Product Extension attributes is not return when request from rest api

Question

I have created an extension attribute for a product.

<extension_attributes for="Magento\Catalog\Api\Data\ProductInterface">
    <attribute code="product_options" type="Sample\Module\Api\Data\ProductOptionInterface" />
</extension_attributes>

So I am able to set product_options to the product.

But when I request using API

http://10.16.16.216/example/magento/rest/all/V1/products/mypsku

Then JSON response is no contained my extension attribute. product_options

My plugin

<type name="Magento\Catalog\Api\Data\ProductInterface">
    <plugin name="set_product_options" type="Sample\Module\Plugin\Catalog\ProductOption"/>
</type>

ProductOption

Answer 1

You need to use after plugin for Magento\Catalog\Api\Data\ProductInterface (afterGet and afterGetList function). For that use, di.xml and your custom plugin class for ProductInterface. Then in response of API, your custom extension attribute will be available.