Laravel Nova Search Subtitle

Question

In my Nova Resource ...

class Person extends Resource

... I have this subtitle() method (which is part of a Nova Resource Class):

public function subtitle()
{
    return $this->address->city;
}

Person Model:

class Person extends Model
{
    public function addresses()
    {
        return $this->hasMany('App\Address');
    }
}

Address Model:

class Address extends Model
{
    public function person()
    {
        return $this->belongsTo('App\Person');
    }
}

$this->address->city returns NULL, why?

Of course the column "city" exits in the addresses table and there are data in the database tables, also related data.

Answer 1

Solution:

public function subtitle()
{
    return $this->addresses->first()->city;
}