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<?php |
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namespace Divergence\Models; |
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use Exception; |
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use Divergence\Helpers\Util; |
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use Divergence\IO\Database\MySQL as DB; |
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trait Versioning |
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{ |
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public $wasDirty = false; |
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public static $versioningFields = [ |
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'RevisionID' => [ |
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'columnName' => 'RevisionID', |
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'type' => 'integer', |
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'unsigned' => true, |
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'notnull' => false, |
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], |
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]; |
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public static $versioningRelationships = [ |
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'History' => [ |
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'type' => 'history', |
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'order' => ['RevisionID' => 'DESC'], |
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], |
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]; |
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public static function getHistoryTable() |
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{ |
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if (!static::$historyTable) { |
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throw new Exception('Static variable $historyTable must be defined to use model versioning.'); |
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} |
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return static::$historyTable; |
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} |
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/* |
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* Implement specialized getters |
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*/ |
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public static function getRevisionsByID($ID, $options = []) |
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{ |
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$options['conditions'][static::getPrimaryKey()] = $ID; |
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return static::getRevisions($options); |
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} |
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public static function getRevisions($options = []) |
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{ |
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return static::instantiateRecords(static::getRevisionRecords($options)); |
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} |
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public static function getRevisionRecords($options = []) |
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{ |
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$options = Util::prepareOptions($options, [ |
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'indexField' => false, |
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'conditions' => [], |
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'order' => false, |
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'limit' => false, |
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'offset' => 0, |
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]); |
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$query = 'SELECT * FROM `%s` WHERE (%s)'; |
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$params = [ |
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static::getHistoryTable(), |
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count($options['conditions']) ? join(') AND (', static::_mapConditions($options['conditions'])) : 1, |
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]; |
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if ($options['order']) { |
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$query .= ' ORDER BY ' . join(',', static::_mapFieldOrder($options['order'])); |
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} |
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if ($options['limit']) { |
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$query .= sprintf(' LIMIT %u,%u', $options['offset'], $options['limit']); |
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} |
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if ($options['indexField']) { |
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return DB::table(static::_cn($options['indexField']), $query, $params); |
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} else { |
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return DB::allRecords($query, $params); |
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} |
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} |
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public function beforeVersionedSave() |
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{ |
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$this->wasDirty = false; |
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if ($this->isDirty && static::$createRevisionOnSave) { |
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// update creation time |
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$this->Created = time(); |
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$this->wasDirty = true; |
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} |
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} |
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public function afterVersionedSave() |
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{ |
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if ($this->wasDirty && static::$createRevisionOnSave) { |
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// save a copy to history table |
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$recordValues = $this->_prepareRecordValues(); |
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$set = static::_mapValuesToSet($recordValues); |
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DB::nonQuery( |
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'INSERT INTO `%s` SET %s', |
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[ |
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static::getHistoryTable(), |
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join(',', $set), |
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] |
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); |
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} |
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} |
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} |
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Divergence /
framework
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