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<?php defined('SYSPATH') OR die('No direct script access.'); |
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/** |
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* Jam Model |
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* |
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* Jam_Model is the class all models must extend. It handles |
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* various CRUD operations and relationships to other models. |
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* |
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* @package Jam |
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* @category Models |
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* @author Ivan Kerin |
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* @copyright (c) 2011-2012 Despark Ltd. |
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* @license http://www.opensource.org/licenses/isc-license.txt |
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*/ |
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abstract class Kohana_Jam_Model extends Jam_Validated { |
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/** |
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* @var boolean Whether or not the model is loaded |
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*/ |
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protected $_loaded = FALSE; |
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/** |
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* @var boolean Whether or not the model is saved |
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*/ |
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protected $_saved = FALSE; |
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/** |
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* @var boolean Whether or not the model is saving |
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*/ |
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protected $_is_saving = FALSE; |
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/** |
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* @var Boolean A flag that indicates a record has been deleted from the database |
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*/ |
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protected $_deleted = FALSE; |
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/** |
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* Constructor. |
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* |
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* A key can be passed to automatically load a model by its |
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* unique key. |
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* |
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* @param mixed|null $key |
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*/ |
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public function __construct($meta_name = NULL) |
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{ |
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parent::__construct($meta_name); |
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$this->meta()->events()->trigger('model.before_construct', $this); |
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// Copy over the defaults into the original data. |
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$this->_original = $this->meta()->defaults(); |
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$this->meta()->events()->trigger('model.after_construct', $this); |
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} |
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/** |
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* Gets the value for a field. |
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* |
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* @param string $name The field's name |
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* @return array|mixed |
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*/ |
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public function get($name) |
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{ |
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if ($association = $this->meta()->association($name)) |
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{ |
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$name = $association->name; |
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return $association->get($this, Arr::get($this->_changed, $name), $this->changed($name)); |
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} |
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return parent::get($name); |
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} |
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public function __isset($name) |
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{ |
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return ($this->meta()->association($name) OR parent::__isset($name)); |
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} |
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/** |
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* Sets the value of a field. |
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* |
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* You can pass an array of key => value pairs |
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* to set multiple fields at the same time: |
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* |
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* $model->set(array( |
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* 'field1' => 'value', |
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* 'field2' => 'value', |
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* .... |
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* )); |
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* |
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* @param array|string $values |
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* @param mixed|null $value |
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* @return $this |
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*/ |
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public function set($values, $value = NULL) |
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{ |
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// Accept set('name', 'value'); |
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if ( ! is_array($values)) |
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{ |
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$values = array($values => $value); |
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} |
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foreach ($values as $key => & $value) |
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{ |
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if ($association = $this->meta()->association($key)) |
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{ |
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if ($association->readonly) |
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throw new Kohana_Exception('Cannot change the value of :name, its readonly', array(':name' => $association->name)); |
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$this->_changed[$association->name] = $association->set($this, $value, TRUE); |
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unset($this->_retrieved[$association->name]); |
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unset($values[$key]); |
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} |
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} |
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parent::set($values); |
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if ($this->_saved AND $this->changed()) |
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{ |
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$this->_saved = FALSE; |
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} |
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return $this; |
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} |
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/** |
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* Clears the object and loads an array of values into the object. |
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* |
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* This should only be used for setting from database results |
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* since the model declares itself as saved and loaded after. |
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* |
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* @param Jam_Model|array $values |
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* @return $this |
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*/ |
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public function load_fields($values) |
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{ |
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// Clear the object |
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$this->clear(); |
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$this->meta()->events()->trigger('model.before_load', $this); |
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$this->_loaded = TRUE; |
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$columns = array(); |
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foreach ($this->meta()->fields() as $key => $field) |
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{ |
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$columns[$field->column] = $field; |
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} |
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foreach ($values as $key => $value) |
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{ |
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if ($field = $this->meta()->field($key)) |
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{ |
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$this->_original[$field->name] = $field->set($this, $value, FALSE); |
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} |
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elseif (isset($columns[$key])) |
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{ |
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$field = $columns[$key]; |
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$this->_original[$field->name] = $field->set($this, $value, FALSE); |
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} |
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elseif ($association = $this->meta()->association($key)) |
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{ |
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$association_value = $association->load_fields($this, $value, FALSE); |
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if (is_object($association_value)) |
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{ |
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$this->_retrieved[$association->name] = $association->load_fields($this, $value, FALSE); |
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} |
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else |
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{ |
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$this->_changed[$association->name] = $association_value; |
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} |
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} |
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else |
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{ |
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$this->_unmapped[$key] = $value; |
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} |
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} |
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// Model is now saved and loaded |
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$this->_saved = TRUE; |
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$this->meta()->events()->trigger('model.after_load', $this); |
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return $this; |
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} |
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/** |
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* Validates the current model's data |
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* |
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* @throws Jam_Exception_Validation |
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* @param Validation|null $extra_validation |
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* @return bool |
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*/ |
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public function check($force = FALSE) |
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{ |
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$this->_move_retrieved_to_changed(); |
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return parent::check( ! $this->loaded() OR $force); |
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} |
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protected function _move_retrieved_to_changed() |
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{ |
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foreach ($this->_retrieved as $column => $value) |
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{ |
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if ($value instanceof Jam_Array_Association AND $value->changed()) |
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{ |
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$this->_changed[$column] = $value; |
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} |
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} |
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} |
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public function update_fields($values, $value = NULL) |
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{ |
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if ( ! $this->loaded()) |
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throw new Kohana_Exception('Model must be loaded to use update_fields method'); |
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if ( ! is_array($values)) |
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{ |
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$values = array($values => $value); |
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} |
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$this->set($values); |
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Jam::update($this) |
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->where_key($this->id()) |
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->set($values) |
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->execute(); |
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return $this; |
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} |
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/** |
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* Creates or updates the current record. |
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* |
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* @param bool|null $validate |
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* @return $this |
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* @throws Kohana_Exception |
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* @throws Jam_Exception_Validation |
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*/ |
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public function save($validate = NULL) |
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{ |
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if ($this->_is_saving) |
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throw new Kohana_Exception("Cannot save a model that is already in the process of saving"); |
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$key = $this->_original[$this->meta()->primary_key()]; |
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// Run validation |
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if ($validate !== FALSE && !$this->check()) |
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{ |
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throw new Jam_Exception_Validation('There was an error validating the :model: :errors', $this); |
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} |
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$this->_is_saving = TRUE; |
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// These will be processed later |
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$values = $defaults = array(); |
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if ($this->meta()->events()->trigger('model.before_save', $this, array($this->_changed)) === FALSE) |
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{ |
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return $this; |
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} |
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// Trigger callbacks and ensure we should proceed |
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$event_type = $key ? 'update' : 'create'; |
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if ($this->meta()->events()->trigger('model.before_'.$event_type, $this, array($this->_changed)) === FALSE) |
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{ |
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return $this; |
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} |
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$this->_move_retrieved_to_changed(); |
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// Iterate through all fields in original in case any unchanged fields |
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// have convert() behavior like timestamp updating... |
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// |
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foreach (array_merge($this->_original, $this->_changed) as $column => $value) |
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{ |
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if ($field = $this->meta()->field($column)) |
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{ |
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// Only save in_db values |
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if ($field->in_db) |
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{ |
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// See if field wants to alter the value on save() |
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$value = $field->convert($this, $value, $key); |
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// Only set the value to be saved if it's changed from the original |
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if ($value !== $this->_original[$column]) |
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{ |
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$values[$field->column] = $value; |
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} |
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// Or if we're INSERTing and we need to set the defaults for the first time |
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elseif ( ! $key AND ( ! $this->changed($field->name) OR $field->default === $value) AND ! $field->primary) |
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{ |
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$defaults[$field->column] = $field->default; |
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} |
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} |
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} |
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} |
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// If we have a key, we're updating |
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if ($key) |
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{ |
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// Do we even have to update anything in the row? |
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if ($values) |
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{ |
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Jam::update($this) |
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->where_key($key) |
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->set($values) |
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->execute(); |
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} |
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} |
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else |
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{ |
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$insert_values = array_merge($defaults, $values); |
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list($id) = Jam::insert($this) |
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->columns(array_keys($insert_values)) |
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->values(array_values($insert_values)) |
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->execute(); |
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// Gotta make sure to set this |
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$key = $values[$this->meta()->primary_key()] = $id; |
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} |
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// Re-set any saved values; they may have changed |
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$this->set($values); |
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$this->_loaded = $this->_saved = TRUE; |
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$this->meta()->events()->trigger('model.after_save', $this, array($this->_changed, $event_type)); |
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$this->meta()->events()->trigger('model.after_'.$event_type, $this, array($this->_changed)); |
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// Set the changed data back as original |
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$this->_original = array_merge($this->_original, $this->_changed); |
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$this->_changed = array(); |
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foreach ($this->_retrieved as $name => $retrieved) |
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{ |
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if (($association = $this->meta()->association($name))) |
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{ |
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if ($association instanceof Jam_Association_Collection) |
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{ |
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$retrieved->clear_changed(); |
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} |
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} |
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elseif (($field = $this->meta()->field($name)) AND $field->in_db) |
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{ |
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unset($this->_retrieved[$name]); |
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} |
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} |
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$this->_is_saving = FALSE; |
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return $this; |
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} |
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/** |
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* Deletes a single record. |
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* |
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* @return boolean |
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**/ |
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9 |
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public function delete() |
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{ |
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9 |
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$result = FALSE; |
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// Are we loaded? Then we're just deleting this record |
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9 |
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if ($this->_loaded) |
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{ |
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9 |
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$key = $this->_original[$this->meta()->primary_key()]; |
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9 |
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if (($result = $this->meta()->events()->trigger('model.before_delete', $this)) !== FALSE) |
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{ |
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9 |
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$result = Jam::delete($this)->where_key($key)->execute(); |
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} |
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} |
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|
|
381
|
|
|
// Trigger the after-delete |
382
|
9 |
|
$this->meta()->events()->trigger('model.after_delete', $this, array($result)); |
383
|
|
|
|
384
|
|
|
// Clear the object so it appears deleted anyway |
385
|
9 |
|
$this->clear(); |
386
|
|
|
|
387
|
|
|
// Set the flag indicatig the model has been successfully deleted |
388
|
9 |
|
$this->_deleted = $result; |
|
|
|
|
389
|
|
|
|
390
|
9 |
|
return $this->_deleted; |
391
|
|
|
} |
392
|
|
|
|
393
|
|
|
/** |
394
|
|
|
* Removes any changes made to a model. |
395
|
|
|
* |
396
|
|
|
* This method only works on loaded models. |
397
|
|
|
* |
398
|
|
|
* @return $this |
399
|
|
|
*/ |
400
|
|
|
public function revert() |
401
|
|
|
{ |
402
|
|
|
if ($this->_loaded) |
403
|
|
|
{ |
404
|
|
|
$this->_loaded = |
405
|
|
|
$this->_saved = TRUE; |
406
|
|
|
|
407
|
|
|
parent::revert(); |
408
|
|
|
} |
409
|
|
|
|
410
|
|
|
return $this; |
411
|
|
|
} |
412
|
|
|
|
413
|
|
|
/** |
414
|
|
|
* Sets a model to its original state, as if freshly instantiated |
415
|
|
|
* |
416
|
|
|
* @return $this |
417
|
|
|
*/ |
418
|
196 |
|
public function clear() |
419
|
|
|
{ |
420
|
196 |
|
$this->_loaded = |
421
|
196 |
|
$this->_saved = FALSE; |
422
|
|
|
|
423
|
196 |
|
parent::clear(); |
424
|
|
|
|
425
|
196 |
|
return $this; |
426
|
|
|
} |
427
|
|
|
|
428
|
1 |
|
public function get_insist($attribute_name) |
429
|
|
|
{ |
430
|
1 |
|
$attribute = $this->__get($attribute_name); |
431
|
|
|
|
432
|
1 |
|
if ($attribute === NULL) |
433
|
1 |
|
throw new Jam_Exception_Notfound('The association :name was empty on :model_name', NULL, array( |
434
|
1 |
|
':name' => $attribute_name, |
435
|
1 |
|
':model_name' => (string) $this, |
436
|
|
|
)); |
437
|
|
|
|
438
|
1 |
|
return $attribute; |
439
|
|
|
} |
440
|
|
|
|
441
|
1 |
|
public function build($association_name, array $attributes = array()) |
442
|
|
|
{ |
443
|
1 |
|
$association = $this->meta()->association($association_name); |
444
|
|
|
|
445
|
1 |
|
if ( ! $association) |
446
|
|
|
throw new Kohana_Exception('There is no association named :association_name on model :model', array(':association_name' => $association_name, ':model' => $this->meta()->model())); |
447
|
|
|
|
448
|
1 |
|
if ($association instanceof Jam_Association_Collection) |
449
|
|
|
throw new Kohana_Exception(':association_name association must not be a collection on model :model', array(':association_name' => $association_name, ':model' => $this->meta()->model())); |
450
|
|
|
|
451
|
1 |
|
$item = $association->build($this, $attributes); |
452
|
|
|
|
453
|
1 |
|
$this->set($association_name, $item); |
454
|
|
|
|
455
|
1 |
|
return $item; |
456
|
|
|
} |
457
|
|
|
|
458
|
|
|
/** |
459
|
|
|
* Returns whether or not the model is loaded |
460
|
|
|
* |
461
|
|
|
* @return boolean |
462
|
|
|
*/ |
463
|
91 |
|
public function loaded() |
464
|
|
|
{ |
465
|
91 |
|
return $this->_loaded; |
466
|
|
|
} |
467
|
|
|
|
468
|
|
|
public function loaded_insist() |
469
|
|
|
{ |
470
|
|
|
if ( ! $this->loaded()) |
471
|
|
|
throw new Jam_Exception_NotLoaded("Model not loaded", $this); |
472
|
|
|
|
473
|
|
|
return $this; |
474
|
|
|
} |
475
|
|
|
|
476
|
|
|
/** |
477
|
|
|
* Whether or not the model is saved |
478
|
|
|
* |
479
|
|
|
* @return boolean |
480
|
|
|
*/ |
481
|
10 |
|
public function saved() |
482
|
|
|
{ |
483
|
10 |
|
return $this->_saved; |
484
|
|
|
} |
485
|
|
|
|
486
|
|
|
/** |
487
|
|
|
* Whether or not the model is in the process of being saved |
488
|
|
|
* |
489
|
|
|
* @return boolean |
490
|
|
|
*/ |
491
|
3 |
|
public function is_saving() |
492
|
|
|
{ |
493
|
3 |
|
return $this->_is_saving; |
494
|
|
|
} |
495
|
|
|
|
496
|
|
|
/** |
497
|
|
|
* Whether or not the model is deleted |
498
|
|
|
* |
499
|
|
|
* @return boolean |
500
|
|
|
*/ |
501
|
|
|
public function deleted() |
502
|
|
|
{ |
503
|
|
|
return $this->_deleted; |
504
|
|
|
} |
505
|
|
|
|
506
|
|
|
/** |
507
|
|
|
* Build a new model object based on the current one, but without an ID, so it can be saved as a new object |
508
|
|
|
* @return Jam_Model |
509
|
|
|
*/ |
510
|
1 |
|
public function duplicate() |
511
|
|
|
{ |
512
|
1 |
|
$fields = $this->as_array(); |
513
|
|
|
|
514
|
1 |
|
unset($fields[$this->meta()->primary_key()]); |
515
|
|
|
|
516
|
1 |
|
return Jam::build($this->meta()->model(), $fields); |
517
|
|
|
} |
518
|
|
|
|
519
|
|
|
/** |
520
|
|
|
* Returns a string representation of the model in the |
521
|
|
|
* form of `Model_Name (id)` or `Model_Name (NULL)` if |
522
|
|
|
* the model is not loaded. |
523
|
|
|
* |
524
|
|
|
* This is designed to be useful for debugging. |
525
|
|
|
* |
526
|
|
|
* @return string |
527
|
|
|
*/ |
528
|
4 |
|
public function __toString() |
529
|
|
|
{ |
530
|
4 |
|
return (string) get_class($this).'('.($this->loaded() ? $this->id() : 'NULL').')'; |
531
|
|
|
} |
532
|
|
|
|
533
|
754 |
|
public function serialize() |
534
|
|
|
{ |
535
|
754 |
|
$this->_move_retrieved_to_changed(); |
536
|
|
|
|
537
|
754 |
|
return serialize(array( |
538
|
754 |
|
'original' => $this->_original, |
539
|
754 |
|
'changed' => $this->_changed, |
540
|
754 |
|
'unmapped' => $this->_unmapped, |
541
|
754 |
|
'saved' => $this->_saved, |
542
|
754 |
|
'loaded' => $this->_loaded, |
543
|
754 |
|
'deleted' => $this->_deleted, |
544
|
|
|
)); |
545
|
|
|
} |
546
|
|
|
|
547
|
754 |
|
public function unserialize($data) |
548
|
|
|
{ |
549
|
754 |
|
$data = unserialize($data); |
550
|
|
|
|
551
|
754 |
|
$this->_meta = Jam::meta($this); |
552
|
754 |
|
$this->_original = Arr::merge($this->meta()->defaults(), $data['original']); |
553
|
754 |
|
$this->_changed = $data['changed']; |
554
|
754 |
|
$this->_unmapped = $data['unmapped']; |
555
|
754 |
|
$this->_saved = $data['saved']; |
556
|
754 |
|
$this->_loaded = $data['loaded']; |
557
|
754 |
|
$this->_deleted = $data['deleted']; |
558
|
|
|
|
559
|
754 |
|
foreach ($this->_changed as $name => $attribute) |
560
|
|
|
{ |
561
|
754 |
|
$association = $this->meta()->association($name); |
562
|
754 |
|
if ($association AND $association instanceof Jam_Association_Collection) |
563
|
|
|
{ |
564
|
754 |
|
$association->assign_internals($this, $attribute); |
565
|
|
|
} |
566
|
|
|
} |
567
|
754 |
|
} |
568
|
|
|
} |
569
|
|
|
|
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.