diff --git a/module/common/model.php b/module/common/model.php
index 2454506cd5..fbcdcdba81 100644
--- a/module/common/model.php
+++ b/module/common/model.php
@@ -136,7 +136,7 @@ class commonModel extends model
      *
      * @param  object $execution
      * @access public
-     * @return object $parentExecution
+     * @return object|false $parentExecution
      */
     public function syncExecutionByChild($execution)
     {
@@ -1474,15 +1474,20 @@ class commonModel extends model
             echo "<li class='dropdown-submenu' id='downloadMobile'><a href='javascript:;'>" . $lang->downloadMobile . "</a><ul class='dropdown-menu pull-left''>";
 
             /* Intranet users use local pictures. */
-            $curl = curl_init();
-            curl_setopt($curl, CURLOPT_URL, 'https://www.zentao.net/page/appqrcode.json');
-            curl_setopt($curl, CURLOPT_TIMEOUT_MS, 200);
-            curl_setopt($curl, CURLOPT_CONNECTTIMEOUT_MS, 200);
-            curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
-            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
-            curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
-            $connected = curl_exec($curl);
-            curl_close($curl);
+            $connected = false;
+            if(extension_loaded('curl'))
+            {
+                $curl = curl_init();
+                curl_setopt($curl, CURLOPT_URL, 'https://www.zentao.net/page/appqrcode.json');
+                curl_setopt($curl, CURLOPT_TIMEOUT_MS, 200);
+                curl_setopt($curl, CURLOPT_CONNECTTIMEOUT_MS, 200);
+                curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+                curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
+                curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
+                $connected = curl_exec($curl);
+                curl_close($curl);
+            }
+
             if($connected)
             {
                 echo "<li><div class='mobile-qrcode'><iframe src='https://www.zentao.net/page/appqrcode.html?v={$config->version}' frameborder='0' scrolling='no' seamless></iframe></div></li>";
@@ -1557,7 +1562,7 @@ class commonModel extends model
         }
         else
         {
-            $orderBy   = "" . trim($fieldName, '`') . "" . '_' . 'asc';
+            $orderBy   = trim($fieldName, '`') . '_' . 'asc';
             $className = 'header';
         }
 
@@ -1569,10 +1574,9 @@ class commonModel extends model
     }
 
     /**
+     * Print link to a module's method.
      *
-     * Print link to an modules' methd.
-     *
-     * Before printing, check the privilege first. If no privilege, return fasle. Else, print the link, return true.
+     * Before printing, check the privilege first. If no privilege, return false. Else, print the link, return true.
      *
      * @param string $module    the module name
      * @param string $method    the method
@@ -1629,7 +1633,7 @@ class commonModel extends model
 
         if(!commonModel::hasPriv('action', 'comment', $object)) return false;
         echo html::commonButton('<i class="icon icon-chat-line"></i> ' . $lang->action->create, '', 'btn btn-link pull-right btn-comment');
-        echo <<<EOD
+        echo <<<EOF
 <div class="modal fade modal-comment">
   <div class="modal-dialog">
     <div class="modal-content">
@@ -1658,7 +1662,7 @@ $(function()
     if(\$body.hasClass('hide-modal-close')) \$body.removeClass('hide-modal-close');
 });
 </script>
-EOD;
+EOF;
     }
 
     /**
@@ -2143,9 +2147,9 @@ EOD;
      * Get the previous and next object.
      *
      * @param  string $type story|task|bug|case
-     * @param  string $objectID
+     * @param  int    $objectID
      * @access public
-     * @return void
+     * @return object
      */
     public function getPreAndNextObject($type, $objectID)
     {
@@ -2267,6 +2271,7 @@ EOD;
      *
      * @param  string    $sql
      * @param  string    $objectType story|task|bug|testcase
+     * @param  bool      $onlyCondition
      * @access public
      * @return void
      */
@@ -2836,7 +2841,7 @@ EOD;
     /**
      * Check whether view type is tutorial
      * @access public
-     * @return boolean
+     * @return bool
      */
     public static function isTutorialMode()
     {
@@ -3095,23 +3100,23 @@ EOD;
     /**
      * Response.
      *
-     * @param  string $code
+     * @param  string $reasonPhrase
      * @access public
      * @return void
      */
-    public function response($code)
+    public function response($reasonPhrase)
     {
         $response = new stdclass();
         if(isset($this->config->entry->errcode))
         {
-            $response->errcode = $this->config->entry->errcode[$code];
-            $response->errmsg  = urlencode($this->lang->entry->errmsg[$code]);
+            $response->errcode = $this->config->entry->errcode[$reasonPhrase];
+            $response->errmsg  = urlencode($this->lang->entry->errmsg[$reasonPhrase]);
 
             die(urldecode(json_encode($response)));
         }
         else
         {
-            $response->error = $code;
+            $response->error = $reasonPhrase;
             die(urldecode(json_encode($response)));
         }
     }
@@ -3120,10 +3125,10 @@ EOD;
     /**
      * Http response with header.
      *
-     * @param  string       $url
-     * @param  string|array $data
-     * @param  array        $options   This is option and value pair, like CURLOPT_HEADER => true. Use curl_setopt function to set options.
-     * @param  array        $headers   Set request headers.
+     * @param  string              $url
+     * @param  string|array|object $data
+     * @param  array               $options   This is option and value pair, like CURLOPT_HEADER => true. Use curl_setopt function to set options.
+     * @param  array               $headers   Set request headers.
      * @static
      * @access public
      * @return string
@@ -3140,16 +3145,16 @@ EOD;
 
         $curl = curl_init();
         curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
-        curl_setopt($curl, CURLOPT_USERAGENT, 'Sae T OAuth2 v0.1');
+        curl_setopt($curl, CURLOPT_USERAGENT, 'ZenTao PMS ' . $app->config->version);
         curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 30);
         curl_setopt($curl, CURLOPT_TIMEOUT, 30);
-        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
-        curl_setopt($curl, CURLOPT_ENCODING, "");
-        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
-        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($curl, CURLOPT_ENCODING, '');
+        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
         curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
         curl_setopt($curl, CURLOPT_HEADER, true);
-        curl_setopt($curl, CURLINFO_HEADER_OUT, TRUE);
+        curl_setopt($curl, CURLINFO_HEADER_OUT, true);
         curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
         curl_setopt($curl, CURLOPT_URL, $url);
 
@@ -3175,8 +3180,8 @@ EOD;
         {
             $field = explode(':', $item);
             if(count($field) < 2) continue;
-            $headerkey = array_shift($field);
-            $newHeader[$headerkey] = join('', $field);
+            $headerKey = array_shift($field);
+            $newHeader[$headerKey] = join('', $field);
         }
         curl_close($curl);
 
@@ -3240,17 +3245,17 @@ EOD;
 
         $curl = curl_init();
         curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
-        curl_setopt($curl, CURLOPT_USERAGENT, 'Sae T OAuth2 v0.1');
+        curl_setopt($curl, CURLOPT_USERAGENT, 'ZenTao PMS ' . $app->config->version);
         curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout);
         curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
-        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
+        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
         curl_setopt($curl, CURLOPT_ENCODING, "");
-        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
-        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
+        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
         curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
-        curl_setopt($curl, CURLOPT_HEADER, FALSE);
+        curl_setopt($curl, CURLOPT_HEADER, false);
         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 2);
-        curl_setopt($curl, CURLINFO_HEADER_OUT, TRUE);
+        curl_setopt($curl, CURLINFO_HEADER_OUT, true);
         curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
         curl_setopt($curl, CURLOPT_URL, $url);
 
@@ -3357,13 +3362,13 @@ EOD;
     /**
      * Get relations for two object.
      *
-     * @param  varchar $atype
-     * @param  int     $aid
-     * @param  varchar $btype
-     * @param  int     $bid
+     * @param  string  $AType
+     * @param  int     $AID
+     * @param  string  $BType
+     * @param  int     $BID
      *
      * @access public
-     * @return string
+     * @return array
      */
     public function getRelations($AType = '', $AID = 0, $BType = '', $BID = 0)
     {
@@ -3386,7 +3391,7 @@ EOD;
      * @param  array   $params
      *
      * @access public
-     * @return string
+     * @return void
      */
     static public function setMenuVars($moduleName, $objectID, $params = array())
     {
@@ -3463,8 +3468,9 @@ EOD;
         }
     }
 
-    /*
+    /**
      * Replace the %s of one key of a menu by objectID or $params.
+     *
      * @param  object  $menu
      * @param  int     $objectID
      * @param  array   $params
diff --git a/module/kanban/view/importexecution.html.php b/module/kanban/view/importexecution.html.php
index d643868bf6..ff5cf423a5 100644
--- a/module/kanban/view/importexecution.html.php
+++ b/module/kanban/view/importexecution.html.php
@@ -67,7 +67,11 @@
           if($execution->type == 'stage') $isClickable = $this->programplan->checkLeafStage($execution->id) ? true : false;
           ?>
           <td title='<?php echo $execution->title;?>'>
-            <a href='javascript:void(0);' <?php echo $isClickable ? "onclick='locateView(\"execution\", $execution->id)'" : '';?>><?php echo $execution->name;?></a>
+            <?php if($isClickable):?>
+            <a href='javascript:void(0);' onclick="locateView('execution', <?php echo $execution->id;?>)"><?php echo $execution->name;?></a>
+            <?php else:?>
+            <?php echo $execution->name;?>
+            <?php endif;?>
           </td>
           <?php else:?>
           <td title='<?php echo $execution->title;?>'><?php echo $execution->name;?></td>
diff --git a/module/personnel/model.php b/module/personnel/model.php
index 35f427d294..fb223b1548 100644
--- a/module/personnel/model.php
+++ b/module/personnel/model.php
@@ -376,15 +376,7 @@ class personnelModel extends model
         }
 
         /* The number of hours per person. */
-        $userHours = array();
-        if($this->config->edition != 'open')
-        {
-            $userHours = $this->getUserEffortHours($userTasks);
-        }
-        else
-        {
-            $userHours = $this->getUserHours($userTasks);
-        }
+        $userHours = $this->getUserHours($userTasks);
 
         foreach($userHours as $account => $hours)
         {
@@ -395,33 +387,6 @@ class personnelModel extends model
         return $invest;
     }
 
-    /**
-     * Get user hours.
-     *
-     * @param  object    $userTasks
-     * @access public
-     * @return object
-     */
-    public function getUserEffortHours($userTasks)
-    {
-        $accounts   = array();
-        $taskIDList = array();
-        foreach($userTasks as $account => $taskID)
-        {
-            $accounts[] = $account;
-            $taskIDList = array_merge($taskIDList, $taskID);
-        }
-
-        $userHours = $this->dao->select('account, sum(`left`) as `left`, sum(consumed) as consumed')->from(TABLE_EFFORT)
-            ->where('account')->in($accounts)
-            ->andWhere('deleted')->eq(0)
-            ->andWhere('objectType')->eq('task')
-            ->andWhere('objectID')->in($taskIDList)
-            ->groupBy('account')
-            ->fetchAll('account');
-        return $userHours;
-    }
-
     /**
      * Get user hours.
      *
@@ -439,12 +404,31 @@ class personnelModel extends model
             $taskIDList = array_merge($taskIDList, $taskID);
         }
 
-        $userHours = $this->dao->select('account, sum(`left`) as `left`, sum(consumed) as consumed')->from(TABLE_EFFORT)
+        $effortList = $this->dao->select('id, account, objectID , `left`, consumed')->from(TABLE_EFFORT)
             ->where('account')->in($accounts)
+            ->andWhere('deleted')->eq(0)
             ->andWhere('objectID')->in($taskIDList)
             ->andWhere('objectType')->eq('task')
-            ->groupBy('account')
-            ->fetchAll('account');
+            ->orderBy('id_asc')
+            ->fetchGroup('account', 'id');
+
+        $userHours = array();
+        foreach($effortList as $account => $efforts)
+        {
+            $latestLeft = array();
+
+            $userHours[$account] = new stdclass();
+            $userHours[$account]->left     = 0;
+            $userHours[$account]->consumed = 0;
+
+            foreach($efforts as $effort)
+            {
+                $latestLeft[$effort->objectID]  = $effort->left;
+                $userHours[$account]->consumed += $effort->consumed;
+            }
+            $userHours[$account]->left = array_sum($latestLeft);
+        }
+
         return $userHours;
     }
 
diff --git a/module/repo/model.php b/module/repo/model.php
index 18071a5972..1495a87fd5 100644
--- a/module/repo/model.php
+++ b/module/repo/model.php
@@ -1871,7 +1871,7 @@ class repoModel extends model
                         $_POST['objectType'][1] = 'task';
                         $_POST['objectID'][1]   = $taskID;
                         $_POST['work'][1]       = str_replace('<br />', "\n", $action->comment);
-                        if(is_dir($this->app->getModuleRoot() . 'effort'))
+                        if($this->config->edition != 'open')
                         {
                             $this->loadModel('effort')->batchCreate();
                         }
diff --git a/module/story/model.php b/module/story/model.php
index 4d360b4ff1..aa372720bf 100644
--- a/module/story/model.php
+++ b/module/story/model.php
@@ -237,7 +237,6 @@ class storyModel extends model
             ->setIF(!in_array($this->post->source, $this->config->story->feedbackSource), 'notifyEmail', '')
             ->setIF($executionID > 0, 'stage', 'projected')
             ->setIF($bugID > 0, 'fromBug', $bugID)
-            ->setIF($this->post->assignedTo, 'assignedDate', helper::now())
             ->join('assignedTo', '')
             ->join('mailto', ',')
             ->stripTags($this->config->story->editor->create['id'], $this->config->allowedTags)
diff --git a/module/story/view/create.html.php b/module/story/view/create.html.php
index b4970ee8a8..37ff043ab6 100644
--- a/module/story/view/create.html.php
+++ b/module/story/view/create.html.php
@@ -59,7 +59,7 @@ foreach(explode(',', $config->story->create->requiredFields) as $field)
               <?php if($branches and $type != 'story') echo html::select('branch', $branches, $branch, "onchange='loadBranch();' class='form-control chosen control-branch'");?>
               </div>
             </td>
-            <?php if(!((!$branches and $type == 'story') or $type == 'requirement')):?>
+            <?php if($branches and $type == 'story'):?>
             <td colspan='2' id='assignedToBox' class="switchBranch">
               <div class='input-group'>
                 <div class="input-group-addon assignedTo"><?php echo $lang->story->assignedTo;?></div>
@@ -128,7 +128,8 @@ foreach(explode(',', $config->story->create->requiredFields) as $field)
               <i class="icon-exclamation-sign"></i> <?php echo $lang->story->notice->branch;?>
             </td>
           </tr>
-          <tr class='<?php if($branches) echo "hidden"; ?> switchBranch'>
+          <?php if(!$branches):?>
+          <tr class='switchBranch'>
             <?php if(!$hiddenPlan):?>
             <th class='planTh'><?php echo $lang->story->planAB;?></th>
             <td colspan="2">
@@ -159,6 +160,7 @@ foreach(explode(',', $config->story->create->requiredFields) as $field)
               </div>
             </td>
           </tr>
+          <?php endif;?>
           <tr class='sourceBox <?php echo $hiddenSource;?>'>
             <th><?php echo $lang->story->source;?></th>
             <td colspan='2'>
diff --git a/test/class/personnel.class.php b/test/class/personnel.class.php
index e88ef77a98..3998ec5307 100644
--- a/test/class/personnel.class.php
+++ b/test/class/personnel.class.php
@@ -109,13 +109,14 @@ class personnelTest
     }
 
     /**
-     * getUserEffortHoursTest
+     * GetUserHoursTest
      *
-     * @param mixed $projectID
+     * @param  mixed  $projectID
+     * @param  array  $accounts
      * @access public
      * @return void
      */
-    public function getUserEffortHoursTest($projectID)
+    public function getUserHoursTest($projectID, $accounts)
     {
         global $tester;
         $projects = $tester->dao->select('id')->from(TABLE_PROJECT)->where('id')->in($projectID)->fetchall('id');
@@ -124,6 +125,17 @@ class personnelTest
             ->andWhere('deleted')->eq('0')
             ->fetchAll('id');
 
+        /* Initialize personnel related tasks. */
+        $invest = array();
+        foreach($accounts as $account)
+        {
+            $invest[$account]['createdTask']  = 0;
+            $invest[$account]['finishedTask'] = 0;
+            $invest[$account]['pendingTask']  = 0;
+            $invest[$account]['consumedTask'] = 0;
+            $invest[$account]['leftTask']     = 0;
+        }
+
         $userTasks = array();
 
         foreach($tasks as $task)
@@ -131,23 +143,23 @@ class personnelTest
             if($task->openedBy && isset($invest[$task->openedBy]))
             {
                 $invest[$task->openedBy]['createdTask'] += 1;
-                $userTasks[$task->openedBy][$task->id]    = $task->id;
+                $userTasks[$task->openedBy][$task->id]   = $task->id;
             }
 
             if($task->finishedBy && isset($invest[$task->finishedBy]))
             {
                 $invest[$task->finishedBy]['finishedTask'] += 1;
-                $userTasks[$task->finishedBy][$task->id]     = $task->id;
+                $userTasks[$task->finishedBy][$task->id]    = $task->id;
             }
 
             if($task->assignedTo && $task->status == 'wait' && isset($invest[$task->assignedTo]))
             {
                 $invest[$task->assignedTo]['pendingTask'] += 1;
-                $userTasks[$task->assignedTo][$task->id]    = $task->id;
+                $userTasks[$task->assignedTo][$task->id]   = $task->id;
             }
         }
 
-        $objects = $this->objectModel->getUserEffortHours($userTasks);
+        $objects = $this->objectModel->getUserHours($userTasks);
 
         if(dao::isError()) return dao::getError();
 
diff --git a/test/model/personnel/getuserefforthours.php b/test/model/personnel/getuserefforthours.php
deleted file mode 100755
index 7a189e417c..0000000000
--- a/test/model/personnel/getuserefforthours.php
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/usr/bin/env php
-<?php
-include dirname(dirname(dirname(__FILE__))) . '/lib/init.php';
-include dirname(dirname(dirname(__FILE__))) . '/class/personnel.class.php';
-su('admin');
-
-/**
-
-title=测试 personnelModel->getUserEffortHours();
-cid=1
-pid=1
-
-正常传入的情况 >> 0
-传入不存在的情况 >> 0
-
-*/
-
-$personnel = new personnelTest('admin');
-
-$projectID = array();
-$projectID[0] = 11;
-$projectID[1] = 11111;
-
-$result1 = $personnel->getUserEffortHoursTest($projectID[0]);
-$result2 = $personnel->getUserEffortHoursTest($projectID[1]);
-
-r($result1) && p() && e('0'); //正常传入的情况
-r($result2) && p() && e('0'); //传入不存在的情况
\ No newline at end of file
diff --git a/test/model/personnel/getuserhours.php b/test/model/personnel/getuserhours.php
new file mode 100755
index 0000000000..365740a8cc
--- /dev/null
+++ b/test/model/personnel/getuserhours.php
@@ -0,0 +1,56 @@
+#!/usr/bin/env php
+<?php
+include dirname(dirname(dirname(__FILE__))) . '/lib/init.php';
+include dirname(dirname(dirname(__FILE__))) . '/class/personnel.class.php';
+su('admin');
+
+$project = zdTable('project');
+$project->id->range('1-10');
+$project->project->range('0,0,2{8}');
+$project->type->range('program,project,sprint{8}');
+$project->status->range('doing{3},wait{7}');
+$project->vision->range('rnd');
+$project->name->range('1-10')->prefix('Object');
+$project->multiple->range('1');
+$project->deleted->range('`0`');
+$project->gen(10);
+
+$task = zdTable('task');
+$task->id->range('1');
+$task->name->range('task1');
+$task->project->range('2');
+$task->type->range('dev');
+$task->left->range('1');
+$task->openedBy->range('admin');
+$task->consumed->range('5');
+$task->deleted->range('`0`');
+$task->gen(1);
+
+$effort = zdTable('effort');
+$effort->id->range('1-2');
+$effort->objectType->range('task');
+$effort->objectID->range('1');
+$effort->account->range('admin');
+$effort->left->range('7,1');
+$effort->consumed->range('2,3');
+$effort->deleted->range('`0`');
+$effort->gen(2);
+
+/**
+
+title=测试 personnelModel->getUserHours();
+cid=1
+pid=1
+
+正常传入的情况 >> 1
+传入不存在的情况 >> 0
+
+*/
+
+$personnel = new personnelTest('admin');
+
+$result1 = $personnel->getUserHoursTest('2', array('admin'));
+$result2 = $personnel->getUserHoursTest('100', array('admin'));
+
+r($result1['admin']->left) && p() && e('1'); //正常传入的情况
+r($result2)                && p() && e('0'); //传入不存在的情况