qds/app/Models/StickerStructureDetail.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\SoftDeletes;

class StickerStructureDetail extends Model
{

    use SoftDeletes;

    protected $fillable = [
        'plant_id',
        'item_characteristic_id',
        'sticker_id',
        'sticker_width',
        'sticker_height',
        'sticker_lmargin',
        'sticker_rmargin',
        'sticker_tmargin',
        'sticker_bmargin',
        'created_at',
        'updated_at',
        'created_by',
        'updated_by'
    ];

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

    public function itemCharacteristic(): BelongsTo
    {
        return $this->belongsTo(ItemCharacteristic::class, 'item_characteristic_id');
    }

    public function item(): BelongsTo
    {
        return $this->belongsTo(Item::class, 'item_id');
    }

}