Cart Attribute is null in Discounts API

[Nikolow]

Hello,

a few days ago I started to play with the discounts API (product-discounts function). I have tried to read the cart attributes, but the query always returns null. I have also tested to see if any cart attributes are set in the shop (via liquid code) and at least 3 cart attributes are set. It seems that the query is returning always null.

The query:

query Input 
{
  cart 
  {
    attribute{ key, value }
  }
}

The result:

{
  "cart": {
    "attribute": null
  }
}

Cart Attributes (check) Liquid Code:

<script>
      console.log("Cart Attributes: ");
      {% for attribute in cart.attributes %}console.log("{{ attribute | first }}: {{ attribute | last }}");{% endfor %}
</script>

Cart Attributes (check) console output:

Am I missing something or this is an issue with the API?

[adampetro]

The attribute field is for fetching a single attribute, and you can specify which attribute you would like to fetch with the key argument. For example:

query Input {
  cart {
    attribute(key: "some-key") { value }
  }
}

[Nikolow]

You are absolutely right.
Is there a way to retrieve more than 1 attribute? (for example all attributes)

[adampetro]

You cannot retrieve all attributes. You can retrieve multiple by aliasing the selections like this:

query Input {
  cart {
    attribute1: attribute(key: "key1") { value }
    attribute2: attribute(key: "key2") { value }
  }
}