How to make model feedback on itself in Eloquent Laravel?

Question

MySQL

You need to implement category exclusion. That is, to one category, others are indicated that are considered mutually exclusive.
In the Category model, I made a link

Category {

public function excludes()
    {
        return $this->belongsToMany(Category::class, 'excludes_cetegories', 'category_id', 'exclude_id');
    }

}

But you can't get feedback. That is,
Milk excludes Vegetables and Fruits, but Vegetables and Fruits do not have this exception. Do I have to duplicate records or is there a way to do everything on one record?

Answer 1

make the second method (think of a name)
public function excludes2()
{
return $this->belongsToMany(Category::class, 'excludes_cetegories', 'exclude_id', 'category_id');
}