// app/Models/User.php
class User extends Model
{
    public function posts()
    {
        return $this->hasMany(Post::class);
    }
}

// app/Models/Post.php
class Post extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

// In a controller or service
// Load users and their published posts, ordered by creation date
$users = User::with(['posts' => function ($query) {
    $query->where('published', true)->orderBy('created_at', 'desc');
}])->get();

foreach ($users as $user) {
    echo $user->name . ":
";
    foreach ($user->posts as $post) {
        echo "- " . $post->title . "
";
    }
}

// Or eager loading multiple relationships with conditions
$orders = Order::with([
    'customer',
    'items' => function ($query) {
        $query->where('quantity', '>', 0);
    },
    'payments' => function ($query) {
        $query->where('status', 'completed');
    }
])->get();