title: How to filter/customize search module in Prestashop 1.5?
body: <p>I have a prestashop website and I am having the following issue.</p>
  
  <p>My free prestashop search module (by default) it searches and displays results from every category at the same time :
  I have the following categories near the search bar</p>
  
  <ol>
  <li>All categories.</li>
  <li>Food</li>
  <li>Drinks</li>
  <li>Deserts</li>
  </ol>
  
  <p>I want to customize the search so when i click(and select) food , the display results both in ajax search and main query search to be only from the food category and not from Drinks or Deserts.</p>
  
  <p>And I want to keep all categories search through all the categories bellow ! </p>
  
  <p>Might anybody give me some clues on how to do that ?</p>
  
  <p>Thank you !</p>