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<?php |
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/** |
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* Object Relational Mapping (ORM) "versioned" extension. Allows ORM objects to |
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* be revisioned instead of updated. |
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* |
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* $Id$ |
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* |
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* @package ORM |
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* @author Kohana Team |
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* @copyright (c) 2007-2008 Kohana Team |
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* @license http://kohanaphp.com/license.html |
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*/ |
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class ORM_Versioned_Core extends ORM |
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{ |
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protected $last_version = null; |
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/** |
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* Overload ORM::save() to support versioned data |
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* |
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* @chainable |
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* @return ORM |
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*/ |
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public function save() |
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{ |
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$this->last_version = 1 + ($this->last_version === null ? $this->object['version'] : $this->last_version); |
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$this->__set('version', $this->last_version); |
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parent::save(); |
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if ($this->saved) { |
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$data = array(); |
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foreach ($this->object as $key => $value) { |
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if ($key === 'id') { |
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continue; |
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} |
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$data[$key] = $value; |
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} |
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$data[$this->foreign_key()] = $this->id; |
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$this->db->insert($this->table_name.'_versions', $data); |
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} |
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return $this; |
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} |
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/** |
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* Loads previous version from current object |
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* |
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* @chainable |
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* @return ORM |
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*/ |
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public function previous() |
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{ |
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if (! $this->loaded) { |
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return $this; |
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} |
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$this->last_version = ($this->last_version === null) ? $this->object['version'] : $this->last_version; |
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$version = $this->last_version - 1; |
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$query = $this->db |
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->where($this->foreign_key(), $this->object[$this->primary_key]) |
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->where('version', $version) |
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->limit(1) |
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->get($this->table_name.'_versions'); |
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if ($query->count()) { |
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$this->load_values($query->result(false)->current()); |
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} |
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return $this; |
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} |
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/** |
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* Restores the object with data from stored version |
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* |
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* @param integer version number you want to restore |
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* @return ORM |
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*/ |
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public function restore($version) |
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{ |
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if (! $this->loaded) { |
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return $this; |
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} |
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$query = $this->db |
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->where($this->foreign_key(), $this->object[$this->primary_key]) |
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->where('version', $version) |
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->limit(1) |
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->get($this->table_name.'_versions'); |
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if ($query->count()) { |
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$row = $query->result(false)->current(); |
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foreach ($row as $key => $value) { |
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if ($key === $this->primary_key or $key === $this->foreign_key()) { |
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// Do not overwrite the primary key |
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continue; |
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} |
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if ($key === 'version') { |
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// Always use the current version |
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$value = $this->version; |
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} |
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$this->__set($key, $value); |
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} |
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$this->save(); |
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} |
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return $this; |
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} |
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/** |
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* Overloads ORM::delete() to delete all versioned entries of current object |
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* and the object itself |
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* |
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* @param integer id of the object you want to delete |
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* @return ORM |
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*/ |
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public function delete($id = null) |
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{ |
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if ($id === null) { |
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// Use the current object id |
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$id = $this->object[$this->primary_key]; |
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} |
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if ($status = parent::delete($id)) { |
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$this->db->where($this->foreign_key(), $id)->delete($this->table_name.'_versions'); |
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} |
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return $status; |
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} |
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} |
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vijinho /
kohana2-legacy
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This check looks for the generic type
arrayas a return type and suggests a more specific type. This type is inferred from the actual code.