How to add as exposed filter a product attribute in Commerce's orders view? I have a drupal 8 commerce website.
The Orders page is a view that comes with commerce where all the orders are listed.
Is it possible to add/create ( on the website or programatically ) an exposed filter based on a PRODUCT ATTRIBUTE to show all the orders containing a value of that product attribute?

For example: for a product attribute called ORIGIN, I would like an exposed filter in the orders view that would allow me to choose between 2 values: Los Angeles or San Francisco.

Some orders will show up in both because they will have different products with different ORIGIN value product attributes.

I tried to modify the orders view but I couldnt find any product attributes nor a relationship to products. I tried to add a relationship to order item but that didn't help expose any of the product attribute fields.
Product's attributes are set through the product variation. You need to add the Variations through a relationship and you will have attributes available there.



After that your attributes can be added as exposed filters. 



Sorry I don´t have any English sites available but pay close attention to captures.