diff --git a/lib/Alchemy/Phrasea/Controller/Prod/Query.php b/lib/Alchemy/Phrasea/Controller/Prod/Query.php
index 971a086bd1..7b8e6bc675 100644
--- a/lib/Alchemy/Phrasea/Controller/Prod/Query.php
+++ b/lib/Alchemy/Phrasea/Controller/Prod/Query.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\Controller\Prod;
 
 use Alchemy\Phrasea\SearchEngine\SearchEngineOptions;
+use Alchemy\Phrasea\Controller\SearchEngineRequest;
 use Silex\Application;
 use Silex\ControllerProviderInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
@@ -99,89 +100,9 @@ class Query implements ControllerProviderInterface
         $mod = $app['phraseanet.user']->getPrefs('view');
 
         $json = array();
-
-        $options = new SearchEngineOptions();
-        $options->disallowBusinessFields();
-
-        $bas = $app['phraseanet.user']->ACL()->get_granted_base();
-
-        if (is_array($request->request->get('bas'))) {
-            $bas = array_map(function($base_id) use ($app) {
-                    return \collection::get_from_base_id($app, $base_id);
-                }, $request->request->get('bas'));
-        }
-
-        $databoxes = array();
-
-        foreach ($bas as $collection) {
-            if (!isset($databoxes[$collection->get_sbas_id()])) {
-                $databoxes[$collection->get_sbas_id()] = $collection->get_databox();
-            }
-        }
-
-        if ($app['phraseanet.user']->ACL()->has_right('modifyrecord')) {
-            $BF = array_filter($bas, function($collection) use ($app) {
-                    return $app['phraseanet.user']->ACL()->has_right_on_base($collection->get_base_id(), 'canmodifrecord');
-                });
-
-            $options->allowBusinessFieldsOn($BF);
-        }
-
-        $status = is_array($request->request->get('status')) ? $request->request->get('status') : array();
-        $fields = is_array($request->request->get('fields')) ? $request->request->get('fields') : array();
-
-        $databoxFields = array();
-
-        foreach ($databoxes as $databox) {
-            foreach ($fields as $field) {
-                try {
-                    $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
-                } catch (\Exception $e) {
-                    continue;
-                }
-                if ($databoxField) {
-                    $databoxFields[] = $databoxField;
-                }
-            }
-        }
-
-
-        $options->setFields($databoxFields);
-        $options->setStatus($status);
-        $options->onCollections($bas);
-
-        $options->setSearchType($request->request->get('search_type'));
-        $options->setRecordType($request->request->get('recordtype'));
-
-        $min_date = $max_date = null;
-        if ($request->request->get('datemin')) {
-            $min_date = \DateTime::createFromFormat('Y/m/d H:i:s', $request->request->get('datemin') . ' 00:00:00');
-        }
-        if ($request->request->get('datemax')) {
-            $max_date = \DateTime::createFromFormat('Y/m/d H:i:s', $request->request->get('datemax') . ' 23:59:59');
-        }
-
-        $options->setMinDate($min_date);
-        $options->setMaxDate($max_date);
-
-        $databoxDateFields = array();
-
-        foreach ($databoxes as $databox) {
-            foreach (explode('|', $request->request->get('datefield')) as $field) {
-                try {
-                    $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
-                } catch (\Exception $e) {
-                    continue;
-                }
-                if ($databoxField) {
-                    $databoxDateFields[] = $databoxField;
-                }
-            }
-        }
-
-        $options->setDateFields($databoxDateFields);
-        $options->setSort($request->request->get('sort'), $request->request->get('ord', PHRASEA_ORDER_DESC));
-        $options->useStemming($request->request->get('stemme'));
+        
+        $SearchRequest = SearchEngineRequest::fromRequest($app, $request);
+        $options = $SearchRequest->getOptions();
 
         $form = $options->serialize();
 
diff --git a/lib/Alchemy/Phrasea/Controller/SearchEngineRequest.php b/lib/Alchemy/Phrasea/Controller/SearchEngineRequest.php
new file mode 100644
index 0000000000..f9c9277a4d
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Controller/SearchEngineRequest.php
@@ -0,0 +1,119 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Controller;
+
+use Alchemy\Phrasea\Application;
+use Alchemy\Phrasea\SearchEngine\SearchEngineOptions;
+use Symfony\Component\HttpFoundation\Request;
+
+class SearchEngineRequest
+{
+    private $options;
+
+    public function __construct(SearchEngineOptions $options)
+    {
+        $this->options = $options;
+    }
+    
+    public function getOptions()
+    {
+        return $this->options;
+    }
+    
+    public static function fromRequest(Application $app, Request $request)
+    {
+        $options = new SearchEngineOptions();
+        
+        $options->disallowBusinessFields();
+        
+        $bas = $app['phraseanet.user']->ACL()->get_granted_base();
+
+        if (is_array($request->request->get('bases'))) {
+            $bas = array_map(function($base_id) use ($app) {
+                    return \collection::get_from_base_id($app, $base_id);
+                }, $request->request->get('bases'));
+        }
+
+        $databoxes = array();
+
+        foreach ($bas as $collection) {
+            if (!isset($databoxes[$collection->get_sbas_id()])) {
+                $databoxes[$collection->get_sbas_id()] = $collection->get_databox();
+            }
+        }
+
+        if ($app['phraseanet.user']->ACL()->has_right('modifyrecord')) {
+            $BF = array_filter($bas, function($collection) use ($app) {
+                    return $app['phraseanet.user']->ACL()->has_right_on_base($collection->get_base_id(), 'canmodifrecord');
+                });
+
+            $options->allowBusinessFieldsOn($BF);
+        }
+
+        $status = is_array($request->request->get('status')) ? $request->request->get('status') : array();
+        $fields = is_array($request->request->get('fields')) ? $request->request->get('fields') : array();
+
+        $databoxFields = array();
+
+        foreach ($databoxes as $databox) {
+            foreach ($fields as $field) {
+                try {
+                    $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
+                } catch (\Exception $e) {
+                    continue;
+                }
+                if ($databoxField) {
+                    $databoxFields[] = $databoxField;
+                }
+            }
+        }
+
+        $options->setFields($databoxFields);
+        $options->setStatus($status);
+        $options->onCollections($bas);
+
+        $options->setSearchType($request->request->get('search_type'));
+        $options->setRecordType($request->request->get('record_type'));
+
+        $min_date = $max_date = null;
+        if ($request->request->get('date_min')) {
+            $min_date = \DateTime::createFromFormat('Y/m/d H:i:s', $request->request->get('date_min') . ' 00:00:00');
+        }
+        if ($request->request->get('date_max')) {
+            $max_date = \DateTime::createFromFormat('Y/m/d H:i:s', $request->request->get('date_max') . ' 23:59:59');
+        }
+
+        $options->setMinDate($min_date);
+        $options->setMaxDate($max_date);
+
+        $databoxDateFields = array();
+
+        foreach ($databoxes as $databox) {
+            foreach (explode('|', $request->request->get('date_field')) as $field) {
+                try {
+                    $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
+                } catch (\Exception $e) {
+                    continue;
+                }
+                if ($databoxField) {
+                    $databoxDateFields[] = $databoxField;
+                }
+            }
+        }
+
+        $options->setDateFields($databoxDateFields);
+        $options->setSort($request->request->get('sort'), $request->request->get('ord', SearchEngineOptions::SORT_MODE_DESC));
+        $options->useStemming((Boolean) $request->request->get('stemme'));
+
+        return new static($options);
+    }
+}
diff --git a/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php b/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
index d59a5cc83d..8f2d3f8da1 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/SearchEngineOptions.php
@@ -109,7 +109,7 @@ class SearchEngineOptions
      */
     public function setLocale($locale)
     {
-        if (!preg_match('/[a-z]{2,3}/', $locale)) {
+        if ($locale && !preg_match('/[a-z]{2,3}/', $locale)) {
             throw new \InvalidArgumentException('Locale must be a valid i18n code');
         }
 
@@ -501,7 +501,7 @@ class SearchEngineOptions
             throw new \InvalidArgumentException('SearchEngineOptions data are corrupted');
         }
 
-        $options = new SearchEngineOptions();
+        $options = new static();
         $options->disallowBusinessFields();
 
         foreach ($serialized as $key => $value) {
diff --git a/lib/classes/API/V1/adapter.class.php b/lib/classes/API/V1/adapter.class.php
index 266200892e..e5c86a1670 100644
--- a/lib/classes/API/V1/adapter.class.php
+++ b/lib/classes/API/V1/adapter.class.php
@@ -9,11 +9,11 @@
  * file that was distributed with this source code.
  */
 
+use Alchemy\Phrasea\Controller\SearchEngineRequest;
 use Alchemy\Phrasea\Application;
 use Alchemy\Phrasea\Border\File;
 use Alchemy\Phrasea\Border\Attribute\Status;
 use Alchemy\Phrasea\Border\Manager as BorderManager;
-use Alchemy\Phrasea\SearchEngine\SearchEngineOptions;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
@@ -1010,10 +1010,10 @@ class API_V1_adapter extends API_V1_Abstract
         $this->app['phraseanet.SE']->setOptions($options);
         $this->app['phraseanet.SE']->resetCache();
 
-        $search_result = $this->app['phraseanet.SE']->query($params['query'], $params["offset_start"], $perPage);
+        $search_result = $this->app['phraseanet.SE']->query($request->get('query'), $offsetStart, $perPage);
 
         $ret = array(
-            'offset_start'      => $params["offset_start"],
+            'offset_start'      => $offsetStart,
             'per_page'          => $perPage,
             'available_results' => $search_result->available(),
             'total_results'     => $search_result->total(),
diff --git a/lib/classes/phrasea.class.php b/lib/classes/phrasea.class.php
index befe33ab9a..8d9bb7623c 100644
--- a/lib/classes/phrasea.class.php
+++ b/lib/classes/phrasea.class.php
@@ -116,12 +116,12 @@ class phrasea
                 $parm["sel"] = '';
                 $parm["ord"] = null;
                 $parm["search_type"] = 0;
-                $parm["recordtype"] = '';
+                $parm["record_type"] = '';
                 $parm["status"] = array();
                 $parm["fields"] = array();
-                $parm["datemin"] = '';
-                $parm["datemax"] = '';
-                $parm["datefield"] = '';
+                $parm["date_min"] = '';
+                $parm["date_max"] = '';
+                $parm["date_field"] = '';
             }
             if ($context == "client") {
                 $parm["mod"] = $app['phraseanet.user']->getPrefs('client_view');
@@ -133,10 +133,10 @@ class phrasea
                 $parm["opAdv"] = array();
                 $parm["status"] = '';
                 $parm["nba"] = '';
-                $parm["datemin"] = '';
-                $parm["datemax"] = '';
-                $parm["recordtype"] = '';
-                $parm["datefield"] = '';
+                $parm["date_min"] = '';
+                $parm["date_max"] = '';
+                $parm["record_type"] = '';
+                $parm["date_field"] = '';
                 $parm["sort"] = $app['phraseanet.registry']->get('GV_phrasea_sort');
                 $parm["stemme"] = '';
                 $parm["dateminfield"] = array();
diff --git a/templates/web/prod/index.html.twig b/templates/web/prod/index.html.twig
index 3d1a90e988..ae62d0ea36 100644
--- a/templates/web/prod/index.html.twig
+++ b/templates/web/prod/index.html.twig
@@ -25,7 +25,7 @@
                                     onclick="cancelEvent(event);return false;"
                                     onmousedown="infoSbas(this, {{sbas_id}}, false, event); return false;"
                                     id="ck_{{collection["base_id"]}}_{{unique_id}}" type="checkbox"
-                                    name="bas[]" value="{{collection["base_id"]}}" {% if collection["selected"] %}checked="checked"{% endif %} />
+                                    name="bases[]" value="{{collection["base_id"]}}" {% if collection["selected"] %}checked="checked"{% endif %} />
                             </label>
                         </li>
                     {% endfor %}
@@ -308,7 +308,7 @@
                                 {% else %}
                                     <input type="hidden" value="0" name="search_type" />
                                 {% endif %}
-                                <select name="recordtype" id="recordtype_sel" class="input-small">
+                                <select name="record_type" id="recordtype_sel" class="input-small">
                                     <option value="">{% trans 'Tout type' %}</option>
                                     <option value="image">{% trans 'Image' %}</option>
                                     <option value="video">{% trans 'Video' %}</option>
@@ -412,7 +412,7 @@
                                                     <table>
                                                         <tr>
                                                             <td colspan="2">
-                                                                <select name="datefield" class="input-medium">
+                                                                <select name="date_field" class="input-medium">
                                                                     {% for field in app['phraseanet.SE'].getAvailableDateFields() %}
                                                                         <option onchange="checkFilters(true);"
                                                                             class="" value="{{ field }}">{{ field }}</option>
@@ -426,11 +426,11 @@
                                                         <tr>
                                                             <td style="padding-right: 5px;">
                                                                 <span>{% trans 'phraseanet::time:: de' %}</span><br />
-                                                                <input onchange="checkFilters(true);" class="datepicker input-medium" type="text" name="datemin" style="height: 18px;" />
+                                                                <input onchange="checkFilters(true);" class="datepicker input-medium" type="text" name="date_min" style="height: 18px;" />
                                                             </td>
                                                             <td>
                                                                 <span>{% trans 'phraseanet::time:: a' %}</span><br />
-                                                                <input onchange="checkFilters(true);" class="datepicker input-medium" type="text" name="datemax" style="height: 18px;" />
+                                                                <input onchange="checkFilters(true);" class="datepicker input-medium" type="text" name="date_max" style="height: 18px;" />
                                                             </td>
                                                         </tr>
                                                     </table>
diff --git a/templates/web/prod/thesaurus.js b/templates/web/prod/thesaurus.js
index f81d3414d1..7c10c0550b 100644
--- a/templates/web/prod/thesaurus.js
+++ b/templates/web/prod/thesaurus.js
@@ -776,7 +776,7 @@ function CXdblClick(e)
 function doThesSearch(type, sbid, term, field)
 {
   var nck = 0;
-  $('#adv_search input[name="bas[]"]').each(
+  $('#adv_search input[name="bases[]"]').each(
   function(i,n)
   {
       var base_id = $(n).val();
diff --git a/www/client/answer.php b/www/client/answer.php
index 4921c45c3b..c2fea2819f 100644
--- a/www/client/answer.php
+++ b/www/client/answer.php
@@ -9,7 +9,9 @@
  */
 
 use Alchemy\Phrasea\Application;
+use Alchemy\Phrasea\Controller\SearchEngineRequest;
 use Alchemy\Phrasea\SearchEngine\SearchEngineOptions;
+use Symfony\Component\HttpFoundation\Request;
 
 /**
  *
@@ -20,16 +22,17 @@ use Alchemy\Phrasea\SearchEngine\SearchEngineOptions;
 require_once __DIR__ . "/../../lib/bootstrap.php";
 
 $app = new Application();
+$request = Request::createFromGlobals();
 
 if ( ! isset($parm)) {
 
-    $request = http_request::getInstance();
-    $parm = $request->get_parms("mod", "bas"
+    $http_request = http_request::getInstance();
+    $parm = $http_request->get_parms("mod", "bases"
         , "pag"
-        , "qry", "search_type", "recordtype"
-        , "qryAdv", 'opAdv', 'status', 'datemin', 'datemax'
+        , "qry", "search_type", "record_type"
+        , "qryAdv", 'opAdv', 'status', 'date_min', 'date_max'
         , 'dateminfield', 'datemaxfield'
-        , 'datefield'
+        , 'date_field'
         , 'sort'
         , 'stemme'
         , 'infield'
@@ -58,7 +61,7 @@ if ($qry == '')
 $parm['qry'] = $qry;
 
 $qrySbas = array();
-if (is_null($parm['bas'])) {
+if (is_null($parm['bases'])) {
     echo 'vous devez selectionner des collections dans lesquelles chercher';
 
     return;
@@ -80,94 +83,8 @@ $mod_xy = $mod_col * $mod_row;
 
 $tbases = array();
 
-$options = new SearchEngineOptions();
-$options->disallowBusinessFields();
-
-$bas = $app['phraseanet.user']->ACL()->get_granted_base();
-
-if (is_array($parm['bas'])) {
-    $bas = array_map(function($base_id) use ($app) {
-            return \collection::get_from_base_id($app, $base_id);
-        }, $parm['bas']);
-}
-
-$databoxes = array();
-
-foreach ($bas as $collection) {
-    if (!isset($databoxes[$collection->get_sbas_id()])) {
-        $databoxes[$collection->get_sbas_id()] = $collection->get_databox();
-    }
-}
-
-if ($app['phraseanet.user']->ACL()->has_right('modifyrecord')) {
-    $BF = array_filter($bas, function($collection) use ($app) {
-            return $app['phraseanet.user']->ACL()->has_right_on_base($collection->get_base_id(), 'canmodifrecord');
-        });
-
-    $options->allowBusinessFieldsOn($BF);
-}
-
-$status = is_array($parm['status']) ? $parm['status'] : array();
-$fields = is_array($parm['infield']) ? $parm['infield'] : array();
-
-$databoxFields = array();
-
-foreach ($databoxes as $databox) {
-    foreach ($fields as $field) {
-        try {
-            $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
-        } catch (\Exception $e) {
-            continue;
-        }
-        if ($databoxField) {
-            $databoxFields[] = $databoxField;
-        }
-    }
-}
-
-
-$options->setFields($databoxFields);
-$options->setStatus($status);
-$options->onCollections($bas);
-
-$options->setSearchType($parm['search_type']);
-$options->setRecordType($parm['recordtype']);
-
-$min_date = $max_date = null;
-if ($parm['datemin']) {
-    $min_date = \DateTime::createFromFormat('Y/m/d H:i:s', $parm['datemin'] . ' 00:00:00');
-}
-if ($parm['datemax']) {
-    $max_date = \DateTime::createFromFormat('Y/m/d H:i:s', $parm['datemax'] . ' 23:59:59');
-}
-
-$options->setMinDate($min_date);
-$options->setMaxDate($max_date);
-
-
-$databoxDateFields = array();
-
-foreach ($databoxes as $databox) {
-    foreach (explode('|', $parm['datefield']) as $field) {
-        try {
-            $databoxField = $databox->get_meta_structure()->get_element_by_name($field);
-        } catch (\Exception $e) {
-            continue;
-        }
-        if ($databoxField) {
-            $databoxDateFields[] = $databoxField;
-        }
-    }
-}
-
-if ($parm['ord'] === NULL)
-    $parm['ord'] = \searchEngine_options::SORT_MODE_DESC;
-else
-    $parm['ord'] = (int) $parm['ord'];
-
-$options->setDateFields($databoxDateFields);
-$options->setSort($parm['sort'], $parm['ord']);
-$options->useStemming($parm['stemme']);
+$searchRequest = SearchEngineRequest::fromRequest($app, $request);
+$options = $searchRequest->getOptions();
 
 $form = $options->serialize();
 
diff --git a/www/client/index.php b/www/client/index.php
index 4d61154d7d..0d9d4ca019 100644
--- a/www/client/index.php
+++ b/www/client/index.php
@@ -224,7 +224,7 @@ if ($app['phraseanet.registry']->get('GV_client_coll_ckbox') === 'popup') {
                                                             $allbcol[] = $coll->get_base_id();
                                                             $n_allbcol ++;
 
-                                                            echo '<input style="display:none;" checked="checked" type="checkbox" class="basItem checkbox basItem' . $databox->get_sbas_id() . '" name="bas[]" value="' . $coll->get_base_id() . '"  id="basChk' . $coll->get_base_id() . '" />';
+                                                            echo '<input style="display:none;" checked="checked" type="checkbox" class="basItem checkbox basItem' . $databox->get_sbas_id() . '" name="bases[]" value="' . $coll->get_base_id() . '"  id="basChk' . $coll->get_base_id() . '" />';
 
                                                             $options .= '<option value="' . $coll->get_base_id() . '" checked="checked" >' . $coll->get_name() . '</option>';
 
@@ -392,9 +392,9 @@ if ($app['phraseanet.registry']->get('GV_thesaurus')) {
                                 '</td></tr>' .
                                 '<tr><td style="width:50%;">' .
                                 '<input type="hidden" name="dateminfield[]" value="' . $databox->get_sbas_id() . '_' . $f . '">' .
-                                ' <input db="' . $databox->get_sbas_id() . '" onchange="checkFilters();" class="datepicker" type="text" name="datemin[]"></td><td style="width:50%;">' .
+                                ' <input db="' . $databox->get_sbas_id() . '" onchange="checkFilters();" class="datepicker" type="text" name="date_min[]"></td><td style="width:50%;">' .
                                 '<input type="hidden" name="datemaxfield[]" value="' . $databox->get_sbas_id() . '_' . $f . '">' .
-                                ' <input db="' . $databox->get_sbas_id() . '" onchange="checkFilters();" class="datepicker" type="text" name="datemax[]"></td></tr>' .
+                                ' <input db="' . $databox->get_sbas_id() . '" onchange="checkFilters();" class="datepicker" type="text" name="date_max[]"></td></tr>' .
                                 '</table>' .
                                 '</div>';
                         } elseif ($field['type'] != 'date') {
@@ -422,7 +422,7 @@ if ($app['phraseanet.registry']->get('GV_thesaurus')) {
                                                                     ?><div class="basGrp"><?php
                                                             foreach ($user->ACL()->get_granted_base(array(), array($databox->get_sbas_id())) as $coll) {
                                                                 $s = "checked";
-                                                                echo '<div><input type="checkbox" class="checkbox basItem basItem' . $databox->get_sbas_id() . '" ' . $s . ' name="bas[]"  id="basChk' . $coll->get_base_id() . '" value="' . $coll->get_base_id() . '"><label for="basChk' . $coll->get_base_id() . '">' . $coll->get_name() . '</label></div>';
+                                                                echo '<div><input type="checkbox" class="checkbox basItem basItem' . $databox->get_sbas_id() . '" ' . $s . ' name="bases[]"  id="basChk' . $coll->get_base_id() . '" value="' . $coll->get_base_id() . '"><label for="basChk' . $coll->get_base_id() . '">' . $coll->get_name() . '</label></div>';
                                                             }
                                                                     ?></div><?php
                                                             if ($app['phraseanet.registry']->get('GV_view_bas_and_coll'))
diff --git a/www/prod/page0.js b/www/prod/page0.js
index e16a480eb7..ed93cf0892 100644
--- a/www/prod/page0.js
+++ b/www/prod/page0.js
@@ -265,9 +265,9 @@ function checkFilters(save)
         $('.status_filter', adv_box) .addClass('danger');
     });
 
-    search.dates.minbound 	= $('.date_filter input[name=datemin]', adv_box).val();
-    search.dates.maxbound 	= $('.date_filter input[name=datemax]', adv_box).val();
-    search.dates.field 		= $('.date_filter select[name=datefield]', adv_box).val();
+    search.dates.minbound 	= $('.date_filter input[name=date_min]', adv_box).val();
+    search.dates.maxbound 	= $('.date_filter input[name=date_max]', adv_box).val();
+    search.dates.field 		= $('.date_filter select[name=date_field]', adv_box).val();
 
     if($.trim(search.dates.minbound) || $.trim(search.dates.maxbound))
     {