Post.php

<?php /** @noinspection PhpUnused */

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\HasMany;

class Post extends Model
{
    use HasFactory;

    protected $with = ['category', 'author'];

    public const DEFAULT_POST_THUMBNAIL_URL = 'post/default.jpg';

    public function scopeFilter($query, array $filters)
    {
        $query->when($filters['search'] ?? false, fn($query, $search) =>
            $query->where(fn($query) =>
                $query->where('title', 'like', '%' . $search . '%')
                    ->orWhere('body', 'like', '%' . $search . '%')
            )
        );

        $query->when($filters['category'] ?? false, fn($query, $category) =>
            $query->whereHas('category', fn ($query) =>
                $query->where('slug', $category)
            )
        );

        $query->when($filters['author'] ?? false, fn($query, $author) =>
            $query->whereHas('author', fn ($query) =>
                $query->where('username', $author)
            )
        );
    }

    public function getThumbnailUrl(): string
    {
        if ($thumbnailPath = $this->getAttribute('thumbnail')) {
            return "/storage/$thumbnailPath";
        }

        return asset('images') . '/' . self::DEFAULT_POST_THUMBNAIL_URL;
    }

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

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

    public function author(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id');
    }
}