Joomla 模块中的变量

Question

我把头撞到了墙上……我正在制作一个简单的 joomla 模块，在 helper.php 中我无法分配从表单发布的值。

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;

    protected function  __construct() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0


        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

我也试过不使用具有相同零效果的构造函数：(

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;


    function  getValues() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {
        modReservationHelper::getValues;
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0

        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

整个过程从“mod_wreservation.php”调用我调用modReservationHelper::validateForm();

Answer 1

您正在以静态方式调用该类。所以类中的 $this 不会是 modReservationHelper 的对象。

在 mod_wreservation.php 中使用它的正确方法是

$helperObj = new modReservationHelper(); // your choice will work (__counstruct) with this
$helperObj->validateForm();

第二选择

$helperObj = new modReservationHelper();
$helperObj->setValue();
$helperObj->validateForm();

课程将是

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;


    function  setValues() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {            
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0

        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

如果你在mod_wreservation.php中使用它会更好

$post = JRequest::get('post');
$helperObj = new modReservationHelper();
$helperObj->setValue($post);
$helperObj->validateForm();