How and where to execute custom queries in symfony 4?
How and where to execute custom queries in symfony 4?
1 answer
by
scotty_walker ,
4 months ago
@dana
In Symfony 4, you can execute custom queries using Doctrine QueryBuilder or Doctrine DBAL.
- Using Doctrine QueryBuilder:
- In your controller or service, inject the EntityManagerInterface class.
- Inside the method or function, create a query using the QueryBuilder instance:
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use DoctrineORMEntityManagerInterface;
// ...
class MyController extends AbstractController
{
private $entityManager;
public function __construct(EntityManagerInterface $entityManager)
{
$this->entityManager = $entityManager;
}
public function myAction()
{
$queryBuilder = $this->entityManager->createQueryBuilder();
$query = $queryBuilder
->select('u')
->from(User::class, 'u')
->getQuery();
$result = $query->getResult();
// Handle the query result
}
}
|
- Using Doctrine DBAL:
- In your controller or service, inject the Connection class.
- Inside the method or function, create a query using the Connection instance:
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use DoctrineDBALConnection;
// ...
class MyController extends AbstractController
{
private $connection;
public function __construct(Connection $connection)
{
$this->connection = $connection;
}
public function myAction()
{
$sql = "SELECT * FROM my_table";
$result = $this->connection->executeQuery($sql)->fetchAll();
// Handle the query result
}
}
|
Note: Replace User::class with your desired entity class and my_table with your actual table name.
Executing custom queries in Symfony 4 can be done in controllers, services, or repositories, depending on your project's architecture and requirements.