init

Observer/Predispatch.php

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+<?php
+
+namespace Techyouknow\RedirectSimpleProducts\Observer;
+
+use Magento\Framework\Event\Observer;
+use Magento\Framework\Event\ObserverInterface;
+
+class Predispatch implements ObserverInterface {
+
+    protected $_redirect;
+    protected $_productTypeConfigurable;
+    protected $_productRepository;
+    protected $_storeManager;
+    protected $scopeConfig;
+
+    public function __construct (
+        \Magento\Framework\App\Response\Http $redirect,
+        \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable $productTypeConfigurable,
+        \Magento\Catalog\Model\ProductRepository $productRepository,
+        \Magento\Store\Model\StoreManagerInterface $storeManager,
+        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
+    ) {
+        $this->_redirect = $redirect;
+        $this->_productTypeConfigurable = $productTypeConfigurable;
+        $this->_productRepository = $productRepository;
+        $this->_storeManager = $storeManager;
+        $this->scopeConfig = $scopeConfig;
+    }
+
+    public function execute(Observer $observer)
+    {
+        $pathInfo = $observer->getEvent()->getRequest()->getPathInfo();
+
+        /** If the module is disabled, we don't need to do anything. */
+        if (!$this->isModuleEnabled()) {
+            return;
+        }
+
+        /** If it's not a product view we don't need to do anything. */
+        if (strpos($pathInfo, 'product') === false) {
+            return;
+        }
+
+        $request = $observer->getEvent()->getRequest();
+        $simpleProductId = $request->getParam('id');
+        if (!$simpleProductId) {
+            return;
+        }
+
+        $simpleProduct = $this->_productRepository->getById($simpleProductId, false, $this->_storeManager->getStore()->getId());
+        if (!$simpleProduct || $simpleProduct->getTypeId() != \Magento\Catalog\Model\Product\Type::TYPE_SIMPLE) {
+            return;
+        }
+
+        $configProductIds = $this->_productTypeConfigurable->getParentIdsByChild($simpleProductId);
+
+        foreach ($configProductIds as $configProductId) {
+            try {
+                $configProduct = $this->_productRepository->getById($configProductId, false, $this->_storeManager->getStore()->getId());
+            } catch (NoSuchEntityException $e) {
+                continue;
+            }
+
+            $configType = $configProduct->getTypeInstance();
+            $attributes = $configType->getConfigurableAttributesAsArray($configProduct);
+
+            $options = [];
+            foreach ($attributes as $attribute) {
+                $id = $attribute['attribute_id'];
+                $value = $simpleProduct->getData($attribute['attribute_code']);
+                $options[$id] = $value;
+            }
+
+            // Pass on any query parameters to the configurable product's URL.
+            $query = $request->getQuery();
+            if (is_object($query)) {
+                $query = $query->toArray();
+            }
+            $query = $query ? '?' . http_build_query($query) : '';
+
+            // Generate hash for selected product options.
+            $hash = $options ? '#' . http_build_query($options) : '';
+
+            $configProductUrl = $configProduct->getUrlModel()
+                                              ->getUrl($configProduct) . $query . $hash;
+            $this->_redirect->setRedirect($configProductUrl, 301);
+        }
+    }
+
+    public function isModuleEnabled() {
+        $storeScope = \Magento\Store\Model\ScopeInterface::SCOPE_STORE;
+        return $this->scopeConfig->getValue('techyouknowredirectsimpleproducts/general/enable', $storeScope);
+    }
+}

README.md

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+
+# Redirect Simple products to its parent configurable For Magento 2
+Redirect simple products to its parent configurable product with pre-selected configurable options.
+
+This extension is configurable on the backend.
+
+![docs](https://i.imgur.com/uq58SGt.png)
+
+## Usage Instructions
+
+TechYouKnow RedirectSimpleProducts Extension - Installation steps
+
+INSTALL TechYouKnow RedirectSimpleProducts EXTENSION FROM ZIP FILE ON YOUR DEV INSTANCE. TEST THAT THE EXTENSION
+WAS INSTALLED CORRECTLY BEFORE SHIPPING THE CODE TO PRODUCTION
+
+### INSTALLATION
+
+#### Composer Installation
+* Go to your magento root path
+* Execute command `cd /var/www/Magento` or
+ `cd /var/www/html/Magento` based on your server Centos or Ubuntu.
+* run composer command: `composer require techyouknow/module-redirect-simple-products`
+- To enable module execute `php bin/magento module:enable Techyouknow_RedirectSimpleProducts`
+- Execute `php bin/magento setup:upgrade`
+- Execute `php bin/magento setup:di:compile`
+- Optional `php bin/magento setup:static-content:deploy`
+- Execute `php bin/magento cache:clean`
+
+#### Manual Installation
+* extract files from an archive.
+* Execute command `cd /var/www/Magento/app/code` or
+ `cd /var/www/html/Magento/app/code` based on your server Centos or Ubuntu.
+* Move files into Magento2 folder `app/code/Techyouknow/RedirectSimpleProducts`. If you downloaded zip file on github, you need to
+create directory `app/code/Techyouknow/RedirectSimpleProducts`.
+- To enable module execute `php bin/magento module:enable Techyouknow_RedirectSimpleProducts`
+- Execute `php bin/magento setup:upgrade`
+- Optional `php bin/magento setup:static-content:deploy`
+- Execute `php bin/magento setup:di:compile`
+- Execute `php bin/magento cache:clean`
+
+## Requirements
+
+Techyouknow RedirectSimpleProducts Extension For Magento2 requires
+* Magento version 2.0 and above
+* PHP 7.0 or greater

composer.json

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+{
+    "name": "techyouknow/module-redirect-simple-products",
+    "description": "Redirect simple products to its parent configurable product with pre-selected configurable options.",
+    "require": {
+      "php": "7.0.2|7.0.4|~7.0.6|^7.1.0|^8.0"
+    },
+    "type": "magento2-module",
+    "version": "1.0.0",
+    "license": [
+      "OSL-3.0",
+      "AFL-3.0"
+    ],
+    "authors": [
+      {
+        "name": "TechYouKnow",
+        "role": "Owner"
+      },
+      {
+          "name": "Amjad M",
+          "role": "Developer"
+      }
+    ],
+    "autoload": {
+      "files": [
+        "registration.php"
+      ],
+      "psr-4": {
+        "Techyouknow\\RedirectSimpleProducts\\": ""
+      }
+    }
+  }

etc/adminhtml/system.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
+    <system>
+        <tab id="techyouknow" translate="label" sortOrder="10">
+            <label>Techyouknow</label>
+        </tab>
+        <section id="techyouknowredirectsimpleproducts" translate="label" sortOrder="130" showInDefault="1" showInWebsite="1" showInStore="1">
+            <class>separator-top</class>
+            <label>Redirect Simple Products</label>
+            <tab>techyouknow</tab>
+            <resource>Techyouknow_RedirectSimpleProducts::redirectsimpleproducts_config</resource>
+            <group id="general" translate="label" type="text" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
+                <label>General Configuration</label>
+                <field id="enable" translate="label" type="select" sortOrder="1" showInDefault="1" showInWebsite="1" showInStore="1">
+                    <label>Module Enable</label>
+                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
+                </field>
+            </group>
+        </section>
+    </system>
+</config>

etc/config.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Store:etc/config.xsd">
+    <default>
+        <redirectsimpleproducts>
+            <general>
+                <enable>1</enable>
+            </general>
+        </redirectsimpleproducts>
+    </default>
+</config>

etc/events.xml

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+<?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="controller_action_predispatch_catalog_product_view">
+        <observer name="techyouknow_redirectsimple_products_observer_predispatch" instance="Techyouknow\RedirectSimpleProducts\Observer\Predispatch"/>
+    </event>
+</config>

etc/module.xml

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+<?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="Techyouknow_RedirectSimpleProducts" setup_version="1.0.0" />
+</config>

registration.php

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+<?php
+
+\Magento\Framework\Component\ComponentRegistrar::register(
+    \Magento\Framework\Component\ComponentRegistrar::MODULE,
+    'Techyouknow_RedirectSimpleProducts',
+    __DIR__
+);