diff --git a/routeSQL.php b/routeSQL.php
index b139839..ad6083d 100644
--- a/routeSQL.php
+++ b/routeSQL.php
@@ -42,6 +42,18 @@ class routeSQL
   public $path = "";
   /** Authentication */
   public $auth = array ("email"=>"anonymous");
+  /** Authorization object. Should allow a method named 
+      "allow ($module, $user, $object)" which return 
+      - NO if the object is not defined
+      - RO if the object is in read-only mode
+      - RW if the object is in read-write mode */
+  public $authorization = null;
+  /** Module name for authorization */
+  public $module = null;
+  /** Chain multiple routeSQL. Wait for an routeSQL object */
+  public $chained = null;
+  /** Chain multiple routeSQL. Wait for the foreign key */
+  public $chainedForeign = null;
   /** The model file containing the database description */
   private $model_file = "";
   /** The model class included in the model file */
@@ -60,6 +72,8 @@ class routeSQL
   private $password = null;
   /** The Options to the PDO driver if needed */
   private $driver_options = null;
+  /** The Datas are protected in read-only */
+  private $readwriteAllowed = true;
 
   /** Connect to the database */
   public function __construct ($model_file, $model_class, $url_prefix, $dsn,
@@ -128,6 +142,7 @@ class routeSQL
   {
     // The maximum of links available in the paginator
     $maxClickPaginator = 10;
+    $route = new route ();
     $prePage = false;
     $postPage = false;
     $content = "    <div class='paginatorArea'>\n";
@@ -149,7 +164,7 @@ class routeSQL
         continue;
       }
       $displayedNumbers++;
-      $content .= "      <a href='".$this->url_prefix.
+      $content .= "      <a href='".$route->baseURL().$this->url_prefix.
                   "?page=$i&amp;num=$num&amp;search=".urlencode ($search)."'";
       if ($page == $i)
         $content .= " class='selected'";
@@ -158,7 +173,7 @@ class routeSQL
     if ($displayedNumbers === 0)
     {
       $i = 1;
-      $content .= "      <a href='".$this->url_prefix.
+      $content .= "      <a href='".$route->baseURL().$this->url_prefix.
                   "?page=$i&amp;num=$num&amp;search=".urlencode($search)."'";
       if ($page == $i)
         $content .= " class='selected'";
@@ -174,7 +189,7 @@ class routeSQL
   private function addNewArea ($nbentries, $page, $num, $search)
   {
     $content = "";
-    if ($this->displayActions)
+    if ($this->displayActions && $this->readwriteAllowed)
     {
       $route = new route ();
       $content .= "    <div class='actionExtern'>\n";
@@ -249,8 +264,18 @@ class routeSQL
   /** Create the routes and the associated actions */
   public function routesHTML ()
   {
+    // If chained routeSQL, the url_prefix must be adapted
+    if ($this->chained !== null)
+    {
+      if (strpos ($this->chained->url_prefix, "/{chain}/") !== false)
+        throw new Exception ("Chained can not have an already chained object",
+                             500); 
+      $this->url_prefix = $this->chained->url_prefix."/{chain}/".
+                          $this->url_prefix;
+    }
 	  /** Add HTML routes */
 	  $route = new route ();
+    $route->allowSlashes=false;
 	  $route->get ($this->url_prefix."/", function () use ($route)
     {
       $route->redirect ("/".$this->url_prefix, "");
@@ -258,9 +283,16 @@ class routeSQL
 
 	  $route->get ($this->url_prefix.
                  "(\?({p1}=({v1})?)(&{p2}=({v2})?(&{p3}=({v3})?)?)?)?",
-      function ($p1, $v1, $p2, $v2, $p3, $v3) use ($route)
+      function ($p1, $v1, $p2, $v2, $p3, $v3, $chain) use ($route)
 	  {
 	    // List all the objects of the table
+      if ($this->chained !== null &&
+          $this->chained->accessright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright () !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
@@ -268,6 +300,10 @@ class routeSQL
         throw new Exception (_("Access forbidden"), 403);
       }
 
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== true)
+        $this->readwriteAllowed = false;
+
       // num is the number of elements displayed by page
       // page is the page to display
       // Allow the parameters to be sent in any order
@@ -292,6 +328,7 @@ class routeSQL
       setcookie ("page", $page, time()+3600*24*30, $this->path);
       setcookie ("num", $num, time()+3600*24*30, $this->path);
       setcookie ("search", $search, time()+3600*24*30, $this->path);
+      $this->url_prefix = str_replace ("{chain}", $chain, $this->url_prefix);
       //echo "PAGE=$page\n";
       //echo "NUM=$num\n";
       //echo "SEARCH=$search\n";
@@ -300,8 +337,13 @@ class routeSQL
       $csrf = new csrf ();
       $token = $csrf->createToken ();
       $titles = $this->objectDB->titles ();
+      unset ($titles[$this->chainedForeign]);
+      $foreignSelect = null;
+      if ($this->chained !== null)
+        $foreignSelect = array (array ($this->chainedForeign, $chain));
       if ($search === "")
-        $datas = $this->objectDB->read ();
+        $datas = $this->objectDB->read (null, array_keys($titles), null, null,
+                                        $foreignSelect);
       else
       {
         $criteria = array ();
@@ -318,7 +360,8 @@ class routeSQL
             $s = "$s%";
           $criteria[] = array ($column, "$s", "LIKE");
         }
-        $datas = $this->objectDB->read ($criteria, null, null, true);
+        $datas = $this->objectDB->read ($criteria, array_keys ($titles), null,
+                                        true, $foreignSelect);
       }
       $nbentries = count ($datas);
       if ($num > 1000)
@@ -390,11 +433,13 @@ class routeSQL
       $content .= "  <table>\n";
       $content .= "    <thead>\n";
       $content .= "      <tr>\n";
-      if ($this->displayActions && $this->actionsAtEnd === false)
+      if ($this->readwriteAllowed && $this->displayActions &&
+          $this->actionsAtEnd === false)
         $content .= "        <th>".dgettext("domframework","Actions")."</th>\n";
       foreach ($titles as $title)
         $content .= "        <th>".htmlentities ($title)."</th>\n";
-      if ($this->displayActions && $this->actionsAtEnd !== false)
+      if ($this->readwriteAllowed && $this->displayActions &&
+          $this->actionsAtEnd !== false)
         $content .= "        <th>".dgettext("domframework","Actions")."</th>\n";
       $content .= "      </tr>\n";
       $content .= "    </thead>\n";
@@ -403,7 +448,7 @@ class routeSQL
       {
         // Add one column more for actions
         $countTitles = count($titles);
-        if ($this->displayActions)
+        if ($this->readwriteAllowed && $this->displayActions)
           $countTitles++;
         $content .= "      <tr><td colspan='$countTitles' class='noentry'>";
         $content .= dgettext("domframework","No entry available");
@@ -428,7 +473,7 @@ class routeSQL
             foreach ($line as $col)
               $content .= "<td>".htmlentities ($col)."</td>";
           }
-          if ($this->displayActions)
+          if ($this->readwriteAllowed && $this->displayActions)
           {
             $content .= "<td class='action'>";
             $content .= "  <a href='".$route->baseURL().$this->url_prefix."/".
@@ -475,9 +520,16 @@ echo $content;
 	  });
 
 	  $route->get ($this->url_prefix."/{id}/delete/{token}",
-                 function ($id, $token)
+                 function ($id, $token, $chain)
 	  {
 	    // Delete an existing object if the token is valid
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright ($id) !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
@@ -512,9 +564,16 @@ echo $content;
 
 	  });
 
-	  $route->get ($this->url_prefix."/add", function () 
+	  $route->get ($this->url_prefix."/add", function ($chain) 
 	  {
       // Add a new entry : form to be filled by the user
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright () !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
@@ -567,6 +626,7 @@ echo $content;
         $content .= ".form-control { display: block; border-radius: 4px;padding-top: 6px; padding-right: 12px; padding-bottom: 6px; padding-left: 12px; width: 80%; }\n";
         $content .= "* { box-sizing: border-box;}\n";
         $content .= "button, input, optgroup, select, textarea { margin:0px 0px 0px 0px; }\n";
+        $content .= "#form .form-control[disabled], #form .form-control[readonly], #form fieldset[disabled] .form-control { cursor: not-allowed; background-color: #eee; opacity: 1; }\n";
         $content .= "</style>\n";
         // CSS is in edit an id too !
       }
@@ -598,9 +658,16 @@ echo $content;
 echo $content;
 	  });
 
-	  $route->post ($this->url_prefix."/add", function () use ($route) 
+	  $route->post ($this->url_prefix."/add", function ($chain) use ($route) 
 	  {
       // Add a new entry : effective save of the datas
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright () !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
@@ -649,16 +716,27 @@ echo $content;
 
 	  });
 
-	  $route->get ($this->url_prefix."/{id}", function ($id)
+	  $route->get ($this->url_prefix."/{id}", function ($id, $chain)
 	  {
       // List the details of one existing object
+      if ($this->chained !== null &&
+          $this->chained->accessright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright ($id) !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
           throw new Exception (_("Anonymous not allowed"), 401);
         throw new Exception (_("Access forbidden"), 403);
       }
-      $editright = $this->editright ($id);
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== true)
+        $this->readwriteAllowed = false;
+      if ($this->readwriteAllowed === true)
+        $this->readwriteAllowed = $this->editright ($id);
       $readonly = $this->readonly ($id);
 
 	    $this->connect();
@@ -703,6 +781,7 @@ echo $content;
         $content .= ".form-control { display: block; border-radius: 4px;padding-top: 6px; padding-right: 12px; padding-bottom: 6px; padding-left: 12px; width: 80%; }\n";
         $content .= "* { box-sizing: border-box;}\n";
         $content .= "button, input, optgroup, select, textarea { margin:0px 0px 0px 0px; }\n";
+        $content .= "#form .form-control[disabled], #form .form-control[readonly], #form fieldset[disabled] .form-control { cursor: not-allowed; background-color: #eee; opacity: 1; }\n";
         $content .= "</style>\n";
         // CSS is in add too !
       }
@@ -720,13 +799,13 @@ echo $content;
           $field->mandatory = true;
         if (in_array ("autoincrement", $this->objectDB->fields[$key]))
           $field->type = "hidden";
-        if ($readonly === true || $editright === false)
+        if ($readonly === true || $this->readwriteAllowed === false)
           $field->readonly = true;
         $fields[] = $field;
         unset ($field);
       }
 
-      if ($readonly === false && $editright === true)
+      if ($readonly === false && $this->readwriteAllowed === true)
       {
         $field = new formfield ("submit", _("Save the datas"));
         $field->defaults = _("Save the datas");
@@ -739,9 +818,16 @@ echo $content;
 echo $content;
 	  });
 
-	  $route->post ($this->url_prefix."/{id}", function ($id) use ($route)
+	  $route->post ($this->url_prefix."/{id}", function ($id, $chain) use ($route)
 	  {
 	    // Save the details of one existing object
+      if ($this->chained !== null &&
+          $this->chained->editright ($chain) !== TRUE)
+      {
+        if ($this->auth["email"] === "anonymous")
+          throw new Exception (_("Anonymous not allowed"), 401);
+        throw new Exception (_("Access forbidden"), 403);
+      }
       if ($this->accessright ($id) !== TRUE)
       {
         if ($this->auth["email"] === "anonymous")
@@ -800,22 +886,53 @@ echo $content;
 
   /** Authorization : Return TRUE if the user right allow to see the datas
       Return FALSE else */
-  public function accessright ()
+  public function accessright ($id=null)
   {
+    // echo "accessright=".var_export ($id, TRUE)." for ".
+    //                     var_export($this->model_class, TRUE)."\n";
+    if ($this->authorization !== null)
+    {
+      $result = $this->authorization->allow ($this->module,
+                                             $this->auth["email"], "/$id");
+      // echo "RESULT=$result\n";
+      if ($result === "RO") return TRUE;
+      if ($result === "RW") return TRUE;
+      return FALSE;
+    }
     return TRUE;
   }
 
   /** Authorization : Return TRUE if the user right allow to edit the datas 
       Return FALSE else */
-  public function editright ()
+  public function editright ($id=null)
   {
+    // echo "editright=".var_export ($id, TRUE)." for ".
+    //                   var_export($this->model_class, TRUE)."\n";
+    if ($this->authorization !== null)
+    {
+      $result = $this->authorization->allow ($this->module,
+                                             $this->auth["email"], "/$id");
+      // echo "RESULT=$result\n";
+      if ($result === "RW") return TRUE;
+      return FALSE;
+    }
     return TRUE;
   }
 
   /** Authorization : Return TRUE if the $id is in READONLY for the user or
       FALSE if the user have the RW rights */
-  public function readonly ()
+  public function readonly ($id=null)
   {
+    // echo "readonly=".var_export ($id, TRUE)." for ".
+    //                  var_export($this->model_class, TRUE)."\n";
+    if ($this->authorization !== null)
+    {
+      $result = $this->authorization->allow ($this->module,
+                                             $this->auth["email"], "/$id");
+      // echo "RESULT=$result\n";
+      if ($result === "RO") return TRUE;
+      return FALSE;
+    }
     return FALSE;
   }
 }