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* @author Carsten Brandt
* @since 2.0 */ interface ActiveRecordInterface extends StaticInstanceInterface { /** * Returns the primary key **name(s)** for this AR class. * * Note that an array should be returned even when the record only has a single primary key. * * For the primary key **value** see [[getPrimaryKey()]] instead. * * @return string[] the primary key name(s) for this AR class. */ public static function primaryKey(); /** * Returns the list of all attribute names of the record. * @return array list of attribute names. */ public function attributes(); /** * Returns the named attribute value. * If this record is the result of a query and the attribute is not loaded, * `null` will be returned. * @param string $name the attribute name * @return mixed the attribute value. `null` if the attribute is not set or does not exist. * @see hasAttribute() */ public function getAttribute($name); /** * Sets the named attribute value. * @param string $name the attribute name. * @param mixed $value the attribute value. * @see hasAttribute() */ public function setAttribute($name, $value); /** * Returns a value indicating whether the record has an attribute with the specified name. * @param string $name the name of the attribute * @return bool whether the record has an attribute with the specified name. */ public function hasAttribute($name); /** * Returns the primary key value(s). * @param bool $asArray whether to return the primary key value as an array. If true, * the return value will be an array with attribute names as keys and attribute values as values. * Note that for composite primary keys, an array will always be returned regardless of this parameter value. * @return mixed the primary key value. An array (attribute name => attribute value) is returned if the primary key * is composite or `$asArray` is true. A string is returned otherwise (`null` will be returned if * the key value is `null`). */ public function getPrimaryKey($asArray = false); /** * Returns the old primary key value(s). * This refers to the primary key value that is populated into the record * after executing a find method (e.g. find(), findOne()). * The value remains unchanged even if the primary key attribute is manually assigned with a different value. * @param bool $asArray whether to return the primary key value as an array. If true, * the return value will be an array with column name as key and column value as value. * If this is `false` (default), a scalar value will be returned for non-composite primary key. * @return mixed the old primary key value. An array (column name => column value) is returned if the primary key * is composite or `$asArray` is true. A string is returned otherwise (`null` will be returned if * the key value is `null`). */ public function getOldPrimaryKey($asArray = false); /** * Returns a value indicating whether the given set of attributes represents the primary key for this model. * @param array $keys the set of attributes to check * @return bool whether the given set of attributes represents the primary key for this model */ public static function isPrimaryKey($keys); /** * Creates an [[ActiveQueryInterface]] instance for query purpose. * * The returned [[ActiveQueryInterface]] instance can be further customized by calling * methods defined in [[ActiveQueryInterface]] before `one()` or `all()` is called to return * populated ActiveRecord instances. For example, * * ```php * // find the customer whose ID is 1 * $customer = Customer::find()->where(['id' => 1])->one(); * * // find all active customers and order them by their age: * $customers = Customer::find() * ->where(['status' => 1]) * ->orderBy('age') * ->all(); * ``` * * This method is also called by [[BaseActiveRecord::hasOne()]] and [[BaseActiveRecord::hasMany()]] to * create a relational query. * * You may override this method to return a customized query. For example, * * ```php * class Customer extends ActiveRecord * { * public static function find() * { * // use CustomerQuery instead of the default ActiveQuery * return new CustomerQuery(get_called_class()); * } * } * ``` * * The following code shows how to apply a default condition for all queries: * * ```php * class Customer extends ActiveRecord * { * public static function find() * { * return parent::find()->where(['deleted' => false]); * } * } * * // Use andWhere()/orWhere() to apply the default condition * // SELECT FROM customer WHERE `deleted`=:deleted AND age>30 * $customers = Customer::find()->andWhere('age>30')->all(); * * // Use where() to ignore the default condition * // SELECT FROM customer WHERE age>30 * $customers = Customer::find()->where('age>30')->all(); * ``` * * @return ActiveQueryInterface the newly created [[ActiveQueryInterface]] instance. */ public static function find(); /** * Returns a single active record model instance by a primary key or an array of column values. * * The method accepts: * * - a scalar value (integer or string): query by a single primary key value and return the * corresponding record (or `null` if not found). * - a non-associative array: query by a list of primary key values and return the * first record (or `null` if not found). * - an associative array of name-value pairs: query by a set of attribute values and return a single record * matching all of them (or `null` if not found). Note that `['id' => 1, 2]` is treated as a non-associative array. * Column names are limited to current records table columns for SQL DBMS, or filtered otherwise to be limited to simple filter conditions. * - a yii\db\Expression: The expression will be used directly. (@since 2.0.37) * * That this method will automatically call the `one()` method and return an [[ActiveRecordInterface|ActiveRecord]] * instance. * * > Note: As this is a short-hand method only, using more complex conditions, like ['!=', 'id', 1] will not work. * > If you need to specify more complex conditions, use [[find()]] in combination with [[ActiveQuery::where()|where()]] instead. * * See the following code for usage examples: * * ```php * // find a single customer whose primary key value is 10 * $customer = Customer::findOne(10); * * // the above code is equivalent to: * $customer = Customer::find()->where(['id' => 10])->one(); * * // find the customers whose primary key value is 10, 11 or 12. * $customers = Customer::findOne([10, 11, 12]); * * // the above code is equivalent to: * $customers = Customer::find()->where(['id' => [10, 11, 12]])->one(); * * // find the first customer whose age is 30 and whose status is 1 * $customer = Customer::findOne(['age' => 30, 'status' => 1]); * * // the above code is equivalent to: * $customer = Customer::find()->where(['age' => 30, 'status' => 1])->one(); * ``` * * If you need to pass user input to this method, make sure the input value is scalar or in case of * array condition, make sure the array structure can not be changed from the outside: * * ```php * // yii\web\Controller ensures that $id is scalar * public function actionView($id) * { * $model = Post::findOne($id); * // ... * } * * // explicitly specifying the colum to search, passing a scalar or array here will always result in finding a single record * $model = Post::findOne(['id' => Yii::$app->request->get('id')]); * * // do NOT use the following code! it is possible to inject an array condition to filter by arbitrary column values! * $model = Post::findOne(Yii::$app->request->get('id')); * ``` * * @param mixed $condition primary key value or a set of column values * @return static|null ActiveRecord instance matching the condition, or `null` if nothing matches. */ public static function findOne($condition); /** * Returns a list of active record models that match the specified primary key value(s) or a set of column values. * * The method accepts: * * - a scalar value (integer or string): query by a single primary key value and return an array containing the * corresponding record (or an empty array if not found). * - a non-associative array: query by a list of primary key values and return the * corresponding records (or an empty array if none was found). * Note that an empty condition will result in an empty result as it will be interpreted as a search for * primary keys and not an empty `WHERE` condition. * - an associative array of name-value pairs: query by a set of attribute values and return an array of records * matching all of them (or an empty array if none was found). Note that `['id' => 1, 2]` is treated as * a non-associative array. * Column names are limited to current records table columns for SQL DBMS, or filtered otherwise to be limted to simple filter conditions. * - a yii\db\Expression: The expression will be used directly. (@since 2.0.37) * * This method will automatically call the `all()` method and return an array of [[ActiveRecordInterface|ActiveRecord]] * instances. * * > Note: As this is a short-hand method only, using more complex conditions, like ['!=', 'id', 1] will not work. * > If you need to specify more complex conditions, use [[find()]] in combination with [[ActiveQuery::where()|where()]] instead. * * See the following code for usage examples: * * ```php * // find the customers whose primary key value is 10 * $customers = Customer::findAll(10); * * // the above code is equivalent to: * $customers = Customer::find()->where(['id' => 10])->all(); * * // find the customers whose primary key value is 10, 11 or 12. * $customers = Customer::findAll([10, 11, 12]); * * // the above code is equivalent to: * $customers = Customer::find()->where(['id' => [10, 11, 12]])->all(); * * // find customers whose age is 30 and whose status is 1 * $customers = Customer::findAll(['age' => 30, 'status' => 1]); * * // the above code is equivalent to: * $customers = Customer::find()->where(['age' => 30, 'status' => 1])->all(); * ``` * * If you need to pass user input to this method, make sure the input value is scalar or in case of * array condition, make sure the array structure can not be changed from the outside: * * ```php * // yii\web\Controller ensures that $id is scalar * public function actionView($id) * { * $model = Post::findOne($id); * // ... * } * * // explicitly specifying the colum to search, passing a scalar or array here will always result in finding a single record * $model = Post::findOne(['id' => Yii::$app->request->get('id')]); * * // do NOT use the following code! it is possible to inject an array condition to filter by arbitrary column values! * $model = Post::findOne(Yii::$app->request->get('id')); * ``` * * @param mixed $condition primary key value or a set of column values * @return array an array of ActiveRecord instance, or an empty array if nothing matches. */ public static function findAll($condition); /** * Updates records using the provided attribute values and conditions. * * For example, to change the status to be 1 for all customers whose status is 2: * * ```php * Customer::updateAll(['status' => 1], ['status' => '2']); * ``` * * @param array $attributes attribute values (name-value pairs) to be saved for the record. * Unlike [[update()]] these are not going to be validated. * @param mixed $condition the condition that matches the records that should get updated. * Please refer to [[QueryInterface::where()]] on how to specify this parameter. * An empty condition will match all records. * @return int the number of rows updated */ public static function updateAll($attributes, $condition = null); /** * Deletes records using the provided conditions. * WARNING: If you do not specify any condition, this method will delete ALL rows in the table. * * For example, to delete all customers whose status is 3: * * ```php * Customer::deleteAll([status = 3]); * ``` * * @param array|null $condition the condition that matches the records that should get deleted. * Please refer to [[QueryInterface::where()]] on how to specify this parameter. * An empty condition will match all records. * @return int the number of rows deleted */ public static function deleteAll($condition = null); /** * Saves the current record. * * This method will call [[insert()]] when [[getIsNewRecord()|isNewRecord]] is true, or [[update()]] * when [[getIsNewRecord()|isNewRecord]] is false. * * For example, to save a customer record: * * ```php * $customer = new Customer; // or $customer = Customer::findOne($id); * $customer->name = $name; * $customer->email = $email; * $customer->save(); * ``` * * @param bool $runValidation whether to perform validation (calling [[\yii\base\Model::validate()|validate()]]) * before saving the record. Defaults to `true`. If the validation fails, the record * will not be saved to the database and this method will return `false`. * @param array|null $attributeNames list of attribute names that need to be saved. Defaults to `null`, * meaning all attributes that are loaded from DB will be saved. * @return bool whether the saving succeeded (i.e. no validation errors occurred). */ public function save($runValidation = true, $attributeNames = null); /** * Inserts the record into the database using the attribute values of this record. * * Usage example: * * ```php * $customer = new Customer; * $customer->name = $name; * $customer->email = $email; * $customer->insert(); * ``` * * @param bool $runValidation whether to perform validation (calling [[\yii\base\Model::validate()|validate()]]) * before saving the record. Defaults to `true`. If the validation fails, the record * will not be saved to the database and this method will return `false`. * @param array|null $attributes list of attributes that need to be saved. Defaults to `null`, * meaning all attributes that are loaded from DB will be saved. * @return bool whether the attributes are valid and the record is inserted successfully. */ public function insert($runValidation = true, $attributes = null); /** * Saves the changes to this active record into the database. * * Usage example: * * ```php * $customer = Customer::findOne($id); * $customer->name = $name; * $customer->email = $email; * $customer->update(); * ``` * * @param bool $runValidation whether to perform validation (calling [[\yii\base\Model::validate()|validate()]]) * before saving the record. Defaults to `true`. If the validation fails, the record * will not be saved to the database and this method will return `false`. * @param array|null $attributeNames list of attributes that need to be saved. Defaults to `null`, * meaning all attributes that are loaded from DB will be saved. * @return int|bool the number of rows affected, or `false` if validation fails * or updating process is stopped for other reasons. * Note that it is possible that the number of rows affected is 0, even though the * update execution is successful. */ public function update($runValidation = true, $attributeNames = null); /** * Deletes the record from the database. * * @return int|bool the number of rows deleted, or `false` if the deletion is unsuccessful for some reason. * Note that it is possible that the number of rows deleted is 0, even though the deletion execution is successful. */ public function delete(); /** * Returns a value indicating whether the current record is new (not saved in the database). * @return bool whether the record is new and should be inserted when calling [[save()]]. */ public function getIsNewRecord(); /** * Returns a value indicating whether the given active record is the same as the current one. * Two [[getIsNewRecord()|new]] records are considered to be not equal. * @param static $record record to compare to * @return bool whether the two active records refer to the same row in the same database table. */ public function equals($record); /** * Returns the relation object with the specified name. * A relation is defined by a getter method which returns an object implementing the [[ActiveQueryInterface]] * (normally this would be a relational [[ActiveQuery]] object). * It can be declared in either the ActiveRecord class itself or one of its behaviors. * @param string $name the relation name, e.g. `orders` for a relation defined via `getOrders()` method (case-sensitive). * @param bool $throwException whether to throw exception if the relation does not exist. * @return ActiveQueryInterface the relational query object */ public function getRelation($name, $throwException = true); /** * Populates the named relation with the related records. * Note that this method does not check if the relation exists or not. * @param string $name the relation name, e.g. `orders` for a relation defined via `getOrders()` method (case-sensitive). * @param ActiveRecordInterface|array|null $records the related records to be populated into the relation. * @since 2.0.8 */ public function populateRelation($name, $records); /** * Establishes the relationship between two records. * * The relationship is established by setting the foreign key value(s) in one record * to be the corresponding primary key value(s) in the other record. * The record with the foreign key will be saved into database without performing validation. * * If the relationship involves a junction table, a new row will be inserted into the * junction table which contains the primary key values from both records. * * This method requires that the primary key value is not `null`. * * @param string $name the case sensitive name of the relationship, e.g. `orders` for a relation defined via `getOrders()` method. * @param static $model the record to be linked with the current one. * @param array $extraColumns additional column values to be saved into the junction table. * This parameter is only meaningful for a relationship involving a junction table * (i.e., a relation set with [[ActiveQueryInterface::via()]]). */ public function link($name, $model, $extraColumns = []); /** * Destroys the relationship between two records. * * The record with the foreign key of the relationship will be deleted if `$delete` is true. * Otherwise, the foreign key will be set `null` and the record will be saved without validation. * * @param string $name the case sensitive name of the relationship, e.g. `orders` for a relation defined via `getOrders()` method. * @param static $model the model to be unlinked from the current one. * @param bool $delete whether to delete the model that contains the foreign key. * If false, the model's foreign key will be set `null` and saved. * If true, the model containing the foreign key will be deleted. */ public function unlink($name, $model, $delete = false); /** * Returns the connection used by this AR class. * @return mixed the database connection used by this AR class. */ public static function getDb(); }