我是Codeigniter的新手,几乎只是为了这个简单的任务而苦苦挣扎,我真的真的不明白。无法让Codeigniter计数结果正常工作
我正在使用Codeigniter版本3.0.4,我正在创建一个项目以创建一个管理页面来监视某些事务数据。
我想要做的就是从SQL Server表中的数据进行计数......只是......
所以,这里是我的模型:
<?php class Dash_model extends CI_Model {
public function __construct()
{
// Call the CI_Model constructor
parent::__construct();
$this->load->database();
}
public function testtotal()
{
$this->db->select('transaction_id');
$this->db->from('dbo.transaction_table'); // I'm using MS SQL Server
$where = "transaction_id='5' OR transaction_id='4'";
$this->db->where($where);
return $this->db->count_all_results();
}
}
?>
然后这里是我的控制器:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Dash_control extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
}
public function index()
{
$this->load->model('dash_model');
$data['testing']=$this->dash_model->testtotal();
$this->load->view('dashboard',$data);
}
}
视图本身,我使用的是引导模板,所以我没有使用CodeIgniter的HTML表类:
<thead>
<tr>
<th>Bank Name</th>
<th>Total Transaction</th>
</tr>
</thead>
<tr>
<td>Lovely Bank</td>
<td><?php echo $testing; ?> </td>
</tr>
我以为一切都看起来不错,但我得到这个错误:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: testing
Filename: views/dashboard.php
Line Number: 147
Backtrace:
File: C:\xampp\htdocs\application\views\dashboard.php
Line: 147
Function: _error_handler
File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 19
Function: view
File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once
就是这样的家伙...... 就像我说的,我真的不明白这一点。这是我第一次与Codeigniter打交道,我办公室的其他员工也从未与Codeigniter打交道,因为他们大多是桌面程序员,他们也在开发另一个项目。
我已经在这里搜索了Stackoverflow,但是我找不到关于我的问题的正确话题,所以我想感谢你们,如果你能帮助我并教我如何让这件事情起作用......
UPDATE
所以我也跟着@santosh导... 我觉得模式似乎工作,但现在我得到了我控制器以下错误:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: testing
Filename: controllers/dash_control.php
Line Number: 19
Backtrace:
File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 19
Function: _error_handler
File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once
这是在我的控制器代码:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Dash_control extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
}
public function index()
{
$this->load->model('dash_model');
$data['testing']=$this->dash_model->testtotal();
$this->load->view('dashboard', $testing);
}
}
下面是我认为的错误:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: testing
Filename: views/dashboard.php
Line Number: 147
Backtrace:
File: C:\xampp\htdocs\application\views\dashboard.php
Line: 147
Function: _error_handler
File: C:\xampp\htdocs\application\controllers\dash_control.php
Line: 19
Function: view
File: C:\xampp\htdocs\index.php
Line: 292
Function: require_once
,这就是我把我的视图文件:
<thead>
<tr>
<th>Bank Name</th>
<th>Total Transaction</th>
</tr>
</thead>
<tr>
<td>Lovely Bank</td>
<td><?php echo $testing; ?></td>
</tr>
非常感谢!有效! –