Implement multi-language search in a single store

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Examples of default records

• Index name: magento2_products_en
  JSON

  {
    "name": "Shirt",
    "description": "Very nice blue shirt",
    // ... other attributes
  }
  
• Index name: magento2_products_de
  JSON

  {
    "name": "Hemd",
    "description": "Sehr schönes blaues Hemd",
    // ... other attributes
  }
  
• Index name: magento2_products_es
  JSON

  {
    "name": "Camisa",
    "description": "Muy bonita camisa azul",
   // ... other attributes
  }
  

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Implement multi-language search

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Create a record in the extension

1. Create a custom extension, which lets you listen to the extension’s custom events.
2. Create an event listener for the algolia_after_create_product_object event, the same way as written in the custom event extension algolia_products_index_before_set_settings.
3. From the $observer variable passed to the execute() method, fetch:
   • custom_data
   • productObject
   • subProducts
4. The Algolia record is an array in the custom_data object and can be modified like any other PHP array.
5. Fetch searchable attributes, such as name, description, or manufacturer, in all other languages and add it to the record in custom_data. Structure the data according to the example record.

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Example of an observer’s execute() method

public function execute(Observer $observer)
{
    /* @var \Magento\Catalog\Model\Product $product */
    $product = $observer->getData('productObject');

    /*
     * Fetch language-specific values based on $product
     */

    $productRecord = $observer->getData('custom_data');

    $originalName = $productRecord['name'];
    $originalDescription = $productRecord['description'];

    $productRecord['name'] = [
        'en' => $originalName,
        'de' => $germanName,
        'es' => $spanishName,
    ];

    $productRecord['description'] = [
        'en' => $originalDescription,
        'de' => $germanDescription,
        'es' => $spanishDescription,
    ];
}

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Index settings

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Showcase record

{
    "name": {
        "en": "Shirt",
        "de": "Hemd",
        "es": "Camisa"
    },
    "description": {
        "en": "Very nice blue shirt",
        "de": "Sehr schönes blaues Hemd",
        "es": "Muy bonita camisa azul"
    }
    // ... other attributes
}