221 lines
6.5 KiB
PHP
221 lines
6.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator;
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use Symfony\Component\Validator\Exception\InvalidOptionsException;
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use Symfony\Component\Validator\Exception\MissingOptionsException;
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use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
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/**
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* Contains the properties of a constraint definition.
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*
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* A constraint can be defined on a class, an option or a getter method.
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* The Constraint class encapsulates all the configuration required for
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* validating this class, option or getter result successfully.
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*
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* Constraint instances are immutable and serializable.
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*
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* @author Bernhard Schussek <bernhard.schussek@symfony.com>
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*
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* @api
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*/
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abstract class Constraint
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{
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/**
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* The name of the group given to all constraints with no explicit group
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* @var string
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*/
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const DEFAULT_GROUP = 'Default';
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/**
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* Marks a constraint that can be put onto classes
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* @var string
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*/
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const CLASS_CONSTRAINT = 'class';
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/**
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* Marks a constraint that can be put onto properties
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* @var string
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*/
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const PROPERTY_CONSTRAINT = 'property';
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/**
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* @var array
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*/
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public $groups = array(self::DEFAULT_GROUP);
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/**
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* Initializes the constraint with options.
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*
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* You should pass an associative array. The keys should be the names of
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* existing properties in this class. The values should be the value for these
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* properties.
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*
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* Alternatively you can override the method getDefaultOption() to return the
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* name of an existing property. If no associative array is passed, this
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* property is set instead.
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*
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* You can force that certain options are set by overriding
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* getRequiredOptions() to return the names of these options. If any
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* option is not set here, an exception is thrown.
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*
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* @param mixed $options The options (as associative array)
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* or the value for the default
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* option (any other type)
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*
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* @throws InvalidOptionsException When you pass the names of non-existing
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* options
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* @throws MissingOptionsException When you don't pass any of the options
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* returned by getRequiredOptions()
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* @throws ConstraintDefinitionException When you don't pass an associative
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* array, but getDefaultOption() returns
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* NULL
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*
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* @api
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*/
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public function __construct($options = null)
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{
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$invalidOptions = array();
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$missingOptions = array_flip((array) $this->getRequiredOptions());
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if (is_array($options) && count($options) == 1 && isset($options['value'])) {
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$options = $options['value'];
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}
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if (is_array($options) && count($options) > 0 && is_string(key($options))) {
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foreach ($options as $option => $value) {
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if (property_exists($this, $option)) {
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$this->$option = $value;
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unset($missingOptions[$option]);
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} else {
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$invalidOptions[] = $option;
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}
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}
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} else if (null !== $options && ! (is_array($options) && count($options) === 0)) {
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$option = $this->getDefaultOption();
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if (null === $option) {
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throw new ConstraintDefinitionException(
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sprintf('No default option is configured for constraint %s', get_class($this))
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);
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}
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if (property_exists($this, $option)) {
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$this->$option = $options;
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unset($missingOptions[$option]);
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} else {
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$invalidOptions[] = $option;
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}
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}
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if (count($invalidOptions) > 0) {
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throw new InvalidOptionsException(
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sprintf('The options "%s" do not exist in constraint %s', implode('", "', $invalidOptions), get_class($this)),
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$invalidOptions
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);
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}
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if (count($missingOptions) > 0) {
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throw new MissingOptionsException(
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sprintf('The options "%s" must be set for constraint %s', implode('", "', array_keys($missingOptions)), get_class($this)),
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array_keys($missingOptions)
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);
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}
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$this->groups = (array) $this->groups;
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}
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/**
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* Unsupported operation.
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*/
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public function __set($option, $value)
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{
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throw new InvalidOptionsException(sprintf('The option "%s" does not exist in constraint %s', $option, get_class($this)), array($option));
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}
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/**
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* Adds the given group if this constraint is in the Default group
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*
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* @param string $group
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*
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* @api
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*/
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public function addImplicitGroupName($group)
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{
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if (in_array(Constraint::DEFAULT_GROUP, $this->groups) && !in_array($group, $this->groups)) {
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$this->groups[] = $group;
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}
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}
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/**
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* Returns the name of the default option
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*
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* Override this method to define a default option.
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*
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* @return string
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* @see __construct()
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*
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* @api
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*/
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public function getDefaultOption()
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{
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return null;
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}
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/**
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* Returns the name of the required options
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*
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* Override this method if you want to define required options.
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*
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* @return array
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* @see __construct()
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*
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* @api
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*/
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public function getRequiredOptions()
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{
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return array();
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}
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/**
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* Returns the name of the class that validates this constraint
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*
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* By default, this is the fully qualified name of the constraint class
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* suffixed with "Validator". You can override this method to change that
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* behaviour.
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*
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* @return string
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*
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* @api
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*/
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public function validatedBy()
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{
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return get_class($this).'Validator';
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}
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/**
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* Returns whether the constraint can be put onto classes, properties or
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* both
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*
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* This method should return one or more of the constants
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* Constraint::CLASS_CONSTRAINT and Constraint::PROPERTY_CONSTRAINT.
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*
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* @return string|array One or more constant values
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*
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* @api
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*/
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public function getTargets()
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{
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return self::PROPERTY_CONSTRAINT;
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}
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}
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