Relation one to many it doesn't work - php

Question

https://imgur.com/a/ob9rjIz
There are two tables one called user and another called user_relation_user
My relation is an user to many user_relation_user and in my migration. I want to create 10 user with php artisan tinker so i run factory(App\User::class, 10)->create(); at the end i access to my database so do select * from users there are 10 users but in user_relation_user isn't 10 id or it's empty
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Administrator extends Model
{
protected $table = 'user_relation_user';
protected $primaryKey = 'id';
protected $fillable = ['user_id'];
public function users(){
return $this->belongsTo(User::class,'user_id');
}
}
<?php
namespace App;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'name', 'email', 'password',
];
/**
* The attributes that should be hidden for arrays.
*
* #var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function administrator(){
return $this->hasMany(Administrator::class,'user_id');
}
}
//hasMany
My migration
<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUserRelationUserTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('user_relation_user', function (Blueprint $table) {
$table->increments('id');
$table->integer('user_id')->unsigned();
$table->integer('user_id_admin')->unsigned();
$table->timestamps();
$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
});
}
/**
* Reverse the migrations.
*foreign
* #return void
*/
public function down()
{
Schema::dropIfExists('user_relation_user');
}
}

Answer 1

The relation you define is correct,you just need to define a relation in user model as well.
Example:
Suppose you are developing a blog system where user can post blogs.
then there will be two models user model and blog model
In User model you have to define user relation as below:
public function blogs()
{
return $this->hasmany(Blog::class);
}
Then in blogs model
public function users()
{
return $this->belongsTo(User::class);
}