使用Eloquent构建跨越四个或更多表的关系

Question

这是一个架构：

users: id

schools: id | district_id

school_users: id | school_id | user_id

districts: id

如何在Eloquent中建立关系以返回$ district-＆gt;用户？

class District
{
    public function users()
    {
        //something that mirrors this functionality
        return $this->hasManyThroughThrough("User","SchoolUser","School");
    }
}

Answer 1

你应该跨越两种关系：

class District
{
    public function users()
    {
        return $this->hasMany('School');
    }
}

class School
{
    public function users()
    {
        return $this->belongsToMany('User');
    }
}

class User
{
}

$books = District::with('schools.users')->get();