thinkphp框架实现数据添加和显示功能

<form role="form" method="post" action="__MODULE__/Admin/User/doAdd">
         <div class="input-group"> <span class="input-group-addon">用<img src="__PUBLIC__/end/images/em.png" alt="" width="6" height="20">户<img src="__PUBLIC__/end/images/em.png" alt="" width="6" height="20">名</span>
          <input type="text" class="form-control" placeholder="" name="username">
         </div>
         <div class="input-group "> <span class="input-group-addon" for="inputWarning1">真实姓名</span>
          <input type="text" class="form-control" placeholder="" id="input" name="realname">
         </div>
         <div class="input-group"> <span class="input-group-addon">手机号码</span>
          <input type="text" class="form-control" placeholder="" name="telphone">
         </div>
         <div class="input-group"> <span class="input-group-addon">电子邮箱</span>
          <input type="text" class="form-control" placeholder="" name="email">
         </div>
         <div class="input-group"> <span class="input-group-addon">添加时间</span>
          <input type="text" class="form-control" placeholder="2014-05-22" name="resgistertime">
         </div>
        <div class="input-group"> <span class="input-group-addon">设置密码</span>
          <input type="text" class="form-control" placeholder="123456" name="password">
         </div>
        <div class="input-group"> <span class="input-group-addon">确认密码</span>
          <input type="text" class="form-control" placeholder="123456" name="repassword">
         </div>
         <div class="input-group">
          <button type="submit" class="btn btn-primary "> &nbsp;&nbsp;保<img src="__PUBLIC__/end/images/em.png" alt="" width="20" height="20">存&nbsp;&nbsp;</button>
         </div>
        </form> 

<?php
namespace Admin\Model;
use Think\Model;

class AdminUsersModel extends Model {
  public $_validate = array (
    array("username", "require", "用户名不能为空"),
    array("realname", "require", "真实姓名不能为空"),
    array("password", "require", "密码不能为空"),
    array("repassword", "require", "确认密码不能为空"),
    array("telphone", "require", "电话不能为空"),
    array("email", "require", "邮箱不能为空"),
    array("resgistertime", "require", "注册时间不能为空")
  );
} 

public function add(){
  $this->display();
}
public function doAdd(){
  if (!IS_POST) {
    exit("bad request!");
  }
  $adminUsersModel = D("AdminUsers");
  if (!$adminUsersModel->create()) {
    $this->error($adminUsersModel->getError());
  }
  if ($adminUsersModel->add()) {             
    $this->suess("添加成功！",U("Admin/User/lists"));
  }
  else{
    $this->error("添加失败！");
  }
  
}