Magento 2 – Best Way to Check if a Custom Attribute Exists

attributescollection;custommagento2

In being careful, I want to check if my custom attribute exists before I attempt to utilize it in any way. I need to check against all attributes collection, not just the product collection. My attribute may exist on a customer, a product, or on a custom model of my own creation.

In magento 1.x, I'd use the following:

$attr = Mage::getResourceModel('eav/entity_attribute_collection')->setCodeFilter('specialty')->getFirstItem();

if ($attr->getAttributeId() > 0) {
 Do some stuff....'

I can't find anything that explicitly does something like this

Best Answer

You need use \Magento\Eav\Api\AttributeRepositoryInterface::get method for this.

For example:

try {

   $attribute = $this->attributeRepository->get($entityType, $attributeCode);

} catch (\Magento\Framework\Exception\NoSuchEntityException $e) {

    //  attribute does not exist

}

Related Solutions

Magento – Check if Customer Attribute Already Exists

Try this

Step1: trigger an event on basic of customer_save_before

<global>
    <events>
        <customer_save_before>
            <observers>
                <stockalert>
                    <type>singleton</type>
                    <class>magento37890/observer</class>
                    <method>checkDisplay</method>
                </stockalert>
            </observers>
        </customer_save_before>
    </events>
</global>

Step2:

In before event give you can get customer id if customer is old,then checking current value and past value match or not. If not match then checking this value exit in Rest of collection. If exit then send a flag (false) and

throw error   using throw Mage::exception
which prevent data save

.....

if($flagofmy==false){

                throw Mage::exception(
                    'Mage_Customer', Mage::helper('customer')->__('This customer lastname already exists'),
                    Mage_Customer_Model_Customer::EXCEPTION_EMAIL_EXISTS
                );
}

full Logic

<?php
class Stackexchange_Magento37890_Model_Observer
{
public function checkDisplay(Varien_Event_Observer $observer){
    $flagofmy=true;
    //eeeeee
    $customer=$observer->getEvent()->getCustomer();
    Mage::log('My log entry'.$customer->getId(), null, 'Magento37890.log');
    /* if customer  is old customer */
    if($customer->getId()){
            if($customer->getOrigData('lastname')!=$customer->getData('lastname')){

            Mage::log($customer->getData('lastname').'My log entry'.$customer->getId(), null, 'Magento37890.log');

            $flagofmy=$this->HasLastName($customer->getData('lastname'));
            if($flagofmy==false){

                throw Mage::exception(
                    'Mage_Customer', Mage::helper('customer')->__('This customer lastname already exists'),
                    Mage_Customer_Model_Customer::EXCEPTION_EMAIL_EXISTS
                );

                }
            }else{
                    Mage::log($customer->getData('lastname').' Step A _1'.$customer->getId(), null, 'Magento37890.log');

            }

    }else{
        /* New Customer */

            $flagofmy=$this->NewHasLastName($customer->getData('lastname'));

                throw Mage::exception(
                    'Mage_Customer', Mage::helper('customer')->__('This customer lastname already exists'),
                    Mage_Customer_Model_Customer::EXCEPTION_EMAIL_EXISTS
                );

    }

}
protected function HasLastName($lastname){


 $customer_check = Mage::getModel('customer/customer')
                ->getCollection()
                ->addAttributeToSelect('lastname')
                ->addAttributeToFilter('lastname',$lastname);

         if(count($customer_check)>0){
                return false;
         }  
         return true;     
}
}

Note: I have done basic of lastname field juts need to change field name to display_name

Magento EAV Attribute – Best Way to Check if Exists

You should be able to do something like:

$entity = 'catalog_product';
$code = 'status';
$attr = Mage::getResourceModel('catalog/eav_attribute')
    ->loadByCode($entity,$code);

if ($attr->getId()) {
    // atttribute exists
}

Best Answer

Related Solutions

Magento – Check if Customer Attribute Already Exists

Magento EAV Attribute – Best Way to Check if Exists

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