Magento2 – Override Configurable Product Block File

magento2overrides

How to override function getAllowProducts() from Magento\ConfigurableProduct\Block\Product\View\Type\Configurable.php in magento 2.

I want to override above function but not getting changes of function and nothing display any issue.
There are no any error display inside log file.

i will share my code here,

registration.php file,

<?php

\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::MODULE,
    'Test_Configuration',
    __DIR__
);

etc folder,

module.xml 

code is,

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
  <module name="Test_Configuration" setup_version="1.0.0"/>
</config>

i have override block inside
di.xml code is

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\ConfigurableProduct\Block\Product\View\Type\Configurable" type="Test\Configuration\Block\Outstock" />
</config>

Block folder,
Outstock.php file,

<?php
namespace Test\Configuration\Block;

class Outstock extends \Magento\ConfigurableProduct\Block\Product\View\Type\Configurable
{
    public function getAllowProducts()
    {
        if (!$this->hasAllowProducts()) {
            $products = [];
            $skipSaleableCheck = $this->catalogProduct->getSkipSaleableCheck();
            $allProducts = $this->getProduct()->getTypeInstance()->getUsedProducts($this->getProduct(), null);
            foreach ($allProducts as $product) {
                    $products[] = $product;
            }
            $this->setAllowProducts($products);
        }
        return $this->getData('allow_products');
    }   

    protected function _toHtml()
    {
        $this->setModuleName($this->extractModuleName('Magento\ConfigurableProduct\Block\Product\View\Type\Configurable'));
        return parent::_toHtml();
    } 
}

i havent any error display not any log generate for this file and module is activated. inside setup_module entry are generated.

Any suggestion for override function of configurable.php file.

Thanks.

Best Answer

you don't have to override the preference and you should not.

You can easily use a Plugin to set the allow_products data before the method is called. You find a nice tutorial about plugins here:

http://alanstorm.com/magento_2_object_manager_plugin_system

To create your Plugin, you first need to add a type to your etc/frontend/di.xml

<type name="Magento\ConfigurableProduct\Block\Product\View\Type\Configurable">
    <plugin name="changeAllowProductsBehaviour" type="Vendor\Module\Model\ConfigurableProduct\Block\Product\View\Type\Configurable\Plugin" sortOrder="10" />
</type>

Then Your Plugin Class should look like this:

<?php
namespace Vendor\Module\Model\ConfigurableProduct\Block\Product\View\Type\Configurable;

class Plugin
{
    /**
     * getAllowProducts
     *
     * @param \Magento\ConfigurableProduct\Block\Product\View\Type\Configurable $subject
     *
     * @return array
     */
    public function beforeGetAllowProducts($subject)
    {
        if (!$subject->hasData('allow_products')) {
            $products = [];
            $allProducts = $subject->getProduct()->getTypeInstance()->getUsedProducts($subject->getProduct(), null);
            foreach ($allProducts as $product) {
                    $products[] = $product;
            }
            $subject->setData('allow_products', $products);
        }

        return [];
    }

}

Be sure to clear cache and also your var/generation dir to have this changes applied

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