gistfile1.php

<?
	public function view($category = null ,$slug = null) {
		
		if (! $slug) {
			$this->Flash->success ( 'Invalid id for Product' );
			$this->redirect ( '/products' );
		}
		
		$query = $this->Products->find()->where(
				[
						'slug =' => $slug, 
						'category_id =' => $category
				])
				->first();
		
			
		debug($category);
		debug($query);
		
		if ($query == null) {
			$this->Flash->success ( 'Product doesnt exist' );
			$this->redirect ( '/products' );
		}
		
		$this->set ('product', $query);
		$this->set ('_serialize', ['product']);
	}
	
	---
	
	// routes.php
	
		$routes->connect('/:category/:slug',
			['controller' => 'Products', 'action' => 'view'],
			['pass' => ['category', 'slug']]
			);