ConstraintViolationInterface.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\Validator;


/**
 * A violation of a constraint that happened during validation.
 *
 * For each constraint that fails during validation one or more violations are
 * created. The violations store the violation message, the path to the failing
 * element in the validation graph and the root element that was originally
 * passed to the validator. For example, take the following graph:
 *
 * <pre>
 * (Person)---(firstName: string)
 *      \
 *   (address: Address)---(street: string)
 * </pre>
 *
 * If the <tt>Person</tt> object is validated and validation fails for the
 * "firstName" property, the generated violation has the <tt>Person</tt>
 * instance as root and the property path "firstName". If validation fails
 * for the "street" property of the related <tt>Address</tt> instance, the root
 * element is still the person, but the property path is "address.street".
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 *
 * @api
 */
interface ConstraintViolationInterface {

  /**
   * Returns the violation message.
   *
   * @return string The violation message.
   *
   * @api
   */
  public function getMessage();

  /**
   * Returns the raw violation message.
   *
   * The raw violation message contains placeholders for the parameters
   * returned by {@link getMessageParameters}. Typically you'll pass the
   * message template and parameters to a translation engine.
   *
   * @return string The raw violation message.
   *
   * @api
   */
  public function getMessageTemplate();

  /**
   * Returns the parameters to be inserted into the raw violation message.
   *
   * @return array A possibly empty list of parameters indexed by the names
   *               that appear in the message template.
   *
   * @see getMessageTemplate
   *
   * @api
   */
  public function getMessageParameters();

  /**
   * Returns a number for pluralizing the violation message.
   *
   * For example, the message template could have different translation based
   * on a parameter "choices":
   *
   * <ul>
   * <li>Please select exactly one entry. (choices=1)</li>
   * <li>Please select two entries. (choices=2)</li>
   * </ul>
   *
   * This method returns the value of the parameter for choosing the right
   * pluralization form (in this case "choices").
   *
   * @return integer|null The number to use to pluralize of the message.
   */
  public function getMessagePluralization();

  /**
   * Returns the root element of the validation.
   *
   * @return mixed The value that was passed originally to the validator when
   *               the validation was started. Because the validator traverses
   *               the object graph, the value at which the violation occurs
   *               is not necessarily the value that was originally validated.
   *
   * @api
   */
  public function getRoot();

  /**
   * Returns the property path from the root element to the violation.
   *
   * @return string The property path indicates how the validator reached
   *                the invalid value from the root element. If the root
   *                element is a <tt>Person</tt> instance with a property
   *                "address" that contains an <tt>Address</tt> instance
   *                with an invalid property "street", the generated property
   *                path is "address.street". Property access is denoted by
   *                dots, while array access is denoted by square brackets,
   *                for example "addresses[1].street".
   *
   * @api
   */
  public function getPropertyPath();

  /**
   * Returns the value that caused the violation.
   *
   * @return mixed The invalid value that caused the validated constraint to
   *               fail.
   *
   * @api
   */
  public function getInvalidValue();

  /**
   * Returns a machine-digestible error code for the violation.
   *
   * @return mixed The error code.
   */
  public function getCode();

}