如何在laravel中使用嵌套循环

@foreach($outerArray as $outerItem)
    // 外层循环代码
    @foreach($innerArray as $innerItem)
        // 内层循环代码
    @endforeach
@endforeach

<table>
    <thead>
        <tr>
            <th>学生</th>
            <th>课程</th>
            <th>成绩</th>
        </tr>
    </thead>
    <tbody>
        @foreach($students as $student)
            @foreach($courses as $course)
                <tr>
                    <td>{{ $student->name }}</td>
                    <td>{{ $course->name }}</td>
                    <td>{{ $student->getGrade($course->id) }}</td>
                </tr>
            @endforeach
        @endforeach
    </tbody>
</table>