_class_name = $class_name; } /** * Add a custom filter to the method chain specified on the * model class. This allows custom queries to be added * to models. The filter should take an instance of the * ORM wrapper as its first argument and return an instance * of the ORM wrapper. Any arguments passed to this method * after the name of the filter will be passed to the called * filter function as arguments after the ORM class. * * @return ORMWrapper */ public function filter() { $args = func_get_args(); $filter_function = array_shift($args); array_unshift($args, $this); if (method_exists($this->_class_name, $filter_function)) { return call_user_func_array(array($this->_class_name, $filter_function), $args); } } /** * Factory method, return an instance of this * class bound to the supplied table name. * * A repeat of content in parent::for_table, so that * created class is ORMWrapper, not ORM * * @param string $table_name * @param string $connection_name * @return ORMWrapper */ public static function for_table($table_name, $connection_name = parent::DEFAULT_CONNECTION) { self::_setup_db($connection_name); return new self($table_name, array(), $connection_name); } /** * Method to create an instance of the model class * associated with this wrapper and populate * it with the supplied Idiorm instance. * * @param ORM $orm * @return bool|Model */ protected function _create_model_instance($orm) { if ($orm === false) { return false; } $model = new $this->_class_name(); $model->set_orm($orm); return $model; } /** * Wrap Idiorm's find_one method to return * an instance of the class associated with * this wrapper instead of the raw ORM class. * * @param null|integer $id * @return Model */ public function find_one($id=null) { return $this->_create_model_instance(parent::find_one($id)); } /** * Wrap Idiorm's find_many method to return * an array of instances of the class associated * with this wrapper instead of the raw ORM class. * * @return Array */ public function find_many() { $results = parent::find_many(); foreach($results as $key => $result) { $results[$key] = $this->_create_model_instance($result); } return $results; } /** * Wrap Idiorm's create method to return an * empty instance of the class associated with * this wrapper instead of the raw ORM class. * * @return ORMWrapper|bool */ public function create($data=null) { return $this->_create_model_instance(parent::create($data)); } } /** * Model base class. Your model objects should extend * this class. A minimal subclass would look like: * * class Widget extends Model { * } * * * The methods documented below are magic methods that conform to PSR-1. * This documentation exposes these methods to doc generators and IDEs. * @see http://www.php-fig.org/psr/psr-1/ * * @method void setOrm($orm) * @method $this setExpr($property, $value = null) * @method bool isDirty($property) * @method bool isNew() * @method Array asArray() */ class Model { // Default ID column for all models. Can be overridden by adding // a public static _id_column property to your model classes. const DEFAULT_ID_COLUMN = 'id'; // Default foreign key suffix used by relationship methods const DEFAULT_FOREIGN_KEY_SUFFIX = '_id'; /** * Set a prefix for model names. This can be a namespace or any other * abitrary prefix such as the PEAR naming convention. * * @example Model::$auto_prefix_models = 'MyProject_MyModels_'; //PEAR * @example Model::$auto_prefix_models = '\MyProject\MyModels\'; //Namespaces * * @var string $auto_prefix_models */ public static $auto_prefix_models = null; /** * Set true to to ignore namespace information when computing table names * from class names. * * @example Model::$short_table_names = true; * @example Model::$short_table_names = false; // default * * @var bool $short_table_names */ public static $short_table_names = false; /** * The ORM instance used by this model * instance to communicate with the database. * * @var ORM $orm */ public $orm; /** * Retrieve the value of a static property on a class. If the * class or the property does not exist, returns the default * value supplied as the third argument (which defaults to null). * * @param string $class_name * @param string $property * @param null|string $default * @return string */ protected static function _get_static_property($class_name, $property, $default=null) { if (!class_exists($class_name) || !property_exists($class_name, $property)) { return $default; } $properties = get_class_vars($class_name); return $properties[$property]; } /** * Static method to get a table name given a class name. * If the supplied class has a public static property * named $_table, the value of this property will be * returned. * * If not, the class name will be converted using * the _class_name_to_table_name method method. * * If Model::$short_table_names == true or public static * property $_table_use_short_name == true then $class_name passed * to _class_name_to_table_name is stripped of namespace information. * * @param string $class_name * *@return string */ protected static function _get_table_name($class_name) { $specified_table_name = self::_get_static_property($class_name, '_table'); $use_short_class_name = self::_use_short_table_name($class_name); if ($use_short_class_name) { $exploded_class_name = explode('\\', $class_name); $class_name = end($exploded_class_name); } if (is_null($specified_table_name)) { return self::_class_name_to_table_name($class_name); } return $specified_table_name; } /** * Should short table names, disregarding class namespaces, be computed? * * $class_property overrides $global_option, unless $class_property is null * * @param string $class_name * @return bool */ protected static function _use_short_table_name($class_name) { $global_option = self::$short_table_names; $class_property = self::_get_static_property($class_name, '_table_use_short_name'); return is_null($class_property) ? $global_option : $class_property; } /** * Convert a namespace to the standard PEAR underscore format. * * Then convert a class name in CapWords to a table name in * lowercase_with_underscores. * * Finally strip doubled up underscores * * For example, CarTyre would be converted to car_tyre. And * Project\Models\CarTyre would be project_models_car_tyre. * * @param string $class_name * @return string */ protected static function _class_name_to_table_name($class_name) { return strtolower(preg_replace( array('/\\\\/', '/(?<=[a-z])([A-Z])/', '/__/'), array('_', '_$1', '_'), ltrim($class_name, '\\') )); } /** * Return the ID column name to use for this class. If it is * not set on the class, returns null. * * @param string $class_name * @return string|null */ protected static function _get_id_column_name($class_name) { return self::_get_static_property($class_name, '_id_column', self::DEFAULT_ID_COLUMN); } /** * Build a foreign key based on a table name. If the first argument * (the specified foreign key column name) is null, returns the second * argument (the name of the table) with the default foreign key column * suffix appended. * * @param string $specified_foreign_key_name * @param string $table_name * @return string */ protected static function _build_foreign_key_name($specified_foreign_key_name, $table_name) { if (!is_null($specified_foreign_key_name)) { return $specified_foreign_key_name; } return $table_name . self::DEFAULT_FOREIGN_KEY_SUFFIX; } /** * Factory method used to acquire instances of the given class. * The class name should be supplied as a string, and the class * should already have been loaded by PHP (or a suitable autoloader * should exist). This method actually returns a wrapped ORM object * which allows a database query to be built. The wrapped ORM object is * responsible for returning instances of the correct class when * its find_one or find_many methods are called. * * @param string $class_name * @param null|string $connection_name * @return ORMWrapper */ public static function factory($class_name, $connection_name = null) { $class_name = self::$auto_prefix_models . $class_name; $table_name = self::_get_table_name($class_name); if ($connection_name == null) { $connection_name = self::_get_static_property( $class_name, '_connection_name', ORMWrapper::DEFAULT_CONNECTION ); } $wrapper = ORMWrapper::for_table($table_name, $connection_name); $wrapper->set_class_name($class_name); $wrapper->use_id_column(self::_get_id_column_name($class_name)); return $wrapper; } /** * Internal method to construct the queries for both the has_one and * has_many methods. These two types of association are identical; the * only difference is whether find_one or find_many is used to complete * the method chain. * * @param string $associated_class_name * @param null|string $foreign_key_name * @param null|string $foreign_key_name_in_current_models_table * @param null|string $connection_name * @return ORMWrapper */ protected function _has_one_or_many($associated_class_name, $foreign_key_name=null, $foreign_key_name_in_current_models_table=null, $connection_name=null) { $base_table_name = self::_get_table_name(get_class($this)); $foreign_key_name = self::_build_foreign_key_name($foreign_key_name, $base_table_name); $where_value = ''; //Value of foreign_table.{$foreign_key_name} we're //looking for. Where foreign_table is the actual //database table in the associated model. if(is_null($foreign_key_name_in_current_models_table)) { //Match foreign_table.{$foreign_key_name} with the value of //{$this->_table}.{$this->id()} $where_value = $this->id(); } else { //Match foreign_table.{$foreign_key_name} with the value of //{$this->_table}.{$foreign_key_name_in_current_models_table} $where_value = $this->$foreign_key_name_in_current_models_table; } return self::factory($associated_class_name, $connection_name)->where($foreign_key_name, $where_value); } /** * Helper method to manage one-to-one relations where the foreign * key is on the associated table. * * @param string $associated_class_name * @param null|string $foreign_key_name * @param null|string $foreign_key_name_in_current_models_table * @param null|string $connection_name * @return ORMWrapper */ protected function has_one($associated_class_name, $foreign_key_name=null, $foreign_key_name_in_current_models_table=null, $connection_name=null) { return $this->_has_one_or_many($associated_class_name, $foreign_key_name, $foreign_key_name_in_current_models_table, $connection_name); } /** * Helper method to manage one-to-many relations where the foreign * key is on the associated table. * * @param string $associated_class_name * @param null|string $foreign_key_name * @param null|string $foreign_key_name_in_current_models_table * @param null|string $connection_name * @return ORMWrapper */ protected function has_many($associated_class_name, $foreign_key_name=null, $foreign_key_name_in_current_models_table=null, $connection_name=null) { return $this->_has_one_or_many($associated_class_name, $foreign_key_name, $foreign_key_name_in_current_models_table, $connection_name); } /** * Helper method to manage one-to-one and one-to-many relations where * the foreign key is on the base table. * * @param string $associated_class_name * @param null|string $foreign_key_name * @param null|string $foreign_key_name_in_associated_models_table * @param null|string $connection_name * @return $this|null */ protected function belongs_to($associated_class_name, $foreign_key_name=null, $foreign_key_name_in_associated_models_table=null, $connection_name=null) { $associated_table_name = self::_get_table_name(self::$auto_prefix_models . $associated_class_name); $foreign_key_name = self::_build_foreign_key_name($foreign_key_name, $associated_table_name); $associated_object_id = $this->$foreign_key_name; $desired_record = null; if( is_null($foreign_key_name_in_associated_models_table) ) { //"{$associated_table_name}.primary_key = {$associated_object_id}" //NOTE: primary_key is a placeholder for the actual primary key column's name //in $associated_table_name $desired_record = self::factory($associated_class_name, $connection_name)->where_id_is($associated_object_id); } else { //"{$associated_table_name}.{$foreign_key_name_in_associated_models_table} = {$associated_object_id}" $desired_record = self::factory($associated_class_name, $connection_name)->where($foreign_key_name_in_associated_models_table, $associated_object_id); } return $desired_record; } /** * Helper method to manage many-to-many relationships via an intermediate model. See * README for a full explanation of the parameters. * * @param string $associated_class_name * @param null|string $join_class_name * @param null|string $key_to_base_table * @param null|string $key_to_associated_table * @param null|string $key_in_base_table * @param null|string $key_in_associated_table * @param null|string $connection_name * @return ORMWrapper */ protected function has_many_through($associated_class_name, $join_class_name=null, $key_to_base_table=null, $key_to_associated_table=null, $key_in_base_table=null, $key_in_associated_table=null, $connection_name=null) { $base_class_name = get_class($this); // The class name of the join model, if not supplied, is // formed by concatenating the names of the base class // and the associated class, in alphabetical order. if (is_null($join_class_name)) { $base_model = explode('\\', $base_class_name); $base_model_name = end($base_model); if (substr($base_model_name, 0, strlen(self::$auto_prefix_models)) == self::$auto_prefix_models) { $base_model_name = substr($base_model_name, strlen(self::$auto_prefix_models), strlen($base_model_name)); } // Paris wasn't checking the name settings for the associated class. $associated_model = explode('\\', $associated_class_name); $associated_model_name = end($associated_model); if (substr($associated_model_name, 0, strlen(self::$auto_prefix_models)) == self::$auto_prefix_models) { $associated_model_name = substr($associated_model_name, strlen(self::$auto_prefix_models), strlen($associated_model_name)); } $class_names = array($base_model_name, $associated_model_name); sort($class_names, SORT_STRING); $join_class_name = implode('', $class_names); } // Get table names for each class $base_table_name = self::_get_table_name($base_class_name); $associated_table_name = self::_get_table_name(self::$auto_prefix_models . $associated_class_name); $join_table_name = self::_get_table_name(self::$auto_prefix_models . $join_class_name); // Get ID column names $base_table_id_column = (is_null($key_in_base_table)) ? self::_get_id_column_name($base_class_name) : $key_in_base_table; $associated_table_id_column = (is_null($key_in_associated_table)) ? self::_get_id_column_name(self::$auto_prefix_models . $associated_class_name) : $key_in_associated_table; // Get the column names for each side of the join table $key_to_base_table = self::_build_foreign_key_name($key_to_base_table, $base_table_name); $key_to_associated_table = self::_build_foreign_key_name($key_to_associated_table, $associated_table_name); /* " SELECT {$associated_table_name}.* FROM {$associated_table_name} JOIN {$join_table_name} ON {$associated_table_name}.{$associated_table_id_column} = {$join_table_name}.{$key_to_associated_table} WHERE {$join_table_name}.{$key_to_base_table} = {$this->$base_table_id_column} ;" */ return self::factory($associated_class_name, $connection_name) ->select("{$associated_table_name}.*") ->join($join_table_name, array("{$associated_table_name}.{$associated_table_id_column}", '=', "{$join_table_name}.{$key_to_associated_table}")) ->where("{$join_table_name}.{$key_to_base_table}", $this->$base_table_id_column); ; } /** * Set the wrapped ORM instance associated with this Model instance. * * @param ORM $orm * @return void */ public function set_orm($orm) { $this->orm = $orm; } /** * Magic getter method, allows $model->property access to data. * * @param string $property * @return null|string */ public function __get($property) { return $this->orm->get($property); } /** * Magic setter method, allows $model->property = 'value' access to data. * * @param string $property * @param string $value * @return void */ public function __set($property, $value) { $this->orm->set($property, $value); } /** * Magic unset method, allows unset($model->property) * * @param string $property * @return void */ public function __unset($property) { $this->orm->__unset($property); } /** * Magic isset method, allows isset($model->property) to work correctly. * * @param string $property * @return bool */ public function __isset($property) { return $this->orm->__isset($property); } /** * Getter method, allows $model->get('property') access to data * * @param string $property * @return string */ public function get($property) { return $this->orm->get($property); } /** * Setter method, allows $model->set('property', 'value') access to data. * * @param string|array $property * @param string|null $value * @return Model */ public function set($property, $value = null) { $this->orm->set($property, $value); return $this; } /** * Setter method, allows $model->set_expr('property', 'value') access to data. * * @param string|array $property * @param string|null $value * @return Model */ public function set_expr($property, $value = null) { $this->orm->set_expr($property, $value); return $this; } /** * Check whether the given field has changed since the object was created or saved * * @param string $property * @return bool */ public function is_dirty($property) { return $this->orm->is_dirty($property); } /** * Check whether the model was the result of a call to create() or not * * @return bool */ public function is_new() { return $this->orm->is_new(); } /** * Wrapper for Idiorm's as_array method. * * @return Array */ public function as_array() { $args = func_get_args(); return call_user_func_array(array($this->orm, 'as_array'), $args); } /** * Save the data associated with this model instance to the database. * * @return null */ public function save() { return $this->orm->save(); } /** * Delete the database row associated with this model instance. * * @return null */ public function delete() { return $this->orm->delete(); } /** * Get the database ID of this model instance. * * @return integer */ public function id() { return $this->orm->id(); } /** * Hydrate this model instance with an associative array of data. * WARNING: The keys in the array MUST match with columns in the * corresponding database table. If any keys are supplied which * do not match up with columns, the database will throw an error. * * @param Array $data * @return void */ public function hydrate($data) { $this->orm->hydrate($data)->force_all_dirty(); } /** * Calls static methods directly on the ORMWrapper * * @param string $method * @param Array $parameters * @return Array */ public static function __callStatic($method, $parameters) { if(function_exists('get_called_class')) { $model = self::factory(get_called_class()); return call_user_func_array(array($model, $method), $parameters); } } /** * Magic method to capture calls to undefined class methods. * In this case we are attempting to convert camel case formatted * methods into underscore formatted methods. * * This allows us to call methods using camel case and remain * backwards compatible. * * @param string $name * @param array $arguments * @throws ParisMethodMissingException * @return bool|ORMWrapper */ public function __call($name, $arguments) { $method = strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $name)); if (method_exists($this, $method)) { return call_user_func_array(array($this, $method), $arguments); } else { throw new ParisMethodMissingException("Method $name() does not exist in class " . get_class($this)); } } } class ParisMethodMissingException extends Exception {}