Filter nested attributes

[rcrowe]

Given the following attributes:

"attributes": {
    "username": "vivalacrowe",
    "private": {
        "email": "hello@vivalacrowe.com",
        "name": "Rob"
    }
}

How do you filter to only get the email address. I've tried:

$params = new \Neomerx\JsonApi\Parameters\EncodingParameters(
    null,
    [
        'user' => ['private.email']
    ]
);

But this returns:

{
    "data": {
        "type": "user",
        "id": "12287",
        "links": {
            "self": "https:\/\/api.crowdcube.com\/users\/12287\/followers"
        }
    }
}

Filtering seems to only work on top level keys?

[neomerx]

@rcrowe
Short answer: no it doesn't.
Longer answer: it's probably should not by the spec but we might to it.
JSON-API spec separates filters and field sets. As the package supports both I'd prefer call the feature fieldsets.
As for fieldsets and attributes as a part of fields it looks that even for complex objects are attribute values but not attribute keys. However if it's not forbidden and not very slow we might try to add it.

[neomerx]

@rcrowe Do you want to start with this one? I can start with #48 as it might require deeper knowledge of this package.

[rcrowe]

Sure, as I'm new to the library want to point me in the right direction? 😄

[neomerx]

Check out #48 first and this one 😉

[neomerx]

@rcrowe I've added a test for this issue. Can you please add filtering the way you like? You will need to change this file.