come si chiama Blocchi Controller Magento2?

magento.stackexchange https://magento.stackexchange.com//questions/87629

  •  13-12-2019
  •  | 
  •  

Domanda

Voglio getBlock Adb/Block/Index in controller Adb/Controller/Category/View.Quindi, Come fare?

Modifica

in un controller.

namespace Addon\Faq\Controller\Category;


class View extends \Addon\Faq\Controller\Category
{
    /**
     * @var \Magento\Framework\Controller\Result\ForwardFactory
     */
    protected $_coreRegistry = null;
    /**
     * @var \Magento\Framework\View\Result\PageFactory
     */
    protected $resultPageFactory ;

    /**
     * @param \Magento\Backend\App\Action\Context $context
     * @param \Magento\Framework\View\Result\PageFactory $resultPageFactory
     */
    public function __construct(
        \Magento\Framework\App\Action\Context $context, 
        \Magento\Framework\View\Result\PageFactory $resultPageFactory,
        \Magento\Framework\Registry $registry

    ) {
        $this->resultPageFactory  = $resultPageFactory;
        $this->_coreRegistry = $registry;
        parent::__construct($context);
    }

    /**
     * Product list page
     *
     * @return \Magento\Backend\Model\View\Result\Page
     */
    public function execute()
    {   
        $resultPage = $this->resultPageFactory ->create();
        $blockInstance = $resultPage->getLayout()->getBlock('category.index');

    }
}

layout in frontend

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../../../lib/internal/Magento/Framework/View/Layout/etc/page_configuration.xsd"> 
    <body>
        <referenceContainer name="content">
            <block class="Addon\Faq\Block\Faq" name="category.index" template="Addon_Faq::view.phtml"/>               
        </referenceContainer>
    </body>
</page>

Non blocco chiamata Faq

È stato utile?

Soluzione

Il tuo ritorno nulla nel tuo comando EXECUTE.Ritorno Risultato nel tuo controller 

    $resultPage = $this->resultPageFactory->create();

    return $resultPage;
.

Il tuo nome XML dovrebbe essere faq_category_view.xml.

Altri suggerimenti

Se si desidera istanziare un blocco è necessario aggiungere per iniettare nel costruttore un'istanza di \Magento\Framework\View\LayoutFactory 

...
protected $layoutFactory;
...
public function __construct(
   ...
   \Magento\Framework\View\LayoutFactory $layoutFactory,
   ...
) {
   ...
   $this->layoutFactory = $layoutFactory;
   ...
}
.

Quindi puoi istanziare un blocco come questo: 

$this->layoutFactory->create()->createBlock('Block\Class\Here');
.

Se si desidera accedere a un blocco definito nel layout è necessario iniettare nel costruttore ed istanza di \Magento\Framework\View\Result\PageFactory 

...
protected $resultPageFactory;
...
public function __construct(
   ...
   \Magento\Framework\View\Result\PageFactory $resultPageFactory,
   ...
) {
   ...
   $this->resultPageFactory = $resultPageFactory;
   ...
}
.

Allora sarai in grado di accedere al blocco come questo: 

$resultPage = $this->resultPageFactory->create();
$blockInstance = $resultPage->getLayout()->getBlock('block.name.here');
.

  1. Creare il blocco: 

     <?php
    namespace Training\Test\Block;
    class Test extends \Magento\Framework\View\Element\AbstractBlock
    {
       protected function _toHtml() {
         return "<b>Hello world from block!</b>";
       }
    }

  2. Creare un'azione di classe:

    <?php
namespace Training\Test\Controller\Block;
class Index extends \Magento\Framework\App\Action\Action
   {
   public function execute() {
     $layout = $this->_view->getLayout();
     $block = $layout->createBlock('Training\Test\Block\Test');
     $this->getResponse()->appendBody($block->toHtml());
   }
}

Vedi il codice principale:

STEP 1

https://github.com/magento/magento2/blob/02e0378c33054acc0cdb8d731d1e2b2c2069bc1b/app/code/magento/catalog/controller/adminhtml/category/edit.php#l26-L34 

public function __construct(
    \Magento\Backend\App\Action\Context $context,
    \Magento\Framework\View\Result\PageFactory $resultPageFactory,
) {
    parent::__construct($context);
    $this->resultPageFactory = $resultPageFactory;
}
.

STEP 2

https://github.com/magento/magento2/blob/02e0378c33054ACB0CDB8D731D1E2B2C2069BC1B/App/Code/Magento/catalog/Controller/Adminhtml/category/edit.php#l69-L70 

/** @var \Magento\Backend\Model\View\Result\Page $resultPage */
$resultPage = $this->resultPageFactory->create();
.

STEP 3

https://github.com/magento/magento2/blob/02e0378c33054acc0cdb8d731d1e2b2c2069bc1b/app/code/magento/catalog/controller/adminhtml/category/edit.php#L119 

$block = $resultPage->getLayout()->getBlock('catalog.wysiwyg.js');
.

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