# Eloquent: Grouping and Sorting

# Grouping by related models

To group results by related models, you can use the groupBy method. This method allows you to group results by a specific column or relationship. In this example, we group courses by their associated modules:

$course = Course::select('id', 'title', 'slug')
    ->with([
        'modules:id,course_id,title',
        'modules.lessons:id,module_id,title'
    ])->find($courseId);