source: app/Models/Artist.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\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

class Artist extends User
{
    use HasFactory;

    protected $table = 'artists';

    protected $primaryKey = 'user_id';

    public $timestamps = false;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'user_id',
        'city',
        'country',
        'short_description',
        'price_per_hour',
        'instagram_link',
        'soundcloud_link',
        'apple_music_link',
        'youtube_link',
        'spotify_link',
        'manager_id',
        'artist_type_id',
    ];

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

    public function isOnboardingCompleted()
    {
        return !((is_null($this->birth_date) || trim($this->birth_date) === '') ||
            (is_null($this->city) || trim($this->city) === '') ||
            (is_null($this->country) || trim($this->country) === '') ||
            (is_null($this->short_description) || trim($this->short_description) === '') ||
            (self::artist_type()->doesntExist()) ||
            (self::genres()->doesntExist()));
    }

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

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

    public function manager(): BelongsTo
    {
        return $this->belongsTo(Manager::class, 'manager_id', 'user_id');
    }

    public function images(): HasMany
    {
        return $this->hasMany(ArtistImage::class, 'artist_id');
    }

    public function genres(): BelongsToMany
    {
        return $this->belongsToMany(Genre::class, 'artist_sings_genres', 'artist_id');
    }

    public function manager_invites(): HasOne
    {
        return $this->hasOne(ManagerInvite::class, 'user_id', 'artist_id');
    }

    public function offers(): HasMany
    {
        return $this->hasMany(Offer::class, 'artist_id');
    }

    public function reviews(): HasMany
    {
        return $this->hasMany(Review::class, 'artist_id');
    }
}