source: app/Models/Offer.php

<?php

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;
use Illuminate\Database\Eloquent\Relations\HasOne;

class Offer extends Model
{
    use HasFactory;

    protected $table = 'offers';

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'slug',
        'payment_type',
        'status',
        'artist_id',
        'event_id',
    ];

    /**
     * The attributes that are not mass assignable.
     * @var string[]
     */
    protected $guarded = [
        'price',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'completed_at' => 'datetime',
    ];

    public function artist(): BelongsTo
    {
        return $this->belongsTo(Artist::class, 'artist_id');
    }

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

    public function comments(): HasMany
    {
        return $this->hasMany(OfferComment::class)->orderBy('created_at', 'desc');
    }

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