Codeigniter設置變量

Question

我有一個控制器命名categories我在其中

function description($id=null) {
    $this->load->helper(array('form', 'url'));
    $this->load->library('session');
    $this->load->view('category/description');
    $this->load->model('userdata_model');
    $data = $this->userdata_model->desc($id);
    $this->load->view('category/description', $data);
}

現在當我做print_r($data); 它給了我以下結果

Array
(
    [0] => stdClass Object
        (
            [id] => 4481
            [title] => Dvd Recorder Post
            [image_name] => 
            [image_name_work] => 
            [video_name] => 
            [work_type] => tape-recrder
            [description] => Test first..
            [agency] => 
            [services] => 
            [photographer] => 
            [company] => 
            [director] => 
            [dop] => 
            [userid] => 
            [display_order] => 99999
            [latest_work] => No
            [status] => Active
            [post_adddate] => 2012-03-26 10:14:07
            [date] => 2012-03-26 10:14:07
            [sub_cat] => dvd-reorder
            [views] => 75
            [url] => Dvd-recorder-post
            [post_cache] => 
            [post_cat_id] => 0
            [post_link] => 
            [post_pubdate] => 
            [post_seo_url] => 
            [post_status] => 0
            [post_type] => 0
        )

)

現在，當我嘗試在視圖頁面中訪問description.php中的$data ，它會出現以下錯誤

 A PHP Error was encountered Severity: Notice Message: Undefined variable: data Filename: category/description.php Line Number: 2 

有誰知道為什么？

Answer 1

CodeIgniter使用extract在視圖頁面中生成變量。 因此，您必須傳入一個關聯數組作為$this->load->view()調用的第二個參數。 在這種情況下，如果您希望將變量命名為data ，則必須傳入一個數組，其中元素鍵是data ，值是從模型中檢索的數據。

$data = array('data' => $this->userdata_model->desc($id));
$this->load->view('category/description', $data);

Answer 2

你可以這樣做

 $data["ids"] = $this->userdata_model->desc($id);
 $this->load->view('category/description', $data);

在您的視圖中，您可以使用

$ids

Answer 3

$data是一個數組，包含您希望在視圖頁面上顯示的所有信息。

在控制器中：

$this->load->model( 'userdata_model' );
// .. other code
$data = array(
        'description' => $this->userdata_model->desc($id)
    );
$this->load->view('category/description', $data );

在視圖中：

<div><?php echo $description; ?></div>

Answer 4

因為您在調用模型之前調用了View，所以刪除該行，幾乎是好的

$this->load->helper(array('form', 'url'));
$this->load->library('session');
$this->load->model('your model');
$data['Posts'] = $this->YourModel->ModelMethod();
$this->load->view('Your view', $data);

在你看來像這樣的foreach

<?php foreach($Posts as $item): ?>
  <?= item['id']   ;?> Or if you have STD Class <?= item->id   ;?>
<?php endforeach; ?>