Question

我有一个名为View1.ctp的视图。在这个视图中我调用了一个名为'Captcha'的控制器函数，其中的视图是captcha.ctp。我有一个名为$ text的变量，在视图中，captcha.ctp.I想要访问这个$ text变量在我的view1.ctp中。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); 
           ?>

Answer 1

更好的方法是将Captcha视图改为Helper，这更合适。所以将captcha.ctp移动到app / View / Helper / CaptchaHelper.php，并将其内容包装在一个类中，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PostsController中，将Captcha添加到帮助程序数组：

public $helpers = array('Captcha');

（或者如果你已经有一个帮助器数组，只需将它附加到该数组。）

然后从View1.ctp中，您可以调用帮助程序返回图像：

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

它的“预期”值将存储在会话密钥vercode中，您也可以在表单处理逻辑中从PostsController中读取它。

在另一个视图中访问视图变量-Cakephp

1 个答案: