GETing products REST API unconsistent extension_attributes results

[apiuser]

Feature request from jpdata, posted on GitHub Jun 17, 2016

Steps to reproduce

1. Install Magento 2.0.7 with Sample Data
2. Get all products with REST API for example GET /rest/V1/products?searchCriteria=

Expected result

1. All products and every pruct with a produc_links array and every product_link with a extension_attributes array .

Actual result

1. All products and every pruct with a produc_links array and every product_link with a extension_attributes but for some products it returns an array even empty [] for others with one element does return the single element (not in an array). It should return an array allways, regarding the number of elements returned.

Some time it returns: "extension_attributes":[] some times returns: "extension_attributes":{"qty":0}

As I said it should allways return an array:

"extension_attributes":[{"qty":0}]

[apiuser]

Comment from choukalos, posted on GitHub Jun 20, 2016

Hi @jpdata this is a feature request. Current behavior of Magento relies on an extensible object to be plugged into a method. We plug in the extensible objects for the detailed single object calls. For GetList we do not do this as there would be a significant performance issue (system would have to loop through each object and call every extensible object for the current framework resulting in a large # of database calls).

[apiuser]

Comment from jpdata, posted on GitHub Jun 20, 2016

I'm developing an app in C# and i'm trying to deserialize Json objets returned to a class generic as I could build it, but it fails since the deserialization utility i'm using (Json.NET) expects and array but there is a single objetct instead. Now I need to find a work around. :-P

Thank you very much.

[apiuser]

Comment from choukalos, posted on GitHub Jun 22, 2016

Assigning to Mark to discussion with team.