# Class yii\redis\ActiveRecord

Inheritance | yii\redis\ActiveRecord » yii\db\BaseActiveRecord » yii\base\Model » yii\base\Component » yii\base\BaseObject
Implements | ArrayAccess, IteratorAggregate, yii\base\Arrayable, yii\base\Configurable, yii\base\StaticInstanceInterface, yii\db\ActiveRecordInterface
Uses Traits | yii\base\ArrayableTrait, yii\base\StaticInstanceTrait
Available since version | 2.0
Source Code | https://github.com/yiisoft/yii2-redis/blob/master/ActiveRecord.php

ActiveRecord is the base class for classes representing relational data in terms of objects.

This class implements the ActiveRecord pattern for the redis key-value store.

For defining a record a subclass should at least implement the attributes() method to define attributes. A primary key can be defined via primaryKey() which defaults to `id` if not specified.

The following is an example model called `Customer`:

    class Customer extends \yii\redis\ActiveRecord
    {
        public function attributes()
        {
            return ['id', 'name', 'address', 'registration_date'];
        }
    }

## Public Properties

Hide inherited properties

Property | Type | Description | Defined By
--- | --- | --- | ---
$activeValidators | yii\validators\Validator[] | The validators applicable to the current $scenario. This property is read-only. | yii\base\Model
$attributes | array | Attribute values (name => value). | yii\base\Model
$behaviors | yii\base\Behavior[] | List of behaviors attached to this component. This property is read-only. | yii\base\Component
$dirtyAttributes | array | The changed attribute values (name-value pairs). This property is read-only. | yii\db\BaseActiveRecord
$errors | array | An array of errors for all attributes. Empty array is returned if no error. The result is a two-dimensional array. See getErrors() for detailed description. This property is read-only. | yii\base\Model
$firstErrors | array | The first errors. The array keys are the attribute names, and the array values are the corresponding error messages. An empty array will be returned if there is no error. This property is read-only. | yii\base\Model
$isNewRecord | boolean | Whether the record is new and should be inserted when calling save(). | yii\db\BaseActiveRecord
$iterator | ArrayIterator | An iterator for traversing the items in the list. This property is read-only. | yii\base\Model
$oldAttributes | array | The old attribute values (name-value pairs). Note that the type of this property differs in getter and setter. See getOldAttributes() and setOldAttributes() for details. | yii\db\BaseActiveRecord
$oldPrimaryKey | mixed | The old primary key value. An array (column name => column value) is returned if the primary key is composite. A string is returned otherwise (null will be returned if the key value is null). This property is read-only. | yii\db\BaseActiveRecord
$primaryKey | mixed | The primary key value. An array (column name => column value) is returned if the primary key is composite. A string is returned otherwise (null will be returned if the key value is null). This property is read-only. | yii\db\BaseActiveRecord
$relatedRecords | array | An array of related records indexed by relation names. This property is read-only. | yii\db\BaseActiveRecord
$scenario | string | The scenario that this model is in. Defaults to SCENARIO_DEFAULT. | yii\base\Model
$validators | ArrayObject|yii\validators\Validator[] | All the validators declared in the model. This property is read-only. | yii\base\Model

## Public Methods

Hide inherited methods

Method | Description | Defined By
--- | --- | ---
__call() | Calls the named method which is not a class method. | yii\base\Component
__clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component
__construct() | Constructor. | yii\base\BaseObject
__get() | PHP getter magic method. | yii\db\BaseActiveRecord
__isset() | Checks if a property value is null. | yii\db\BaseActiveRecord
__set() | PHP setter magic method. | yii\db\BaseActiveRecord
__unset() | Sets a component property to be null. | yii\db\BaseActiveRecord
activeAttributes() | Returns the attribute names that are subject to validation in the current scenario. | yii\base\Model
addError() | Adds a new error to the specified attribute. | yii\base\Model
addErrors() | Adds a list of errors. | yii\base\Model
afterDelete() | This method is invoked after deleting a record. | yii\db\BaseActiveRecord
afterFind() | This method is called when the AR object is created and populated with the query result. | yii\db\BaseActiveRecord
afterRefresh() | This method is called when the AR object is refreshed. | yii\db\BaseActiveRecord
afterSave() | This method is called at the end of inserting or updating a record. | yii\db\BaseActiveRecord
afterValidate() | This method is invoked after validation ends. | yii\base\Model
attachBehavior() | Attaches a behavior to this component. | yii\base\Component
attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component
attributeHints() | Returns the attribute hints. | yii\base\Model
attributeLabels() | Returns the attribute labels. | yii\base\Model
attributes() | Returns the list of all attribute names of the model. | yii\redis\ActiveRecord
beforeDelete() | This method is invoked before deleting a record. | yii\db\BaseActiveRecord
beforeSave() | This method is called at the beginning of inserting or updating a record. | yii\db\BaseActiveRecord
beforeValidate() | This method is invoked before validation starts. | yii\base\Model
behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component
buildKey() | Builds a normalized key from a given primary key value. | yii\redis\ActiveRecord
canGetProperty() | Returns a value indicating whether a property can be read. | yii\db\BaseActiveRecord
canSetProperty() | Returns a value indicating whether a property can be set. | yii\db\BaseActiveRecord
className() | Returns the fully qualified name of this class. | yii\base\BaseObject
clearErrors() | Removes errors for all attributes or a single attribute. | yii\base\Model
createValidators() | Creates validator objects based on the validation rules specified in rules(). | yii\base\Model
delete() | Deletes the table row corresponding to this active record. | yii\db\BaseActiveRecord
deleteAll() | Deletes rows in the table using the provided conditions. | yii\redis\ActiveRecord
detachBehavior() | Detaches a behavior from the component. | yii\base\Component
detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component
ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component
equals() | Returns a value indicating whether the given active record is the same as the current one. | yii\db\BaseActiveRecord
extraFields() | Returns the list of fields that can be expanded further and returned by toArray(). | yii\base\ArrayableTrait
fields() | Returns the list of fields that should be returned by default by toArray() when no specific fields are specified. | yii\base\ArrayableTrait
find() | Creates an yii\db\ActiveQueryInterface instance for query purpose. | yii\redis\ActiveRecord
findAll() | Returns a list of active record models that match the specified primary key value(s) or a set of column values. | yii\db\BaseActiveRecord
findOne() | Returns a single active record model instance by a primary key or an array of column values. | yii\db\BaseActiveRecord
formName() | Returns the form name that this model class should use. | yii\base\Model
generateAttributeLabel() | Generates a user friendly attribute label based on the give attribute name. | yii\base\Model
getActiveValidators() | Returns the validators applicable to the current $scenario. | yii\base\Model
getAttribute() | Returns the named attribute value. | yii\db\BaseActiveRecord
getAttributeHint() | Returns the text hint for the specified attribute. | yii\db\BaseActiveRecord
getAttributeLabel() | Returns the text label for the specified attribute. | yii\db\BaseActiveRecord
getAttributes() | Returns attribute values. | yii\base\Model
getBehavior() | Returns the named behavior object. | yii\base\Component
getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component
getDb() | Returns the database connection used by this AR class. | yii\redis\ActiveRecord
getDirtyAttributes() | Returns the attribute values that have been modified since they are loaded or saved most recently. | yii\db\BaseActiveRecord
getErrorSummary() | Returns the errors for all attributes as a one-dimensional array. | yii\base\Model
getErrors() | Returns the errors for all attributes or a single attribute. | yii\base\Model
getFirstError() | Returns the first error of the specified attribute. | yii\base\Model
getFirstErrors() | Returns the first error of every attribute in the model. | yii\base\Model
getIsNewRecord() | Returns a value indicating whether the current record is new. | yii\db\BaseActiveRecord
getIterator() | Returns an iterator for traversing the attributes in the model. | yii\base\Model
getOldAttribute() | Returns the old value of the named attribute. | yii\db\BaseActiveRecord
getOldAttributes() | Returns the old attribute values. | yii\db\BaseActiveRecord
getOldPrimaryKey() | Returns the old primary key value(s). | yii\db\BaseActiveRecord
getPrimaryKey() | Returns the primary key value(s). | yii\db\BaseActiveRecord
getRelatedRecords() | Returns all populated related records. | yii\db\BaseActiveRecord
getRelation() | Returns the relation object with the specified name. | yii\db\BaseActiveRecord
getScenario() | Returns the scenario that this model is used in. | yii\base\Model
getValidators() | Returns all the validators declared in rules(). | yii\base\Model
hasAttribute() | Returns a value indicating whether the model has an attribute with the specified name. | yii\db\BaseActiveRecord
hasErrors() | Returns a value indicating whether there is any validation error. | yii\base\Model
hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component
hasMany() | Declares a `has-many` relation. | yii\db\BaseActiveRecord
hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component
hasOne() | Declares a `has-one` relation. | yii\db\BaseActiveRecord
hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component
init() | Initializes the object. | yii\db\BaseActiveRecord
insert() | Inserts the record into the database using the attribute values of this record. | yii\redis\ActiveRecord
instance() | Returns static class instance, which can be used to obtain meta information. | yii\base\StaticInstanceTrait
instantiate() | Creates an active record instance. | yii\db\BaseActiveRecord
isAttributeActive() | Returns a value indicating whether the attribute is active in the current scenario. | yii\base\Model
isAttributeChanged() | Returns a value indicating whether the named attribute has been changed. | yii\db\BaseActiveRecord
isAttributeRequired() | Returns a value indicating whether the attribute is required. | yii\base\Model
isAttributeSafe() | Returns a value indicating whether the attribute is safe for massive assignments. | yii\base\Model
isPrimaryKey() | Returns a value indicating whether the given set of attributes represents the primary key for this model. | yii\db\BaseActiveRecord
isRelationPopulated() | Check whether the named relation has been populated with records. | yii\db\BaseActiveRecord
keyPrefix() | Declares prefix of the key that represents the keys that store this records in redis. | yii\redis\ActiveRecord
link() | Establishes the relationship between two models. | yii\db\BaseActiveRecord
load() | Populates the model with input data. | yii\base\Model
loadMultiple() | Populates a set of models with the data from end user. | yii\base\Model
markAttributeDirty() | Marks an attribute dirty. | yii\db\BaseActiveRecord
off() | Detaches an existing event handler from this component. | yii\base\Component
offsetExists() | Returns whether there is an element at the specified offset. | yii\db\BaseActiveRecord
offsetGet() | Returns the element at the specified offset. | yii\base\Model
offsetSet() | Sets the element at the specified offset. | yii\base\Model
offsetUnset() | Sets the element value at the specified offset to null. | yii\db\BaseActiveRecord
on() | Attaches an event handler to an event. | yii\base\Component
onUnsafeAttribute() | This method is invoked when an unsafe attribute is being massively assigned. | yii\base\Model
optimisticLock() | Returns the name of the column that stores the lock version for implementing optimistic locking. | yii\db\BaseActiveRecord
populateRecord() | Populates an active record object using a row of data from the database/storage. | yii\db\BaseActiveRecord
populateRelation() | Populates the named relation with the related records. | yii\db\BaseActiveRecord
primaryKey() | Returns the primary key name(s) for this AR class. | yii\redis\ActiveRecord
refresh() | Repopulates this active record with the latest data. | yii\db\BaseActiveRecord
rules() | Returns the validation rules for attributes. | yii\base\Model
safeAttributes() | Returns the attribute names that are safe to be massively assigned in the current scenario. | yii\base\Model
save() | Saves the current record. | yii\db\BaseActiveRecord
scenarios() | Returns a list of scenarios and the corresponding active attributes. | yii\base\Model
setAttribute() | Sets the named attribute value. | yii\db\BaseActiveRecord
setAttributes() | Sets the attribute values in a massive way. | yii\base\Model
setIsNewRecord() | Sets the value indicating whether the record is new. | yii\db\BaseActiveRecord
setOldAttribute() | Sets the old value of the named attribute. | yii\db\BaseActiveRecord
setOldAttributes() | Sets the old attribute values. | yii\db\BaseActiveRecord
setScenario() | Sets the scenario for the model. | yii\base\Model
toArray() | Converts the model into an array. | yii\base\ArrayableTrait
trigger() | Triggers an event. | yii\base\Component
unlink() | Destroys the relationship between two models. | yii\db\BaseActiveRecord
unlinkAll() | Destroys the relationship in current model. | yii\db\BaseActiveRecord
update() | Saves the changes to this active record into the associated database table. | yii\db\BaseActiveRecord
updateAll() | Updates the whole table using the provided attribute values and conditions. | yii\redis\ActiveRecord
updateAllCounters() | Updates the whole table using the provided counter changes and conditions. | yii\redis\ActiveRecord
updateAttributes() | Updates the specified attributes. | yii\db\BaseActiveRecord
updateCounters() | Updates one or several counter columns for the current AR object. | yii\db\BaseActiveRecord
validate() | Performs the data validation. | yii\base\Model
validateMultiple() | Validates multiple models. | yii\base\Model

## Protected Methods

Hide inherited methods

Method | Description | Defined By
--- | --- | ---
createRelationQuery() | Creates a query instance for `has-one` or `has-many` relation. | yii\db\BaseActiveRecord
extractFieldsFor() | Extract nested fields from a fields collection for a given root field Nested fields are separated with dots (.). e.g: "item.id" The previous example would extract "id". | yii\base\ArrayableTrait
extractRootFields() | Extracts the root field names from nested fields. | yii\base\ArrayableTrait
findByCondition() | Finds ActiveRecord instance(s) by the given condition. | yii\db\BaseActiveRecord
refreshInternal() | Repopulates this active record with the latest data from a newly fetched instance. | yii\db\BaseActiveRecord
resolveFields() | Determines which fields can be returned by toArray(). | yii\base\ArrayableTrait
updateInternal() |  | yii\db\BaseActiveRecord

## Events

Hide inherited events

Event | Type | Description | Defined By
--- | --- | --- | ---
EVENT_AFTER_DELETE | \yii\db\Event | An event that is triggered after a record is deleted. | yii\db\BaseActiveRecord
EVENT_AFTER_FIND | \yii\db\Event | An event that is triggered after the record is created and populated with query result. | yii\db\BaseActiveRecord
EVENT_AFTER_INSERT | yii\db\AfterSaveEvent | An event that is triggered after a record is inserted. | yii\db\BaseActiveRecord
EVENT_AFTER_REFRESH | \yii\db\Event | An event that is triggered after a record is refreshed. (available since version 2.0.8) | yii\db\BaseActiveRecord
EVENT_AFTER_UPDATE | yii\db\AfterSaveEvent | An event that is triggered after a record is updated. | yii\db\BaseActiveRecord
EVENT_AFTER_VALIDATE | yii\base\Event | An event raised at the end of validate() | yii\base\Model
EVENT_BEFORE_DELETE | yii\base\ModelEvent | An event that is triggered before deleting a record. | yii\db\BaseActiveRecord
EVENT_BEFORE_INSERT | yii\base\ModelEvent | An event that is triggered before inserting a record. | yii\db\BaseActiveRecord
EVENT_BEFORE_UPDATE | yii\base\ModelEvent | An event that is triggered before updating a record. | yii\db\BaseActiveRecord
EVENT_BEFORE_VALIDATE | yii\base\ModelEvent | An event raised at the beginning of validate(). | yii\base\Model
EVENT_INIT | \yii\db\Event | An event that is triggered when the record is initialized via init(). | yii\db\BaseActiveRecord

## Constants

Hide inherited constants

Constant | Value | Description | Defined By
--- | --- | --- | ---
SCENARIO_DEFAULT | 'default' | The name of the default scenario. | yii\base\Model

## Method Details

attributes() public method

Returns the list of all attribute names of the model.

This method must be overridden by child classes to define available attributes.

public array attributes ( )
return | array | List of attribute names.

buildKey() public static method

Builds a normalized key from a given primary key value.

public static string buildKey ( $key )
$key | mixed | The key to be normalized
return | string | The generated key

deleteAll() public static method

Deletes rows in the table 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:

    Customer::deleteAll(['status' => 3]);

public static integer deleteAll ( $condition = null )
$condition | array | The conditions that will be put in the WHERE part of the DELETE SQL. Please refer to yii\redis\ActiveQuery::where() on how to specify this parameter.
return | integer | The number of rows deleted

find() public static method

Creates an yii\db\ActiveQueryInterface instance for query purpose.

The returned yii\db\ActiveQueryInterface instance can be further customized by calling methods defined in yii\db\ActiveQueryInterface before `one()` or `all()` is called to return populated ActiveRecord instances. For example,

    // 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 yii\db\BaseActiveRecord::hasOne() and yii\db\BaseActiveRecord::hasMany() to create a relational query.

You may override this method to return a customized query. For example,

    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:

    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();

public static yii\redis\ActiveQuery find ( )
return | yii\redis\ActiveQuery | The newly created yii\redis\ActiveQuery instance.

getDb() public static method

Returns the database connection used by this AR class.

By default, the "redis" application component is used as the database connection. You may override this method if you want to use a different database connection.

public static yii\redis\Connection getDb ( )
return | yii\redis\Connection | The database connection used by this AR class.

insert() public method

Inserts the record into the database using the attribute values of this record.

Usage example:

    $customer = new Customer;
    $customer->name = $name;
    $customer->email = $email;
    $customer->insert();

public boolean insert ( $runValidation = true, $attributes = null )
$runValidation | boolean | Whether to perform validation (calling 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`.
$attributes | array | List of attributes that need to be saved. Defaults to `null`, meaning all attributes that are loaded from DB will be saved.
return | boolean | Whether the attributes are valid and the record is inserted successfully.

keyPrefix() public static method

Declares prefix of the key that represents the keys that store this records in redis.

By default this method returns the class name as the table name by calling yii\helpers\Inflector::camel2id(). For example, 'Customer' becomes 'customer', and 'OrderItem' becomes 'order_item'. You may override this method if you want different key naming.

public static string keyPrefix ( )
return | string | The prefix to apply to all AR keys

primaryKey() public static method

Returns the primary key name(s) for this AR class.

This method should be overridden by child classes to define the primary key.

Note that an array should be returned even when it is a single primary key.

public static string[] primaryKey ( )
return | string[] | The primary keys of this record.

updateAll() public static method

Updates the whole table using the provided attribute values and conditions.

For example, to change the status to be 1 for all customers whose status is 2:

    Customer::updateAll(['status' => 1], ['id' => 2]);

public static integer updateAll ( $attributes, $condition = null )
$attributes | array | Attribute values (name-value pairs) to be saved into the table
$condition | array | The conditions that will be put in the WHERE part of the UPDATE SQL. Please refer to yii\redis\ActiveQuery::where() on how to specify this parameter.
return | integer | The number of rows updated

updateAllCounters() public static method

Updates the whole table using the provided counter changes and conditions.

For example, to increment all customers' age by 1,

    Customer::updateAllCounters(['age' => 1]);

public static integer updateAllCounters ( $counters, $condition = null )
$counters | array | The counters to be updated (attribute name => increment value). Use negative values if you want to decrement the counters.
$condition | array | The conditions that will be put in the WHERE part of the UPDATE SQL. Please refer to yii\redis\ActiveQuery::where() on how to specify this parameter.
return | integer | The number of rows updated