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Knowing About Magento 2 Extension Attributes in Detail

<br>In order to bring in more stability to Magento 2, it integrated Service Contracts. On the other hand, Magento 2 Extension Attributes are utilized to enable customization of service contracts. This article will help you know more about extensions attributes in Magento 2.Read more...

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Knowing About Magento 2 Extension Attributes in Detail

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  1. http://www.appsmarketplace.co.in/

  2. Knowing About Magento 2 Extension Attributes in Detail • In order to bring in more stability to Magento 2, it integrated Service Contracts. On the other hand, Magento 2 Extension Attributes are utilized to enable customization of service contracts. This article will help you know more about extensions attributes in Magento 2 What are Service contracts? • Service contracts form the prime elements of Magento 2. They are basically sets of php interfaces defining some elements of a particular module. • With the creation of interfaces the contracts are defined that are categorized, implemented and followed. When you have a transparent contract it becomes easy to understand what is expected from a specific class and reach solid executions. There are plenty of benefits associated with the Service Contract system http://www.appsmarketplace.co.in/

  3. Add new properties in M1 • In M1 adding information to quote, invoice, order, etc was the basic requirement. The simplest method to attain that was to include fields to coinciding database tables such as -sales_flat_quote and sales_flat_order and then fill it through fieldsets. <global> ... <fieldsets> <sales_convert_quote> http://www.appsmarketplace.co.in/

  4. <your_special_attribute> <to_order>*</to_order> </your_special_attribute> </sales_convert_quote> </fieldsets> </global> • It transforms a quote field to order. This attribute then becomes the section of order class’s $_data property which can be accessed easily with $order->getYourSpecialAttribute(). http://www.appsmarketplace.co.in/

  5. M2 point of view • As stated earlier, Magento 2 works with interface method as there will be no immediate accessor methods present which were put to use in M1. Here is the Service Contract for - Sales Order class <?php namespace Magento\Sales\Api\Data; interface OrderInterface extends \Magento\Framework\Api\ExtensibleDataInterface { ... /** * Gets the grand total for the order. * * @return float Grand total. */ http://www.appsmarketplace.co.in/

  6. public function getGrandTotal(); /** * Gets the shipping amount for the order. * * @return float|null Shipping amount. */ public function getShippingAmount(); /** ** “Retrieve existing extension attributes object or create a new one” * * @return \Magento\Sales\Api\Data\OrderExtensionInterface|null */ public function getExtensionAttributes(); http://www.appsmarketplace.co.in/

  7. /** * Set an extension attributes object. * * @param \Magento\Sales\Api\Data\OrderExtensionInterface $extensionAttributes * @return $this */ public function setExtensionAttributes(\Magento\Sales\Api\Data\OrderExtensionInterface $extensionAttributes); } • Yes, you will observe a plenty of getters & setters in the form of entities which are considered as data transfer items. http://www.appsmarketplace.co.in/

  8. New attribute addition • It is not possible to edit the interface often when you wish to include a new attribute as that would affect the backward compatibility. The whole idea is to remain in coordination with service contracts. Limitations • At this stage, we need to bypass the interface because most classes continue to still extend \Magento\Catalog\Model\AbstractModel but don’t carry out over one reason. • In case you set a different preference for this particular service contract then your code will break • The change remains undocumented as it is based on magic • Then what is the best method to add new attributes in a modest manner that works well with the interfaces’ limitations. http://www.appsmarketplace.co.in/

  9. Understanding Extension attributes • Just observe the other end of your interface and here are the two methods /** * Retrieve existing extension attributes object or create a new one. * * @return \Magento\Sales\Api\Data\OrderExtensionInterface|null */ public function getExtensionAttributes(); /** * Set an extension attributes object. http://www.appsmarketplace.co.in/

  10. * * @param \Magento\Sales\Api\Data\OrderExtensionInterface $extensionAttributes * @return $this */ public function setExtensionAttributes(\Magento\Sales\Api\Data\OrderExtensionInterface $extensionAttributes); • Extension attributes are Magento 2’s aspects to offer increased stability and customisability too. http://www.appsmarketplace.co.in/

  11. Types of attributes and features • Custom and Entity-Attribute-Value (EAV) attributes • Custom attributes are the ones added on the merchant’s behalf. The merchant can easily add the attributes using the Admin panel in Magento. Custom attributes are part of EAV attributes • Objects that utilize EAV attributes basically store values in different MySQL tables. The Customer & Catalog modules are known as the primary models that utilize EAV attributes. Other modules, like GiftMessage, ConfigurableProduct, and Tax, make use of EAV functionality for Catalog. Extension attributes • Extension attributes are basically newly introduced elements in Magento 2. They are utilized to extend functionality as well they make use of a complex set of data types rather than the custom attributes. You will not find these attributes in the Magento Admin. http://www.appsmarketplace.co.in/

  12. Conclusion • Certainly, the efforts involved for extension attributes in Magento 2 are more than in Magento, then, you may ask why should you go for it? • The changes that come with extension attributes on service contracts are far ahead in terms of stability of the platform while attaining extensibility. Also, there are a number of benefits you can reap in using extension attributes. The benefits include the automatic availability of attribute data added through API requests. http://www.appsmarketplace.co.in/

  13. Read the complete story follow the link below:- Knowing About Magento 2 Extension Attributes in Detail Read Blog: http://www.appsmarketplace.co.in/blog/ http://www.appsmarketplace.co.in/

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