Magento 2.3.* - How to override ViewModel for override block?

magento.stackexchange https://magento.stackexchange.com/questions/306075

题

Magento 2.3.*

I want to override ViewModel for the override block (custom.block.name). But the issue is my .phtml a file called from the block and it is calling on some condition. Not every time call.

My frontend layout.xml file content is,

<?xml version="1.0"?>
<page layout="1column" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="core.block.name">
            <block name="custom.block.name" class="Vendor\Module\Block\CoreBlock" before="-">
            </block>
        </referenceBlock>
        <referenceBlock name="custom.block.name">
            <arguments>
                <argument name="viewModel" xsi:type="object">Vendor\Module\ViewModel\CustomModel</argument>
            </arguments>
        </referenceBlock>
    </body>
</page>

My .phtml file render from block file. If I set the template in .xml then it is working properly.

Any help will be appreciated.

有帮助吗？

解决方案

Based on your comment, You need to set custom.block.name as referenceBlock. Try to use this below code :

app/code/Vendor/Module/view/frontend/layout/customer_account.xml

<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceBlock name="customer_account_navigation">
            <block name="custom.block.name" class="Vendor\Module\Block\CoreBlock" before="-">
            </block>
        </referenceBlock>
        <referenceBlock name="custom.block.name">
            <arguments>
                <argument name="viewModel" xsi:type="object">Vendor\Module\ViewModel\CustomModel</argument>
            </arguments>
        </referenceBlock>
    </body>
</page>

NOTE: Replace the argument name(viewModel) with your core ViewModel Name.

app/code/Vendor/Module/Block/CoreBlock.php

<?php

namespace Vendor\Module\Block;

class CoreBlock extends \Magento\Framework\View\Element\Template
{

    /**
     * @var string
     */
    protected $_template = 'Vendor_Module::temp.phtml';
}

app/code/Vendor/Module/ViewModel/CustomModel.php

<?php

namespace Vendor\Module\ViewModel;

class CustomModel implements \Magento\Framework\View\Element\Block\ArgumentInterface
{

    public function getYourFunction()
    {
        $text = "test";
        return $text;
    }
}

app/code/Vendor/Module/view/frontend/templates/temp.phtml

echo $block->getData('viewModel')->getYourFunction();

NOTE: Replace viewModel with your argument name of customer_account.xml.

Output :

enter image description here

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