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   1  <?php
   2  /*
   3   *  $Id: RequiredValidator.php 64 2005-05-13 02:43:56Z root $
   4   *
   5   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   6   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   7   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   8   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   9   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  10   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  11   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  12   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  13   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  14   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  15   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  16   *
  17   * This software consists of voluntary contributions made by many individuals
  18   * and is licensed under the LGPL. For more information please see
  19   * <http://propel.phpdb.org>.
  20   */
  21  
  22  require_once 'propel/validator/BasicValidator.php';
  23  
  24  /**
  25   * A validator for required fields.
  26   *
  27   * Below is an example usage for your Propel xml schema file.
  28   *
  29   * <code>
  30   *   <column name="username" type="VARCHAR" size="25" required="true" />
  31   *
  32   *   <validator column="username">
  33   *     <rule name="required" message="Username is required." />
  34   *   </validator>
  35   * </code>
  36   *
  37   * @author Michael Aichler <aichler@mediacluster.de>
  38   * @version $Revision: 64 $
  39   * @package propel.validator
  40   */
  41  class RequiredValidator implements BasicValidator
  42  {
  43  
  44      /**
  45       * @see BasicValidator::isValid()
  46       */
  47      public function isValid (ValidatorMap $map, $str)
  48      {
  49          return ($str !== null && $str !== "");
  50      }
  51  }