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我有一个名为 View1.ctp 的视图。在这个视图中,我正在调用一个名为“Captcha”的控制器函数,它的视图是 captcha.ctp。我在视图 captcha.ctp 中有一个名为 $text 的变量。我想访问这个 $text我 view1.ctp 中的变量。我该怎么办?(注:Cakephp 版本-2.3) View1.ctp

       <h1>Add Comment</h1>
      <?php
       $post_id= $posts['Post']['id'];
       echo $this->Form->create('Comment',array('action' => 'comment','url' =>          array($post_id,$flag)));
        echo $this->Form->input('name');
        echo $this->Form->input('email');
        echo $this->Form->input('text', array('rows' => '3'));
        echo "Enter Captcha Code:    ";  
        echo $this->Html->image(
       array('controller' => 'posts', 'action' => 'captcha'));
       echo $this->Form->input('code');
       echo $this->Form->end('Add comment'); 
          ?>

         captcha.ctp:

          <?php 
           $this->Session->read(); 
           $text = rand(10000,99996); 
           $_SESSION["vercode"] = $text; 
           $height = 25; 
           $width = 65; 
           $image_p = imagecreate($width, $height); 
           $black = imagecolorallocate($image_p, 0, 0, 0); 
           $white = imagecolorallocate($image_p, 255, 255, 255); 
           $font_size = 14; 
           imagestring($image_p, $font_size, 5, 5, $text, $white); 
           imagejpeg($image_p, null, 80); 
           ?>
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1 回答 1

0

更好的方法是将 Captcha 视图改为Helper,这样更合适。因此,将 captcha.ctp 移动到 app/View/Helper/CaptchaHelper.php,并将其内容包装在一个类中,例如:

<?php
App::uses('AppHelper', 'View/Helper');

class CaptchaHelper extends AppHelper {

    function create() {
        // This line doesn't make much sense as no data from the session is used
        // $this->Session->read(); 

        $text = rand(10000, 99996); 

        // Don't use the $_SESSION superglobal in Cake apps
        // $_SESSION["vercode"] = $text; 

        // Use SessionComponent::write instead
        $session = new SessionComponent(new ComponentCollection());
        $session->write('vercode', $text);

        $height = 25; 
        $width = 65; 
        $image_p = imagecreate($width, $height); 
        $black = imagecolorallocate($image_p, 0, 0, 0); 
        $white = imagecolorallocate($image_p, 255, 255, 255); 
        $font_size = 14; 
        imagestring($image_p, $font_size, 5, 5, $text, $white);

        // Return the generated image
        return imagejpeg($image_p, null, 80);
    }

}

然后在您的 PostsController 中,添加Captcha到 helpers 数组:

public $helpers = array('Captcha');

(或者,如果您已经有一个辅助数组,只需将其附加到该数组即可。)

然后从您的 View1.ctp 中,您可以调用助手返回图像:

echo $this->Html->image($this->Captcha->create());

它的“预期”值将存储在 Session keyvercode中,您也可以在表单处理逻辑中从 PostsController 中读取该值。

于 2013-02-26T10:21:14.853 回答