title: how to make multiple products apear as a single one in opencart
body: <p>hi there i was writing a module for opencart that let's the user chose from some </p>
  
  <p>products(mother board, graphical card, processor ...)</p>
  
  <p>in a wizard style that for every choice i retreive the "id" of the selected product </p>
  
  <p>but calling a </p>
  
  <pre><code> addtocart(id);
  </code></pre>
  
  <p>for every product will make them apear as a list of products</p>
  
  <p>but i want to make them added to the cart as a single product called </p>
  
  <p>"costimized pc"</p>
  
  <p>and make the order treat them as a single product as well </p>
  
  <p>any idea about how or where should i start are welcome</p>