Zend_Form:如何检查 2 个字段是否相同

问题描述

我创建了一个表单来将用户添加到数据库并使用户可以登录.

I have created a form to add a user to a database and make user available for login.

现在我有两个密码字段(第二个用于验证第一个).如何向 zend_form 添加用于此类验证的验证器?

Now I have two password fields (the second is for validation of the first). How can I add a validator for this kind of validation to zend_form?

这是我的两个密码字段的代码:

This is my code for the two password fields:

    $password = new Zend_Form_Element_Password('password', array(
        'validators'=> array(
            'Alnum',
            array('StringLength', array(6,20))
            ),
        'filters'   => array('StringTrim'),
        'label'     => 'Wachtwoord:'
        ));

    $password->addFilter(new Ivo_Filters_Sha1Filter());

    $password2 = new Zend_Form_Element_Password('password', array(
        'validators'=> array(
            'Alnum',
            array('StringLength', array(6,20))
            ),
        'filters'   => array('StringTrim'),
        'required'  => true,
        'label'     => 'Wachtwoord:'
        ));
    $password2->addFilter(new Ivo_Filters_Sha1Filter());

推荐答案

当我在寻找相同的东西时，我发现这个非常有效的通用 Validator for Identical Fields.我现在找不到它所以我只是发布代码...

When I was looking for the same, I found this very well working generic Validator for Identical Fields. I don't find it now so I just post the code...

<?php

class Zend_Validate_IdenticalField extends Zend_Validate_Abstract {
  const NOT_MATCH = 'notMatch';
  const MISSING_FIELD_NAME = 'missingFieldName';
  const INVALID_FIELD_NAME = 'invalidFieldName';

  /**
   * @var array
  */
  protected $_messageTemplates = array(
    self::MISSING_FIELD_NAME  =>
      'DEVELOPMENT ERROR: Field name to match against was not provided.',
    self::INVALID_FIELD_NAME  =>
      'DEVELOPMENT ERROR: The field "%fieldName%" was not provided to match against.',
    self::NOT_MATCH =>
      'Does not match %fieldTitle%.'
  );

  /**
   * @var array
  */
  protected $_messageVariables = array(
    'fieldName' => '_fieldName',
    'fieldTitle' => '_fieldTitle'
  );

  /**
   * Name of the field as it appear in the $context array.
   *
   * @var string
   */
  protected $_fieldName;

  /**
   * Title of the field to display in an error message.
   *
   * If evaluates to false then will be set to $this->_fieldName.
   *
   * @var string
  */
  protected $_fieldTitle;

  /**
   * Sets validator options
   *
   * @param  string $fieldName
   * @param  string $fieldTitle
   * @return void
  */
  public function __construct($fieldName, $fieldTitle = null) {
    $this->setFieldName($fieldName);
    $this->setFieldTitle($fieldTitle);
  }

  /**
   * Returns the field name.
   *
   * @return string
  */
  public function getFieldName() {
    return $this->_fieldName;
  }

  /**
   * Sets the field name.
   *
   * @param  string $fieldName
   * @return Zend_Validate_IdenticalField Provides a fluent interface
  */
  public function setFieldName($fieldName) {
    $this->_fieldName = $fieldName;
    return $this;
  }

  /**
   * Returns the field title.
   *
   * @return integer
  */
  public function getFieldTitle() {
    return $this->_fieldTitle;
  }

  /**
   * Sets the field title.
   *
   * @param  string:null $fieldTitle
   * @return Zend_Validate_IdenticalField Provides a fluent interface
  */
  public function setFieldTitle($fieldTitle = null) {
    $this->_fieldTitle = $fieldTitle ? $fieldTitle : $this->_fieldName;
    return $this;
  }

  /**
   * Defined by Zend_Validate_Interface
   *
   * Returns true if and only if a field name has been set, the field name is available in the
   * context, and the value of that field name matches the provided value.
   *
   * @param  string $value
   *
   * @return boolean 
  */ 
  public function isValid($value, $context = null) {
    $this->_setValue($value);
    $field = $this->getFieldName();

    if (empty($field)) {
      $this->_error(self::MISSING_FIELD_NAME);
      return false;
    } elseif (!isset($context[$field])) {
      $this->_error(self::INVALID_FIELD_NAME);
      return false;
    } elseif (is_array($context)) {
      if ($value == $context[$field]) {
        return true;
      }
    } elseif (is_string($context) && ($value == $context)) {
      return true;
    }
    $this->_error(self::NOT_MATCH);
    return false;
  }
}
?>

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