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I want that when i add an existing color an exception will be raised so how to proceed and which file do i have to override and thanks in advance.

1

You can create a custom function to check color value already exists or not as follows:

protected $_resource;

public function __construct(
    \Magento\Framework\App\ResourceConnection $resource
) {
    $this->_resource = $resource;
}

public function checkColorExists($color) {
    $connection = $this->_resource->getConnection(\Magento\Framework\App\ResourceConnection::DEFAULT_CONNECTION);

    $result = $connection->fetchAll("SELECT DISTINCT value FROM `eav_attribute_option_value` WHERE option_id IN (SELECT option_id FROM `eav_attribute_option` WHERE `attribute_id` = (SELECT attribute_id FROM eav_attribute WHERE attribute_code = 'color'))");

    foreach ($result as &$value) {
        $value = $value['value'];
    }

    if (in_array($color, $result)) {
        // Throw exception
    }
    else {
        return true;
    }
}

Hope this may helpful!

  • do i have to put this code in observer event catalog_entity_attribute_save_before to check or in other place and thanks for your replay – Developper Magento May 30 '19 at 9:33
  • Thanks for the upvote. I have not tried yet catalog_entity_attribute_save_before event, but yes ofcourse try once. And if works fine, then please accept this answer. – Dhara Bhatti May 30 '19 at 9:36
  • ok i will check this immediatly – Developper Magento May 30 '19 at 9:42
  • i can't understand this part of your code foreach ($result as &$value) { $value = $value['value']; } what that mean – Developper Magento May 30 '19 at 9:48
  • Please do echo "<pre>"; print_r($result); before and after foreach. You will get idea. – Dhara Bhatti May 30 '19 at 9:50

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