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How can I get the associated articles programmatically in my custom component function?

I have my custom component and I am creating a new article for a multilingual site, so I need to associate articles of different languages.

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You can use JLanguageAssociations::getAssociations. This function will return an array containing associated items. You can also check if the language filter Items Associations parameter is enabled using JLanguageAssociations::isEnabled().

Here's an example from ROOT/administrator/components/com_content/models/article.php:

// Load associated content items
$app = JFactory::getApplication();
$assoc = JLanguageAssociations::isEnabled();

if ($assoc)
{
    $item->associations = array();

    if ($item->id != null)
    {
        $associations = JLanguageAssociations::getAssociations('com_content', '#__content', 'com_content.item', $item->id);

        foreach ($associations as $tag => $association)
        {
            $item->associations[$tag] = $association->id;
        }
    }
}

return $item;

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