diff --git a/module/common/control.php b/module/common/control.php
index 50d42de18b..3b7d0a2fb2 100644
--- a/module/common/control.php
+++ b/module/common/control.php
@@ -348,17 +348,6 @@ EOT;
         return $app->session->product;
     }
 
-    /* 保存最后浏览的项目id到session会话中。*/
-    public static function saveProjectState($projectID, $projects)
-    {
-        global $app;
-        if($projectID > 0) $app->session->set('project', (int)$projectID);
-        if($projectID == 0 and $app->cookie->lastProject)    $app->session->set('project', (int)$app->cookie->lastProject);
-        if($projectID == 0 and $app->session->project == '') $app->session->set('project', $projects[0]);
-        if(!in_array($app->session->project, $projects)) $app->session->set('project', $projects[0]);
-        return $app->session->project;
-    }
-
     /**
      * Create changes of one object.
      * 
diff --git a/module/project/control.php b/module/project/control.php
index 4e10b19313..0f23421c74 100644
--- a/module/project/control.php
+++ b/module/project/control.php
@@ -56,7 +56,7 @@ class project extends control
         $this->loadModel('product');
 
         /* 获取当前项目的详细信息，相关产品，子项目以及团队成员。*/
-        $projectID     = common::saveProjectState($projectID, array_keys($this->projects));
+        $projectID     = $this->project->saveState($projectID, array_keys($this->projects));
         $project       = $this->project->getById($projectID);
         $products      = $this->project->getProducts($project->id);
         $childProjects = $this->project->getChildProjects($project->id);
diff --git a/module/project/model.php b/module/project/model.php
index 5356591d86..88b5bc0a2d 100644
--- a/module/project/model.php
+++ b/module/project/model.php
@@ -62,6 +62,23 @@ class projectModel extends model
         }
     }
 
+    /**
+     * Save the project id user last visited to session.
+     * 
+     * @param  int   $projectID 
+     * @param  array $projects 
+     * @access public
+     * @return int
+     */
+    public function saveState($projectID, $projects)
+    {
+        if($projectID > 0) $this->session->set('project', (int)$projectID);
+        if($projectID == 0 and $this->cookie->lastProject)    $this->session->set('project', (int)$this->cookie->lastProject);
+        if($projectID == 0 and $this->session->project == '') $this->session->set('project', $projects[0]);
+        if(!in_array($this->session->project, $projects)) $this->session->set('project', $projects[0]);
+        return $this->session->project;
+    }
+
     /* 新增项目。*/
     public function create()
     {