craft\records\Session » craft\db\ActiveRecord » yii\db\ActiveRecord » yii\db\BaseActiveRecord » yii\base\Model » yii\base\Component » yii\base\BaseObject
ArrayAccess, IteratorAggregate, yii\base\Arrayable, yii\base\Configurable, yii\base\StaticInstanceInterface, yii\db\ActiveRecordInterface
Uses traits
yii\base\ArrayableTrait, yii\base\StaticInstanceTrait

Class Session record.

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Public Properties

activeValidatorsyii\validators\Validator – The validators applicable to the current scenario.
attributesarray – Attribute values (name => value).
behaviorsyii\base\Behavior – List of behaviors attached to this component
dirtyAttributesarray – The changed attribute values (name-value pairs)
errorsarray – Errors for all attributes or the specified attribute.
firstErrorsarray – The first errors.
isNewRecordboolean – Whether the record is new and should be inserted when calling save().
iteratorArrayIterator – An iterator for traversing the items in the list.
oldAttributesarray – The old attribute values (name-value pairs)
oldPrimaryKeymixed – The old primary key value.
primaryKeymixed – The primary key value.
relatedRecordsarray – An array of related records indexed by relation names.
scenariostring – The scenario that this model is in.
useryii\db\ActiveQueryInterface – The relational query object.
validatorsArrayObject, yii\validators\Validator – All the validators declared in the model.



The relational query object.

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Public Methods

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


Returns the session’s user.

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yii\db\ActiveQueryInterface – The relational query object.


Returns the validation rules for attributes.

Validation rules are used by validate() to check if attribute values are valid. Child classes may override this method to declare different validation rules.

Each rule is an array with the following structure:

    ['attribute1', 'attribute2'],
    'validator type',
    'on' => ['scenario1', 'scenario2'],
    //...other parameters...


  • attribute list: required, specifies the attributes array to be validated, for single attribute you can pass a string;
  • validator type: required, specifies the validator to be used. It can be a built-in validator name, a method name of the model class, an anonymous function, or a validator class name.
  • on: optional, specifies the scenarios array in which the validation rule can be applied. If this option is not set, the rule will apply to all scenarios.
  • additional name-value pairs can be specified to initialize the corresponding validator properties. Please refer to individual validator class API for possible properties.

A validator can be either an object of a class extending \craft\records\Validator, or a model class method (called inline validator) that has the following signature:

// $params refers to validation parameters given in the rule
function validatorName($attribute, $params)

In the above $attribute refers to the attribute currently being validated while $params contains an array of validator configuration options such as max in case of string validator. The value of the attribute currently being validated can be accessed as $this->$attribute. Note the $ before attribute; this is taking the value of the variable $attribute and using it as the name of the property to access.

Yii also provides a set of built-in validators. Each one has an alias name which can be used when specifying a validation rule.

Below are some examples:

    // built-in "required" validator
    [['username', 'password'], 'required'],
    // built-in "string" validator customized with "min" and "max" properties
    ['username', 'string', 'min' => 3, 'max' => 12],
    // built-in "compare" validator that is used in "register" scenario only
    ['password', 'compare', 'compareAttribute' => 'password2', 'on' => 'register'],
    // an inline validator defined via the "authenticate()" method in the model class
    ['password', 'authenticate', 'on' => 'login'],
    // a validator of class "DateRangeValidator"
    ['dateRange', 'DateRangeValidator'],

Note, in order to inherit rules defined in the parent class, a child class needs to merge the parent rules with child rules using functions such as array_merge().

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array – Validation rules


Declares the name of the database table associated with this AR class.

By default this method returns the class name as the table name by calling yii\helpers\Inflector::camel2id() with prefix yii\db\Connection::$tablePrefix. For example if yii\db\Connection::$tablePrefix is tbl_, Customer becomes tbl_customer, and OrderItem becomes tbl_order_item. You may override this method if the table is not named after this convention.

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string – The table name

Protected Methods

createRelationQuery()Creates a query instance for has-one or has-many relation.
deleteInternal()Deletes an ActiveRecord without considering transaction.
extractFieldsFor()Extract nested fields from a fields collection for a given root field Nested fields are separated with dots (.). e.g: "" The previous example would extract "id".
extractRootFields()Extracts the root field names from nested fields.
insertInternal()Inserts an ActiveRecord into DB without considering transaction.
prepareForDb()Sets the dateCreated, dateUpdated, and uid attributes on the record.
refreshInternal()Repopulates this active record with the latest data from a newly fetched instance.
resolveFields()Determines which fields can be returned by toArray().


OP_ALLAll three operations: insert, update, delete.
OP_DELETEThe delete operation. This is mainly used when overriding transactions() to specify which operations are transactional.
OP_INSERTThe insert operation. This is mainly used when overriding transactions() to specify which operations are transactional.
OP_UPDATEThe update operation. This is mainly used when overriding transactions() to specify which operations are transactional.
SCENARIO_DEFAULTThe name of the default scenario.