gistfile1.php

 <?php

   public function indexAction($page)
    {
            $request = $this->container->get('request');
            $routeName = $request->get('_route');            

            $f_r = $request->query->get('f_r'); 

            

            $query = new \Elastica\Query\MatchAll();

            $my_facets = array();

            $elasticaQuery = new \Elastica\Query();
            $elasticaQuery->setQuery($query);
            //$elasticaQuery->setSize(550);

            // facet region
            $elasticaFacet = new \Elastica\Facet\Terms('region');
            $elasticaFacet->setField('region');
            $elasticaFacet->setSize(60);
            // Allow to control the ordering of the terms facets, to be ordered by count, term, reverse_count or reverse_term. The default is count
            $elasticaFacet->setOrder('term');

            $elasticaQuery->addFacet($elasticaFacet);
            $my_facets[] = $elasticaFacet;
            

            // facet appellation
            $elasticaFacet2 = new \Elastica\Facet\Terms('appellation');
            $elasticaFacet2->setField('appellation');
            $elasticaFacet2->setSize(560);
            $elasticaFacet2->setOrder('term');

            $elasticaQuery->addFacet($elasticaFacet2);   
            $my_facets[] = $elasticaFacet;  

            // If there is a Facet Query string, apply it on the query BEFORE the search.
            if ($f_r) {
              $filters = $this->getFacetsFilters($f_r, $my_facets);
        
              if ($filters) {
                $elasticaQuery->setQuery(new Filtered($query, $filters));
              }
            }
            
            // ResultSet
            $elasticaResultSet = $search->search($elasticaQuery);
            
            
             
            return $this->container->get('templating')->renderResponse('ApplicationGhvVinsBundle:Default:index.html.twig', array(
                    'entities' => $entities,
                    'pager' => $pagerfanta,
                    'regions' => $results,
                    'appellations' => $results2
            ));
    }
    
    
    
    // The function I have published here: https://gist.github.com/damienalexandre/5661320
    
    
  /**
   * Return query Filter from a list of query string & allowed Facets
   *
   * @param array   $query            The user query (facet_name => query, facet_name => query...)
   * @param array   $allowed_facets   An array of Elastica\Facet
   *
   * @return \Elastica\Filter\AbstractFilter (if multiple filters, they are combined in BoolAnd filter)
   */
  private function getFacetsFilters($query, $allowed_facets)
  {
    $filters = array();
    if (!is_array($query)) {
      return false;
    }
 
    if (!$allowed_facets || !is_array($allowed_facets) || empty($allowed_facets)) {
      return false;
    }
 
    foreach ($query as $facet_name => $term)
    {
      $facet = false;
      foreach ($allowed_facets as $allowed_facet) {
        if ($allowed_facet->getName() === $facet_name) {
          $facet = $allowed_facet; break;
        }
      }
 
      if ($facet instanceof AbstractFacet) {
        switch (get_class($facet))
        {
          case 'Elastica\Facet\Terms':
            $filters[] = new \Elastica\Filter\Terms($facet->getParam('field'), array($term));
            break;
          case 'Elastica\Facet\Range':
            $ranges = $facet->getParam('ranges');
            if (isset($ranges[(int) $term])) {
              $filters[] = new \Elastica\Filter\NumericRange($facet->getParam('field'), $ranges[(int) $term]);
            }
            break;
          case 'Elastica\Facet\Filter':
            $facet_filters = $facet->toArray();
            if (isset($facet_filters['filter']['exists'])) {
              $filters[] = new \Elastica\Filter\Exists($facet_filters['filter']['exists']['field']);
            } else {
              throw new \Exception(sprintf('The "%s" facet query filter cant be set', $facet_name));
            }
            break;
          default:
            throw new \Exception(sprintf('The "%s" facet query filter is not implemented!!', $facet_name));
        }
      }
    }
 
    if (count($filters) > 1) {
      $and = new \Elastica\Filter\BoolAnd();
 
      foreach ($filters as $filter) {
        $and->addFilter($filter);
      }
 
      return $and;
    } elseif (count($filters) === 1) {
      return $filters[0];
    } else {
      return false;
    }
  }