(toId));  
  }  
  const fromPurse = await transactionEntityManager.findOne(Purse, fromUser.defaultPurseId);  // <-- there
  const toPurse = await transactionEntityManager.findOne(Purse, toUser.defaultPurseId);  // <--there
  const modalSum = Math.abs(sum);  
  if (fromPurse.balance < modalSum) {  
    throw new Error(NOT_ENOUGH_MONEY(fromId));  
  }  
  fromPurse.balance -= sum;  
  toPurse.balance += sum;  
  await this.appServiceV2.savePurse(fromPurse);  // <-- oops, something was wrong
  if (withError) {  
    throw new Error('Unexpectable error was thrown while remittance');  
  }  
  await transactionEntityManager.save(toPurse);  
  const remittance = new RemittanceResultDto();  
  remittance.fromId = fromId;  
  remittance.toId = toId;  
  remittance.fromBalance = fromPurse.balance;  
  remittance.sum = sum;  
  return remittance;  
}