filament_inventory/app/Filament/Widgets/PopularCategoryChart.php

<?php

namespace App\Filament\Widgets;

use Filament\Widgets\ChartWidget;
use App\Models\Reserveditem;
use App\Models\Category;


class PopularCategoryChart extends ChartWidget
{
    protected static ?string $heading = 'Game reservations by category';
    protected static ?string $maxHeight = '275px';

    protected static ?array $options = [
        'scales' => [
            'x' => [
                'display' => false,
            ],
            'y' => [
                'display' => false,
            ],
        ],
    ];

    protected function getData(): array
    {
        $categories = Category::where('type', 'game')->get();
        $categoryNames = [];
        
        foreach ($categories as $obj){
            $categoryNames[] = $obj->name;
        }

        $items = Reserveditem::withTrashed()->with('item')->whereHas('item', function($query){
            return $query->where('type', 'game');
        })->get()->groupBy('item.category_id');


        $itemCategoriesCount = [];

        foreach ($items as $item){
           
                $itemCategoriesCount[] = $item->count();
            
        }
                
        return [
            'datasets' => [
                [
                    'label' => __('Reservation Category'),
                    'data' => $itemCategoriesCount,
                    'backgroundColor' => ["#03045e","#0077b6","#00b4d8","#90e0ef","#caf0f8"],
                    "hoverOffset" => 4,
                ],
            ],
            'labels' => $categoryNames,
            
        ];
    }

    protected function getType(): string
    {
        return 'pie';
    }
}