Comment appeler des requêtes SQL directes et rejoindre la collection dans Magento2

Je veux juste appeler une requête SQL directe dans Magento2 comme dans magento1.x

Lorsque vous bloquez ou modélisez des fichiers, vous devez initialiser la ressource, puis vous devez appeler la connexion

C'est

protected $_resource;

et

public function __construct(
    \Magento\Backend\Block\Template\Context $context,
    \Magento\Framework\App\Resource $resource,
    array $data = []
) {
    $this->_resource = $resource;
    parent::__construct($context, $data);
}

pour la connexion

protected function getConnection()
{
    if (!$this->connection) {
        $this->connection = $this->_resource->getConnection('core_write');
    }

    return $this->connection;
}

ci-dessous est un exemple dans le fichier de blocage

<?php
/**pradeep.kumarrcs67@gmail.com*/
namespace Sugarcode\Test\Block;

class Joinex extends \Magento\Framework\View\Element\Template
{
    protected $_coreRegistry = null;
    protected $_orderCollectionFactory = null;
    protected $connection;
    protected $_resource;

    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Framework\Registry $registry,
        \Magento\Framework\App\Resource $resource,
        \Magento\Sales\Model\Resource\Order\CollectionFactory $orderCollectionFactory,
        array $data = []
    ) {
        $this->_orderCollectionFactory = $orderCollectionFactory;
        $this->_coreRegistry = $registry;
        $this->_resource = $resource;
        parent::__construct($context, $data);
    }



    public function _prepareLayout()
    {
        return parent::_prepareLayout();
    }

    protected function getConnection()
    {
        if (!$this->connection) {
            $this->connection = $this->_resource->getConnection('core_write');
        }
        return $this->connection;
    }

    public function getDirectQuery()
    {
        $table=$this->_resource->getTableName('catalog_product_entity'); 
        $sku = $this->getConnection()->fetchRow('SELECT sku,entity_id FROM ' . $table);
        return $sku;
    }

    public function getJoinLeft()
    {
          $orders = $this->_orderCollectionFactory->create();
          $orders->getSelect()->joinLeft(
            ['oce' => 'customer_entity'],
            "main_table.customer_id = oce.entity_id",
            [   
                'CONCAT(oce.firstname," ", oce.lastname) as customer_name',
                'oce.firstname',
                'oce.lastname',
                'oce.email'
            ]
        );

        //$orders->getSelect()->__toString(); $orders->printlogquery(true); exit;
        return $orders; 
    }
}

vous avez utilisé l'ancien appel pour la version bêta core_write et core_read dans rc est comme ceci:

 protected  _resource;
  public function __construct(Context $context,
\Magento\Framework\App\ResourceConnection $resource)
  {
    $this->_resource = $resource;
    parent::__construct($context);

  }

obtenir l'adaptateur:

$connection = $this->_resource->getConnection(\Magento\Framework\App\ResourceConnection::DEFAULT_CONNECTION);

obtenez la table et sélectionnez:

$tblSalesOrder = $connection->getTableName('sales_order');
$result1 = $connection->fetchAll('SELECT quote_id FROM `'.$tblSalesOrder.'` WHERE entity_id='.$orderId);

cours complet d' ici

J'ai réalisé cela de la manière suivante. J'ai un fichier personnalisé où j'en crée un objet et cela a fonctionné. Vérifiez-le une fois.

class Sample extends \Magento\Framework\App\Http implements \Magento\Framework\AppInterface
{

    public function sampleMethod()
    {
        $connection = $this->_objectManager->create('\Magento\Framework\App\ResourceConnection');
        $conn = $connection->getConnection();
        $select = $conn->select()
            ->from(
                ['o' => 'catalog_category_entity_varchar']
            )
            ->where('o.value=?', '2');
        $data = $conn->fetchAll($select);
        print_r($data);
    }

}

Essayez de me faire savoir si cela fonctionne pour vous.

Ne fonctionne pas pour moi :(

Voici mon fichier de blocage:

<?php
namespace Silver\Customize\Block;
use \Magento\Framework\View\Element\Template;

class Main extends Template
{    

    protected $connection;
    protected $_resource; 

    public function __construct(
        \Magento\Backend\Block\Template\Context $context,
        \Magento\Framework\App\Resource $resource
    ) {
        $this->_resource = $resource;
        parent::__construct($context, $data);
    }  


    protected function _prepareLayout()
    {
    $this->setMessage('Hello');
    $this->setName($this->getRequest()->getParam('name'));    

    }

    public function getGoodbyeMessage()
{
    return 'Goodbye World';
}

    protected function getConnection()
    {
        if (!$this->connection) {
            $this->connection = $this->_resource->getConnection('core_write');
        }
        return $this->connection;
    } 

}

J'obtiens cette erreur: L'objet DOMDocument doit être créé.

Qu'est-ce que je rate?

For Join Query,
   protected $_objectManager; 
   public function __construct(
        \Magento\Framework\ObjectManagerInterface $objectManager,
        \Test\Vendor\Model\ResourceModel\Vendor $resourceModel
    ) {
        $this->resourceModel = $resourceModel;
        $this->_objectManager = $objectManager;
    }

$collection = $this->_objectManager->create('Test\Vendor\Model\Vendor')->getCollection();
$vendor_id = 5; //get dynamic vendor id
        $collection->getSelect()->join('secondTableName as s2','main_table.entity_id = s2.vendor_id', array('*'))->where("main_table.entity_id = ".$vendor_id);

essaye celui-là :

    //for print log on custom log file.


    $writer = new \Zend\Log\Writer\Stream(BP . '/var/log/mylog.log');
    $logger = new \Zend\Log\Logger();
    $logger->addWriter($writer);
    $logger->info('Query cron  srarting...: ');
    try{
        $themeId=273;
        $this->_resources = \Magento\Framework\App\ObjectManager::getInstance()
        ->get('Magento\Framework\App\ResourceConnection');
        $connection= $this->_resources->getConnection();

        $negotiateTable = $this->_resources->getTableName('table_name');
        $sql = "Select * FROM " . $negotiateTable;//". WHERE id = " . $themeId . ";";
        $result = $connection->fetchAll($sql);
        foreach ($result as $item){
            $logger->info('Query cron  query data...: '.json_encode($item));
        }

    }catch (\Exception $e){
        $logger->info('Query cron  query data exception'.$e->getMessage());
    }

<?php 

 $objectManager = \Magento\Framework\App\ObjectManager::getInstance(); 
 $resource = $objectManager->get('Magento\Framework\App\ResourceConnection');
 $connection = $resource->getConnection();
 $tableName = $resource->getTableName('table_name');
 $attribute_information = "Select * FROM " . $tableName; //check for the  custom attribute condition". WHERE id = " . $manufacture . ";";
// fetchOne it return the one value
$result = $connection->fetchOne($attribute_information); ?>