mikeisdeving/app/Models/Post.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;

class Post extends Model
{
    protected $fillable = [
        'title',
        'slug',
        'excerpt',
        'body',
        'cover_image',
        'tags',
        'published_at',
    ];

    protected $casts = [
        'tags' => 'array',
        'published_at' => 'datetime',
    ];

    protected static function booted(): void
    {
        static::saving(function (Post $post) {
            if (blank($post->slug)) {
                $post->slug = Str::slug($post->title);
            }
        });
    }

    public function scopePublished(Builder $query): Builder
    {
        return $query->whereNotNull('published_at')->where('published_at', '<=', now());
    }

    public function getRouteKeyName(): string
    {
        return 'slug';
    }

    protected function coverImageUrl(): Attribute
    {
        return Attribute::get(fn () => $this->cover_image ? Storage::disk('public')->url($this->cover_image) : null);
    }
}