Problems with interfaces about graphql-laravel HOT 6 CLOSED

I haven't tried using interfaces with GraphQL, so I'm not sure how it sould work. How do you define the fields separately (outside the fields function) to be implemented? Could you please show me code of the class and interface.

from graphql-laravel.

I made a simple example to demonstrate. There's nothing fancy going on when resolving individual fields:

interface:

`class TestInterface extends InterfaceType {

protected $attributes = [
    'name' => 'TestInterface',
    'description' => 'Test interface',
];

public function fields()
{
    return [
        # Fields
        'type' => [
            'type' => Type::string(),
            'description' => 'the type',
        ],
        'field1' => [
            'type' => Type::string(),
            'description' => 'field 1',
        ]
    ];
}

public function resolveType($root) {
    return GraphQL::type('TestObject');
}

}`

Test type:

`class TestObject extends GraphQLType {

protected $attributes = [
    'name'          => 'TestObject',
    'description'   => 'A test object',
    'model'         => Test::class,
];

public function fields()
{
    return [
        # Fields
        'type' => [
            'type' => Type::string(),
            'description' => 'the type',
        ],
        'field1' => [
            'type' => Type::string(),
            'description' => 'field1',
        ],
        'field2' => [
            'type' => Type::string(),
            'description' => 'field2',
        ]
    ];
}

public function interfaces() {
    return [
        GraphQL::type('TestInterface')
    ];
}

}`

from graphql-laravel.

Just a quick note I tried switching to the Folklore package which your version is based on at it runs fine on that, so it looks like there is a bug here.

from graphql-laravel.

Ah, I didn't even remember the interfaces function was a possibility. I will try to find the time to look into it over the weekend.

from graphql-laravel.

I couldn't currently find the bug and unfortunately don't have too much spare time to deal with this. But if you can figure it out, feel free to submit a PR :)

from graphql-laravel.

I digged a bit into the code and it seems the problem is in the SelectFields class. It tries to fetch all selectable fields but it only knows it's from type TestInterface. It tries to find the field field2 but can't find it because the interface isn't yet resolved to TestObject.
I think it can be fixed by selecting all fields of possible casts (i.e. ... on TestObject).
But I don't know if such a function exists to get all possible cast.

from graphql-laravel.