ProjectsQuery.php

<?php
namespace App\GraphQL\Queries\System\TranslationManager;

// Project Model
use App\System\TranslationManager\Project\Project;

use GraphQL\Type\Definition\Type;
use Rebing\GraphQL\Support\Query;
use Rebing\GraphQL\Support\SelectFields;

class ProjectsQuery extends Query
{
    protected $attributes = [
        'name' => 'ProjectsQuery',
        'description' => 'A query of projects'
    ];

    public function type()
    {
        return Type::listOf(GraphQL::type('projects_type'));
    }

    public function args()
    {
        return [
            'id' => ['name' => 'id', 'type' => Type::int()],
            'status' => ['name' => 'status', 'type' => Type::string()]
        ];
    }

    public function resolve($root, $args, SelectFields $fields)
    {
        return Project::where(function ($query) use ($args) {
            if (isset($args['status'])) {
                $query->where('status', $args['status']);
            }

            if (isset($args['id'])) {
                $query->where('id', $args['id']);
            }
        })
            ->select($fields->getSelect())
            ->with($fields->getRelations())
            ->get();
    }
}