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<?php |
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namespace Charcoal\Object; |
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use InvalidArgumentException; |
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// From 'charcoal-core' |
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use Charcoal\Loader\CollectionLoader; |
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// From 'charcoal-object' |
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use Charcoal\Object\ObjectRevision; |
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use Charcoal\Object\ObjectRevisionInterface; |
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/** |
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* |
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*/ |
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trait RevisionableTrait |
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{ |
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/** |
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* @var boolean $revisionEnabled |
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*/ |
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protected $revisionEnabled = true; |
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/** |
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* The class name of the object revision model. |
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* |
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* Must be a fully-qualified PHP namespace and an implementation of |
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* {@see \Charcoal\Object\ObjectRevisionInterface}. Used by the model factory. |
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* |
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* @var string |
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*/ |
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private $objectRevisionClass = ObjectRevision::class; |
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/** |
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* @param boolean $enabled The (revision) enabled flag. |
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* @return RevisionableInterface Chainable |
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*/ |
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public function setRevisionEnabled($enabled) |
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{ |
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$this->revisionEnabled = !!$enabled; |
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return $this; |
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} |
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/** |
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* @return boolean |
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*/ |
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public function getRevisionEnabled() |
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{ |
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return $this->revisionEnabled; |
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} |
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/** |
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* Create a revision object. |
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* |
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* @return ObjectRevisionInterface |
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*/ |
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public function createRevisionObject() |
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{ |
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$rev = $this->modelFactory()->create($this->getObjectRevisionClass()); |
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return $rev; |
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} |
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/** |
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* Set the class name of the object revision model. |
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* |
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* @param string $className The class name of the object revision model. |
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* @throws InvalidArgumentException If the class name is not a string. |
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* @return AbstractPropertyDisplay Chainable |
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*/ |
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protected function setObjectRevisionClass($className) |
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{ |
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if (!is_string($className)) { |
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throw new InvalidArgumentException( |
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'Route class name must be a string.' |
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); |
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} |
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$this->objectRevisionClass = $className; |
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return $this; |
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} |
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/** |
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* Retrieve the class name of the object revision model. |
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* |
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* @return string |
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*/ |
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public function getObjectRevisionClass() |
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{ |
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return $this->objectRevisionClass; |
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} |
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/** |
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* Alias of {@see self::getObjectRevisionClass()}. |
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* |
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* @return string |
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*/ |
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public function objectRevisionClass() |
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{ |
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return $this->getObjectRevisionClass(); |
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} |
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/** |
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* @see \Charcoal\Object\ObjectRevision::create_fromObject() |
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* @return ObjectRevision |
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*/ |
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public function generateRevision() |
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{ |
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$rev = $this->createRevisionObject(); |
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$rev->createFromObject($this); |
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if (!empty($rev->getDataDiff())) { |
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$rev->save(); |
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} |
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return $rev; |
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} |
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/** |
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* @see \Charcoal\Object\ObejctRevision::lastObjectRevision |
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* @return ObjectRevision |
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*/ |
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public function latestRevision() |
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{ |
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$rev = $this->createRevisionObject(); |
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$rev = $rev->lastObjectRevision($this); |
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return $rev; |
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} |
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/** |
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* @see \Charcoal\Object\ObejctRevision::objectRevisionNum |
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* @param integer $revNum The revision number. |
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* @return ObjectRevision |
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*/ |
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public function revisionNum($revNum) |
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{ |
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$rev = $this->createRevisionObject(); |
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$rev = $rev->objectRevisionNum($this, intval($revNum)); |
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return $rev; |
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} |
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/** |
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* Retrieves all revisions for the current objet |
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* |
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* @param callable $callback Optional object callback. |
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* @return array |
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*/ |
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public function allRevisions(callable $callback = null) |
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{ |
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$loader = new CollectionLoader([ |
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'logger' => $this->logger, |
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'factory' => $this->modelFactory(), |
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]); |
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$loader->setModel($this->createRevisionObject()); |
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$loader->addFilter('targetType', $this->objType()); |
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$loader->addFilter('targetId', $this->id()); |
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$loader->addOrder('revTs', 'desc'); |
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if ($callback !== null) { |
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$loader->setCallback($callback); |
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} |
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$revisions = $loader->load(); |
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return $revisions->objects(); |
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} |
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/** |
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* @param integer $revNum The revision number to revert to. |
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* @throws InvalidArgumentException If revision number is invalid. |
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* @return boolean Success / Failure. |
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*/ |
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public function revertToRevision($revNum) |
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{ |
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if (!$revNum) { |
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throw new InvalidArgumentException( |
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'Invalid revision number' |
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); |
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} |
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$rev = $this->revisionNum(intval($revNum)); |
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if (!$rev->id()) { |
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return false; |
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} |
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if (isset($obj['lastModifiedBy'])) { |
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$obj['lastModifiedBy'] = $rev->getRevUser(); |
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} |
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$this->setData($rev->getDataObj()); |
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$this->update(); |
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return true; |
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} |
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/** |
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* Retrieve the object model factory. |
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* |
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* @return \Charcoal\Factory\FactoryInterface |
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*/ |
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abstract public function modelFactory(); |
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/** |
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* @return \Charcoal\Model\MetadataInterface |
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*/ |
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abstract public function metadata(); |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: