How to make a search query for max and min in symfony 4?

by edmond_brakus , in category: PHP Frameworks , 5 months ago

How to make a search query for max and min in symfony 4?

Facebook Twitter LinkedIn Telegram Whatsapp

1 answer

Member

by larissa , 5 months ago

@edmond_brakus 

In Symfony 4, you can make search queries for maximum and minimum values using Doctrine Query Builder. Here's an example of how you can achieve it:

  1. Open the controller where you want to perform the search.
  2. Import the necessary classes at the top of the file:
1
2
use DoctrineORMEntityManagerInterface;
use DoctrineORMQueryBuilder;


  1. Inject the EntityManagerInterface into your controller method or constructor:
1
2
3
4
5
6
private $entityManager;

public function __construct(EntityManagerInterface $entityManager)
{
    $this->entityManager = $entityManager;
}


  1. Create a new method for performing the search:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
public function searchMinMax()
{
    $queryBuilder = $this->entityManager->createQueryBuilder();
    
    $query = $queryBuilder
        ->select('MAX(entity.field) as maximum, MIN(entity.field) as minimum')
        ->from(EntityName::class, 'entity')
        ->getQuery();

    $result = $query->getOneOrNullResult();

    // Access the maximum and minimum values
    $maximum = $result['maximum'];
    $minimum = $result['minimum'];
    
    // ...
}


Replace field with the name of the field you want to find the maximum and minimum values for, and EntityName with the actual name of your entity.


Now you can use the $maximum and $minimum variables in your controller logic as needed.


Remember to adjust the code to fit your specific use case.