Why Symfony2 dont catch exceptions - php

i have a repository
class TurnoRepository extends EntityRepository
{
public function findTurnoActivo()
{
$q = $this
->createQueryBuilder('t')
->where('t.activo = :activo')
->setParameter('activo', true)
->getQuery();
return $q->getSingleResult();
}
}
this method throw a NoResultException but if i try to catch in my controller
private function obtenerTurno()
{
$em = $this->getDoctrine()->getEntityManager();
$turno = null;
try {
$turnoActivo = $em->getRepository('MyBundle:Turno')->findTurnoActivo();
} catch (NoResultException $e) {
return false;
}
return $turno;
}
always i get 500 Internal Server Error on my page

Symfony2 code is namespaced so you have to add the correct namespace for the class NoResultException, try using:
catch (\Doctrine\ORM\NoResultException $e)
Note the backslash in front of the Doctrine namespace or import the NoResultException class by using use.

You can use $q->getOneOrNullResult(); if you don't want to catch NoResultException in the controller.

Related

Call to undefined method App\Helpers Laravel

I want to call function payrollProcess from another class inside my controller.
here's my code :
public function save(Request $request, $obj = null)
{
PayrollHelper::payrollProcess($PayrollPeriod);
return view('payroll_process.form');
}
and this is payrollHelper class code :
<?php
namespace App\Helpers;
use App\Helpers\Exceptions\ValidationException;
use App\Models\Config;
use App\Models\Driver;
use App\Models\DriverPayable;
use App\Models\PayrollPeriod;
use Carbon\Carbon;
use Exception;
use Illuminate\Support\Facades\Log;
final class PayrollHelper {
public static function processPayroll(PayrollPeriod $payrollPeriod)
{
try {
$drivers = Driver::where('active', true)->get();
foreach ($drivers as $driver) {
$payable = $payrollPeriod->driverPayables()
->where('driver_id', $driver->id)->first();
if (!$payable) {
$payable = new DriverPayable;
}
$payable->payrollPeriod()->associate($payrollPeriod);
$payable->driver()->associate($driver);
if (!$payable->save()) {
\Log::info($payable->errors());
throw new ValidationException($payable->errors());
}
}
} catch (Exception $e) {
Log::error($e);
SessionHelper::setMessage(
'Unable to process payroll, Please contact system Administrator'
);
} catch (ValidationException $e) {
Log::info($e->errors);
SessionHelper::setMessage($e->errors);
}
}
}
?>
I got this error when i run it. Call to undefined method App\Helpers\PayrollHelper::payrollProcess()
any idea ?
In PayrollHelper class you have defined processPayroll method so in your controller
public function save(Request $request, $obj = null)
{
PayrollHelper::payrollProcess($PayrollPeriod);
return view('payroll_process.form');
}
you are accessing undefined method

Doctrine returns different responses array/object

I have two Doctrine queries like so:
FetchBookRepository:
public function fetchBook($id)
{
try {
$book = $this->em->getRepository('BooksApiBookBundle:BooksEntity')
->find($id);
var_dump($book);die();
} catch (\Exception $ex) {
$this->em->close();
throw new QueryException('003', 502);
}
return $book;
}
FetchAllBooksRepository:
public function allBooks()
{
try {
$book = $this->em->getRepository('BooksApiBookBundle:BooksEntity')
->findAll();
var_dump($book);die();
} catch (\Exception $ex) {
$this->em->close();
throw new QueryException('003', 502);
}
return $book;
}
They both work as expected, but when i closely investigate the data returned I noticed that FetchBookRepository returns Object and FetchAllBooksRepository returns array of Objects.
Why is this happening what does the return depend on and is there a way to standardise the return...?

How to catch ReflectionException in Laravel 5?

$module - is one of my classes, based on Interface and must be have public function getController. I can forget to add getController function in class, and after run i have this error:
ReflectionException in Container.php line 776:
Class App\Http\Controllers\ does not exist
and want to catch this exception, but this code not work:
try
{
\Route::get($module->getUrl(), $module->getController() . '#index');
}
catch (\ReflectionException $e)
{
echo 123123;
}
Code example:
namespace App\MyModules;
MyModuleManager::bindRoute();
interface MyModuleInterface
{
public function getUrl();
public function getController();
}
class MyClass implements MyModuleInterface
{
public function getUrl()
{
return '/url';
}
/*
* for example: this method i forgdet to add
* and in ModuleManager::bindRoute i want to cath exception
*
public function getController()
{
}
*/
}
class MyModuleManager
{
static public function bindRoute()
{
$module = new MyClass();
try
{
\Route::get($module->getUrl(), $module->getController() . '#index');
}
catch (\ReflectionException $e)
{
echo 123123;
}
}
}
In L5 you can handle this exception globally:
// Exceptions/Handler.php
use ReflectionException;
public function render($request, \Exception $e)
{
if ($e instanceof ReflectionException) {
// …
}
return parent::render($request, $e);
}

PHP: add a custom method to a(n internal) class (derived from exception class) at runtime

I extended the exception class amongst other things to add a method getMessageHTML().
In my application I want to catch any exception - also exceptions of derived internal classes like e.g. the ReflectionException - and want to be able to use a getMessageHTML() method or other custom methods on any exception and any derived exception.
Is there any way, to add a method or trait to an internal class like the exception class or the ReflectionException class at runtime?
The only solution that comes to my mind is to wrap any catched exception into my extended exception class like:
$anyException = new Exception(); //or ReflectionException, or ...
$wrappedException = MyException::wrap($anyException);
$wrappedException->getMessageHTML(); //or any other custom method
is there any implementation, that allows to introduce a method to every derived internal or foreign class/object, so that any object knows it?
$anyException = new Exception(); //or ReflectionException, or ...
$anyException->getMessageHTML();
then i could simply do:
try
{
throw <anyException>(); //like throw Exception() or throw ReflectionException() ...
}
catch($e)
{
$e->getMessageHTML(); //its assured that the method is known.
}
For now I am doing it like this:
class MyException extends Exception
{
protected static function cast($destination, $sourceObject)
{
if(is_string($destination))
$destination = new $destination();
$sourceReflection = new \ReflectionObject($sourceObject);
$destinationReflection = new \ReflectionObject($destination);
$sourceProperties = $sourceReflection->getProperties();
foreach($sourceProperties as $sourceProperty)
{
$sourceProperty->setAccessible(true);
$name = $sourceProperty->getName();
$value = $sourceProperty->getValue($sourceObject);
if ($destinationReflection->hasProperty($name))
{
$propDest = $destinationReflection->getProperty($name);
$propDest->setAccessible(true);
$propDest->setValue($destination,$value);
}
else
$destination->$name = $value;
}
return $destination;
}
public static function wrap(Exception $exception)
{
$wrap = $exception;
if(!$exception instanceof MyException)
$wrap = self::cast(__CLASS__, $exception);
return $wrap;
}
public function getMessageHTML()
{
//some code ...
}
}
try
{
throw new ReflectionException('test');
}
catch(Exception $e)
{
$e = MyException::wrap($e);
echo $e->getMessageHTML();
}
or - simpler - and with the advantage to have the previous exception available:
class MyException extends Exception
{
public static function wrap(Exception $exception)
{
$wrap = $exception;
if(!$exception instanceof AppException)
{
try
{
throw new AppException($exception->getMessage(), $exception->getCode(), $exception);
}
catch(AppException $e)
{
$wrap = $e;
}
}
return $wrap;
}
public function getMessageHTML()
{
//some code ...
}
}

Exception handling in php

I have this scenario:
Interface ClassInterface
{
public function getContext();
}
Class A implements ClassInterface
{
public function getContext()
{
return 'CONTEXTA';
}
//Called in controller class
public function Amethod1()
{
try {
//assuming that Helper is a property of this class
$this->helper->helperMethod($this);
} catch(Exception $ex) {
throw $ex;
}
}
}
Class B implements ClassInterface
{
public function getContext()
{
return 'CONTEXTB';
}
//Called in controller class
public function Bmethod1()
{
try {
//assuming that Helper is a property of this class
$this->helper->helperMethod($this);
} catch(Exception $ex) {
throw $ex;
}
}
}
Class Helper {
public function helperMethod(ClassInterface $interface)
{
try {
$this->verifyContext($interface->getContext());
//dosomething
} catch(\Exception $ex) {
throw $ex;
}
}
private function verifyContext($context) {
if (condition1) {
throw new \UnexpectedValueException('Invalid context.');
}
return true;
}
}
I want my controller class which calls Amethod1 and Bmethod1 to know the type of exception(s) thrown in the process. Is it advisable to rethrow an exception just like it was presented?
Do you think the throw-catch-throw-catch-throw structure reasonable in this case?
Yes, totally reasonable. But: your specific example can be simplified from:
public function Amethod1()
{
try {
//assuming that Helper is a property of this class
$this->helper->helperMethod($this);
} catch(Exception $ex) {
throw $ex;
}
}
To:
public function Amethod1()
{
//assuming that Helper is a property of this class
$this->helper->helperMethod($this);
}

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