public function chart_tasks()
    {
        $project_id = $this->input->post('project_id');
        $task_list = $this->db->get_where('tasks',array('project'=>$project_id))->result_array();
        $taskss = array();
        $tasks_val = array();
        $i = 0;
        if(count($task_list) != 0)
        {
        foreach($task_list as $tasks){
            // $s_date_y = date('Y',strtotime($tasks['date_added']));
            // $s_date_m = date('m',strtotime($tasks['date_added']));
            // $s_date_d = date('j',strtotime($tasks['date_added']));
            // $e_date_y = date('Y',strtotime($tasks['due_date']));
            // $e_date_m = date('m',strtotime($tasks['due_date']));
            // $e_date_d = date('j',strtotime($tasks['due_date']));
            $s_date_y = date('D M d Y H:i:s',strtotime($tasks['date_added']));
            $e_date_y = date('D M d Y H:i:s',strtotime($tasks['due_date']));

            $r[$i]['c'][]= array('v'=>$tasks['t_id']);
            $r[$i]['c'][]= array('v'=>$tasks['task_name']);
            $r[$i]['c'][]= array('v'=>$s_date_y);
            $r[$i]['c'][]= array('v'=>$e_date_y);
            // $r[$i]['c'][]= array('v'=>"new Date(".$s_date_y.", ".($s_date_m - 1).", ".$s_date_d.")");
            // $r[$i]['c'][]= array('v'=>"new Date(".$e_date_y.", ".($e_date_m - 1).", ".$e_date_d.")");
            $r[$i]['c'][]= array('v'=>null);
            $r[$i]['c'][]= array('v'=>100);
            $r[$i]['c'][]= array('v'=>null);

            $taskss[]=(object)$r[$i];
            //array_push($taskss, $r[$i]);
            $i++;
        }
        $e = json_encode($taskss);
        echo stripslashes($e); exit;
    }else{
        echo 'empty'; exit;
    }
    }