Controller HABTM variables not loading in view - cakephp-3.7

Question

I have two related models in a HasAndBelongsToMany association: Subcategoria has many Paquetes, Paquete has many Subcategorias.
In my subcategory page I need to load the related paquetes, and according to my debug-kit toolbar the variables are being loaded correctly. The problem is the view is showing me an "undefined property" error code. I'm sure I'm missing something, but I can't quite get what's the problem.
My models:
class SubcategoriasTable extends Table
{
public function initialize(array $config)
{
parent::initialize($config);
$this->setTable('subcategorias');
$this->setDisplayField('title');
$this->setPrimaryKey('id');
$this->addBehavior('Timestamp');
$this->belongsTo('Categorias', [
'foreignKey' => 'categoria_id',
'joinType' => 'INNER'
]);
$this->belongsToMany('Paquetes');
}
}
class PaquetesTable extends Table
{
public function initialize(array $config)
{
parent::initialize($config);
$this->setTable('paquetes');
$this->setDisplayField('name');
$this->setPrimaryKey('id');
$this->addBehavior('Timestamp');
$this->belongsToMany('Subcategorias', [
'foreignKey' => 'paquete_id',
'targetForeignKey' => 'subcategoria_id',
'joinTable' => 'paquetes_subcategorias',
'dependant' => false
]);
}
}
The controller I'm having troubles with:
namespace App\Controller;
use App\Controller\AppController;
use Cake\ORM\Query;
class SubcategoriasController extends AppController
{
public function content($slug = null)
{
$subcategory = $this->Subcategorias
->findBySlug($slug)
->select(['title', 'id'])
->contain('Paquetes', function (Query $q) {
return $q
->select(['name', 'slug','cost','currency'])
->where(['Paquetes.status' => true]);
});
$this->set(compact('subcategory',$subcategory));
}
}
The corresponging view template (content.ctp):
<?php
$subcategoryName = $subcategory->title;
$title = $subcategoryName;
$this->assign('title', $title);
?>
<h1><?= $title ?></h1>
<?php foreach($subcategory->paquetes as $paquete) : ?>
<!-- Each Paquete's loaded fields. -->
<?php endforeach; ?>
So far I'm getting the following error message:
Notice (8): Undefined property: Cake\ORM\Query::$title [APP/Template\Subcategorias\content.ctp, line 2]

Answer 1

You never call first() or firstOrFail() on the query you built, so in your view $subcategory is still just a Query object, not an Entity.
You probably meant:
$subcategory = $this->Subcategorias
->findBySlug($slug)
->select(['title', 'id'])
->contain('Paquetes', function (Query $q) {
return $q
->select(['name', 'slug','cost','currency'])
->where(['Paquetes.status' => true]);
})
->firstOrFail(); // This is the line that fetches the result and marshals it into an Subcategorias Entity