Soap/app/Models/CustomerReturn.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class CustomerReturn extends Model
{
    protected $connection = 'mysql_app';
    protected $table='customer_return';
    public function applydetail(){
        return $this->hasMany(CustomerReturnDetail::class,'customer_id','id');
    }

    public function user(){
        return $this->hasOne(User::class,'id','user_id');
    }
}