tewtutin_26.ts

// ...
@Post('remittance-with-transaction-and-fee')  
@ApiResponse({  
  type: RemittanceResultDto,  
})  
async makeRemittanceWithTransactionAndFee(@Body() remittanceDto: RemittanceDto) {  
  return this.connection.transaction(async manager => {  
    const transactionAppService = this.appService.withTransaction(manager); // <-- this is interesting new thing  
    const result = await transactionAppService.makeRemittance(remittanceDto.userIdFrom, remittanceDto.userIdTo, remittanceDto.sum, remittanceDto.withError);  
    result.fromBalance -= 1; // <-- transfer fee  
    const senderPurse = await transactionAppService.getPurse(remittanceDto.userIdFrom);  
    senderPurse.balance -= 1; // <-- transfer fee, for example of using several services in one transaction in controller  
    await this.appServiceV2.withTransaction(manager).savePurse(senderPurse);  
    return result;  
  });  
}
// ...