suivicpt/app/Models/Category.php

<?php

declare(strict_types=1);

namespace App\Models;

use App\Enums\CategoryType;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Category extends Model
{
    protected $fillable = ['household_id', 'name', 'type', 'position'];

    protected function casts(): array
    {
        return [
            'type' => CategoryType::class,
        ];
    }

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

    public function budgetLines(): HasMany
    {
        return $this->hasMany(BudgetLine::class);
    }

    public function transactions(): HasMany
    {
        return $this->hasMany(Transaction::class);
    }

    public function scopeOfType(Builder $query, CategoryType $type): Builder
    {
        return $query->where('type', $type);
    }
}