sipadu_mbip/app/Model/Module/Investigation.php

<?php

namespace App\Model\Module;

use Jenssegers\Mongodb\Eloquent\Model as Eloquent;
use Jenssegers\Mongodb\Eloquent\SoftDeletes;

class Investigation extends Eloquent
{
    //
    use SoftDeletes;

	protected $connection = 'mongodb';
    protected $collection = 'investigation';
	
	protected $guarded = ['_id'];

    public function confidentialfile()
    {
        return $this->belongsTo('App\Model\Module\ConfidentialFile');
    }

     public function attachment(){
        return $this->hasMany('App\Model\Module\Attachment');
    }
}