Unable to fetch resource with empty to-one relationship

[ammarfrahm]

When resource have an empty to-one relationship, the package unable to parse the document.

Detailed description

I believe this is a bug. I tried to fetch resource which had empty to-one relationship defined. But the package unable to parse the document because it has null object given when it expect a class which implement ItemInterface. For the record, i'm using custom model with TypeMapper.

Argument 1 passed to Swis\JsonApi\Client\Parsers\DocumentParser::getItemKey() must implement interface Swis\JsonApi\Client\Interfaces\ItemInterface, null given, called in C:\Users\afrastgeek\Projects\Playground\blog-composer\vendor\swisnl\json-api-client\src\Parsers\DocumentParser.php on line 213

However, empty relationship are recognized in the specification.

Sample resource i tried to fetch:

{
    data: {
        type: "cars",
        id: "1",
        attributes: {
            brand: "Voluptatum ab perspiciatis asperiores eos.",
            color: "Sapiente est libero cumque corporis voluptate odio.",
            created-at: 1567417355,
            updated-at: 1567417355
        },
        relationships: {
            user: {
                data: null,
                links: {
                    self: "http://blog-api.localhost/api/v1/cars/1/relationships/user",
                    related: "http://blog-api.localhost/api/v1/cars/1/user"
                }
            },
            garages: {
                data: [
                    {
                        type: "garages",
                        id: "1"
                    }
                ],
                links: {
                    self: "http://blog-api.localhost/api/v1/cars/1/relationships/garages",
                    related: "http://blog-api.localhost/api/v1/cars/1/garages"
                }
            }
        },
        links: {
            self: "http://blog-api.localhost/api/v1/cars/1"
        }
    }
}

Environment

• Version used: Apache 2.4.39, PHP 7.3.8
• Operating system and version: Windows 10
• Laravel 5.8.34
• swisnl/json-api-client 1.0.0-beta

[JaZo]

Thanks, fixed in 1.0.0-beta.3!