Hi. I'm developing a module where I want to add a new entity called "course" and I want to create an "extension attribute" to allows to the customers to select a course on the moment they are adding products to his shopiing cart.
In my module, I have created an extensions_attributes.xml
<?xml version="1.0"?>
<config>
<extension_attributes for="\Magento\Catalog\Api\Data\CustomOptionInterface">
<attribute code="course" type="datatype">
<resources>
<resource ref="Magento_CatalogInventory::cataloginventory" />
</resources>
<join reference_table="ie_course" reference_field="course_id" join_on_field="entity_id">
<field>name</field>
</join>
</attribute>
</extension_attributes>
</config>
After I cleared the var directory and regenerate the depencendy injections class I think I would see the methods getCourse and setCourse on a file called /var/generation/Magento/Catalog/CustomOptionInterface.php but this file doesn't exists
The most similar file is ProductOptionsExtensionInterface.php but I didn't find anything related with my new methods
Maybe I misunderstood some concepts of the Magento Documentation. These are the links I'm following
http://devdocs.magento.com/guides/v2.0/extension-dev-guide/attributes.html
http://magento.stackexchange.com/questions/91992/magento-2-how-to-save-custom-field-added-in-the-for...
Could you please point me on the right direction?
Thanks very much!
