c-cms-legacy/app/Schedule.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use App\Item;

class Schedule extends Model
{
    protected $casts = [
        'data' => 'array',
    ];

    public function getInventory($periode)
    {
        $dispo = [];
        $used = [];
        $dispo_item = collect();

        $string_periode = 'p'.$periode;

        $inventory = Item::all();

        foreach ($inventory as $item) {
            array_push($dispo, $item->id);
        }

        $n1 = 'n1_'.$string_periode.'_item';
        $items_array = explode("-",$this->$n1);

        foreach ($items_array as $item_array) {
            array_push($used,$item_array);
        }

        $n2 = 'n2_'.$string_periode.'_item';
        $items_array = explode("-",$this->$n2);

        foreach ($items_array as $item_array) {
            array_push($used,$item_array);
        }

        $n3 = 'n3_'.$string_periode.'_item';
        $items_array = explode("-",$this->$n3);

        foreach ($items_array as $item_array) {
            array_push($used,$item_array);
        }

        $dispo = array_diff($dispo,$used);

        foreach ($dispo as $key) {
            $dispo_item->push(Item::find($key));
        }

        return $dispo_item;
    }
}