php - zend 表单验证

Question

我想知道 Zend_Form 如何验证输入，我的意思是它如何知道要验证哪些输入字段。我查看了 php globals($_POST, $_GET) 并且没有看到任何设置为标识符的东西(例如)以了解如何验证。谁能给我推荐这方面的指南？

Answer 1

嗯，找出答案的最佳选择是查看 code of Zend_Form :

/**
 * Validate the form
 *
 * @param  array $data
 * @return boolean
 */
public function isValid($data)
{
    if (!is_array($data)) {
        require_once 'Zend/Form/Exception.php';
        throw new Zend_Form_Exception(__METHOD__ . ' expects an array');
    }
    $translator = $this->getTranslator();
    $valid      = true;
    $eBelongTo  = null;

    if ($this->isArray()) {
        $eBelongTo = $this->getElementsBelongTo();
        $data = $this->_dissolveArrayValue($data, $eBelongTo);
    }
    $context = $data;
    foreach ($this->getElements() as $key => $element) {
        if (null !== $translator && $this->hasTranslator()
                && !$element->hasTranslator()) {
            $element->setTranslator($translator);
        }
        $check = $data;
        if (($belongsTo = $element->getBelongsTo()) !== $eBelongTo) {
            $check = $this->_dissolveArrayValue($data, $belongsTo);
        }
        if (!isset($check[$key])) {
            $valid = $element->isValid(null, $context) && $valid;
        } else {
            $valid = $element->isValid($check[$key], $context) && $valid;
            $data = $this->_dissolveArrayUnsetKey($data, $belongsTo, $key);
        }
    }
    foreach ($this->getSubForms() as $key => $form) {
        if (null !== $translator && !$form->hasTranslator()) {
            $form->setTranslator($translator);
        }
        if (isset($data[$key]) && !$form->isArray()) {
            $valid = $form->isValid($data[$key]) && $valid;
        } else {
            $valid = $form->isValid($data) && $valid;
        }
    }

    $this->_errorsExist = !$valid;

    // If manually flagged as an error, return invalid status
    if ($this->_errorsForced) {
        return false;
    }

    return $valid;
}

简而言之，Zend_Form 将遍历表单中所有已配置的元素，并将它们与您传递给它的数组中的值进行比较。如果匹配，它将根据配置的验证器验证该单个值。