InvoiceShelf/app/Models/CustomFieldValue.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\MorphTo;

class CustomFieldValue extends Model
{
    use HasFactory;

    protected $dates = [
        'date_answer',
        'date_time_answer',
    ];

    protected $guarded = [
        'id',
    ];

    protected $appends = [
        'defaultAnswer',
    ];

    public function setTimeAnswerAttribute($value)
    {
        if ($value && $value != null) {
            $this->attributes['time_answer'] = date('H:i:s', strtotime($value));
        } else {
            $this->attributes['time_answer'] = null;
        }
    }

    public function getDefaultAnswerAttribute()
    {
        $value_type = getCustomFieldValueKey($this->type);

        return $this->$value_type;
    }

    public function company(): BelongsTo
    {
        return $this->belongsTo(Company::class);
    }

    public function customField(): BelongsTo
    {
        return $this->belongsTo(CustomField::class);
    }

    public function customFieldValuable(): MorphTo
    {
        return $this->morphTo();
    }
}