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 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>

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

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.

2
  • On the event catalog_category_save_after add a block is a totally wrong idea. For creating a block you need a layout object. – Amit Bera Feb 26 '19 at 11:19
  • @AmitBera what do you mean I need to create a layout object? Can you please provide a code sample. I'm triggering the retrieval of .phtml file when I try to save the category. Would appreciate if you can provide on how to implement it. I'm quite new with magento – MadzQuestioning Feb 26 '19 at 14:08
2

Change this line:

    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::Category/index.phtml')->toHtml();        

to

    $block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::category/index.phtml')->toHtml();        

[Update]

<?php
namespace SR\MagentoCommunity\Observer;

use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\Event\Observer;

class CatalogCategorySaveAfter implements ObserverInterface
{
    private $layout;

    public function __construct(
        \Magento\Framework\View\Layout $layout
    ) {
        $this->layout = $layout;
    }

    public function execute(Observer $observer)
    {
        $block = $this->layout->createBlock('SR\MagentoCommunity\Block\Category')->setTemplate('SR_MagentoCommunity::category/index.phtml')->toHtml();
        error_log($block);
    }
}

Template location:

app/code/SR/MagentoCommunity/view/base/templates/category/index.phtml

And

app/code/SR/MagentoCommunity/etc/adminhtml/events.xml

<?xml version="1.0" encoding="UTF-8"?>
<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="SR\MagentoCommunity\Observer\CatalogCategorySaveAfter" />
    </event>
</config>
9
  • I tried this. I made the Category as capital because that's the name of the folder inside the template folder. I tried changing the name to small letter both from the file and the folder itself but I get the same error – MadzQuestioning Feb 26 '19 at 1:39
  • Can you added observer full class and which event do you observe? – Sohel Rana Feb 26 '19 at 4:12
  • Updated my question – MadzQuestioning Feb 26 '19 at 4:27
  • Check updated answer – Sohel Rana Feb 26 '19 at 10:46
  • Tried this but the same thing. Do I need to run anything to make this work? I tried running bin/magento cache:clean, bin/magento setup:di:compile but nothing works – MadzQuestioning Feb 26 '19 at 13:13
0
$block = $layout->createBlock('VENDOR\MYModule\Block\Category')->setTemplate('VENDOR_MYModule::category/index.phtml')->toHtml();
2

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