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edited Feb 26, 2019 at 14:10

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UPDATE:

Tried my code using the Frontend controller/action access and the block successfully loaded. Now I think there's another way or implementation when retrieving the .phtml in the Admin part or in the Observer. Also note that the observer is triggered when I try to edit/save a catalog->category.

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edited Feb 26, 2019 at 4:26

MadzQuestioning

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The content of my .phtml is just a simple <h1>Hello world</h1>. Now in my Observer I'm trying to load this .phtml file but I can't load it and getting the error. The content of my Observer Observer\CategoryObserver is below

public function execute(\Magento\Framework\Event\Observer $observer)
{           
    $layout = $this->_layout->create();
    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::Category/index.phtml')->toHtml();        

    $this->_logger->debug("[DEBUG]::" , [$block]);
}

Here's the content of my events.xml

<?xml version="1.0"?>
    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="catalog_category_save_after">
        <observer name="category-edit" instance="VENDOR\MYModule\Observer\CategoryObserver" />
    </event>   
</config>

The content of my .phtml is just a simple <h1>Hello world</h1>. Now in my Observer I'm trying to load this .phtml file but I can't load it and getting the error. The content of my Observer is below

public function execute(\Magento\Framework\Event\Observer $observer)
{           
    $layout = $this->_layout->create();
    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::Category/index.phtml')->toHtml();        

    $this->_logger->debug("[DEBUG]::" , [$block]);
}

The content of my .phtml is just a simple <h1>Hello world</h1>. Now in my Observer I'm trying to load this .phtml file but I can't load it and getting the error. The content of my Observer Observer\CategoryObserver is below

public function execute(\Magento\Framework\Event\Observer $observer)
{           
    $layout = $this->_layout->create();
    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::Category/index.phtml')->toHtml();        

    $this->_logger->debug("[DEBUG]::" , [$block]);
}

Here's the content of my events.xml

<?xml version="1.0"?>
    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="catalog_category_save_after">
        <observer name="category-edit" instance="VENDOR\MYModule\Observer\CategoryObserver" />
    </event>   
</config>

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asked Feb 25, 2019 at 17:34

MadzQuestioning

709
12
33

Loading a .phtml file within an Observer Magento 2

I'm trying to load my .phtml files in the template folder within my observer but I'm getting this error

Invalid template file: 'VENDOR_MYModule::Category/index.phtml' in module: 'VENDOR_MYModule' block's name: 'category_0'

Here's the structure of my files

app
 + code
    + VENDOR
      + MYModule
        + Block
            - Category.php
        + Controller
            + Category
               - Index.php
        + etc
            + frontend
                - routes.xml
        + Observer
            - CategoryObserver.php
        + view
            + frontend
                + layout
                    - header_category_index.xml
                + templates
                    + category
                        - index.phtml

Now the content of my Block/Category.php is below

<?php
namespace VENDOR\MYModule\Block;

class Category extends \Magento\Framework\View\Element\Template 
{
    public function __construct(
        \Magento\Backend\Block\Template\Context $context,       
        array $data = []
    ){
        parent::__construct($context, $data);
    }

}

The content of my Controller/Category/Index.php is below

<?php
namespace VENDOR\MYModule\Controller\Category;

class Index extends \Magento\Framework\App\Action\Action
{
    protected $_pageFactory;    

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

    public function execute()
    {       
        return $this->_pageFactory->create();
    }   
}

The content of the layout/header_category_index.xml is below

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <referenceContainer name="content">
        <block class="VENDOR\MYModule\Block\Category" name="category_items" template="VENDOR_MYModule::category/index.phtml" />
    </referenceContainer>
</page>

The content of my .phtml is just a simple <h1>Hello world</h1>. Now in my Observer I'm trying to load this .phtml file but I can't load it and getting the error. The content of my Observer is below

public function execute(\Magento\Framework\Event\Observer $observer)
{           
    $layout = $this->_layout->create();
    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::Category/index.phtml')->toHtml();        

    $this->_logger->debug("[DEBUG]::" , [$block]);
}

But I'm getting the error as mentioned above. Any idea on how to load this .phtml file to the observer? I'm planning to write the content of this .phtml file to a .txt file. But I can't proceed since I tried outputting it but I'm still getting an error

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Loading a .phtml file within an Observer Magento 2