Sindbad~EG File Manager

<?php

namespace App\Imports;

use App\Models\Asignacion;
use Maatwebsite\Excel\Concerns\ToModel;
use Maatwebsite\Excel\Concerns\WithHeadingRow;
use DateTime;

class AsignacionImport implements ToModel
{
    /**
    * @param array $row
    *
    * @return \Illuminate\Database\Eloquent\Model|null
    */

    protected $id;

    function __construct($id) {
        $this->id = $id;
    }

    public function model(array $row){
        if (isset($row[3])) {
            return new Asignacion([
                'evaluador_id'     => $row[0],
                'evaluado_id'    => $row[1],
                'evaluacion_id' => $row[2],
                'asi_fecha_limite' => $row[3],
                'empresa_id'  => $this->id
            ]);
        }else{
            return new Asignacion([
                'evaluador_id'     => $row[0],
                'evaluado_id'    => $row[1],
                'evaluacion_id' => $row[2],
                'empresa_id'  => $this->id
            ]);
        }
    }
}