To many via laravel eloquent - how to make a tricky request?

Question

Laravel

Hello.
There are 3 tables - doctors, clients, ClientCourse, as a connection between a client and a certain course in the system.

*client_course*
id
name
doctor_id
client_id

That is, the doctor is assigned to a specific course, and is not assigned to the client.
How to connect the link so that inside the doctor model you can hook all the clients assigned to the courses?
I tried like this

public function clients()
    {
      return $this->hasManyThrough('App\Client', 'App\ClientCourse');
    }

what did you get

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'clients.client_course_id' in 'on clause' (SQL: select `clients`.*, `client_course`.`doctor_id` as `laravel_through_key` from `clients` inner join `client_course` on `client_course`.`id` = `clients`.`client_course_id` where `client_course`.`doctor_id` = 1)

What am I doing wrong?..

Answer 1

on `client_course`.`id` = `clients`.`client_course_id`
You obviously made a mistake here.
public function clients()
{
return $this->hasManyThrough('App\Client', 'App\ClientCourse');
}
You have a many-to-many relationship, just hasMany(Client::class)

Answer 2

Choice:

public function clients()
{
    return $this->hasManyThrough(
        Client::class, 
        ClientCourse::class,
        'doctor_id',
        'id',
        'id',
        'client_id'
    );
}

public function clients()
{
    return $this->belongsToMany(Client::class, 'client_courses');
}