Class yii\data\DataFilter

Inheritanceyii\data\DataFilter » yii\base\Model » yii\base\Component » yii\base\BaseObject
ImplementsArrayAccess, IteratorAggregate, yii\base\Arrayable, yii\base\Configurable, yii\base\StaticInstanceInterface
Uses Traitsyii\base\ArrayableTrait, yii\base\StaticInstanceTrait
Subclassesyii\data\ActiveDataFilter
Available since version2.0.13
Source Code https://github.com/yiisoft/yii2/blob/master/framework/data/DataFilter.php

DataFilter is a special yii\base\Model for processing query filtering specification.

It allows validating and building a filter condition passed via request.

Filter example:

{
    "or": [
        {
            "and": [
                {
                    "name": "some name",
                },
                {
                    "price": "25",
                }
            ]
        },
        {
            "id": {"in": [2, 5, 9]},
            "price": {
                "gt": 10,
                "lt": 50
            }
        }
    ]
}

In the request the filter should be specified using a key name equal to $filterAttributeName. Thus actual HTTP request body will look like following:

{
    "filter": {"or": {...}},
    "page": 2,
    ...
}

Raw filter value should be assigned to \yii\data\filter property of the model. You may populate it from request data via load() method:

use yii\data\DataFilter;

$dataFilter = new DataFilter();
$dataFilter->load(Yii::$app->request->getBodyParams());

In order to function this class requires a search model specified via \yii\data\searchModel. This search model should declare all available search attributes and their validation rules. For example:

class SearchModel extends \yii\base\Model
{
    public $id;
    public $name;

    public function rules()
    {
        return [
            [['id', 'name'], 'trim'],
            ['id', 'integer'],
            ['name', 'string'],
        ];
    }
}

In order to reduce amount of classes, you may use yii\base\DynamicModel instance as a \yii\data\searchModel. In this case you should specify \yii\data\searchModel using a PHP callable:

function () {
    return (new \yii\base\DynamicModel(['id' => null, 'name' => null]))
        ->addRule(['id', 'name'], 'trim')
        ->addRule('id', 'integer')
        ->addRule('name', 'string');
}

You can use validate() method to check if filter value is valid. If validation fails you can use getErrors() to get actual error messages.

In order to acquire filter condition suitable for fetching data use build() method.

Note: This is a base class. Its implementation of build() simply returns normalized \yii\data\filter value. In order to convert filter to particular format you should use descendant of this class that implements buildInternal() method accordingly.

See also yii\data\ActiveDataFilter.

Public Properties

Hide inherited properties

PropertyTypeDescriptionDefined By
$attributeMap array Actual attribute names to be used in searched condition, in format: [filterAttribute => actualAttribute]. yii\data\DataFilter
$conditionValidators array Maps filter condition keywords to validation methods. yii\data\DataFilter
$filterAttributeLabel string Label for the filter attribute specified via $filterAttributeName. yii\data\DataFilter
$filterAttributeName string Name of the attribute that handles filter value. yii\data\DataFilter
$filterControls array Keywords or expressions that could be used in a filter. yii\data\DataFilter
$multiValueOperators array List of operators keywords, which should accept multiple values. yii\data\DataFilter
$nullValue string Representation of null instead of literal null in case the latter cannot be used. yii\data\DataFilter
$operatorTypes array Specifies the list of supported search attribute types per each operator. yii\data\DataFilter

Public Methods

Hide inherited methods

MethodDescriptionDefined 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() {@inheritdoc} yii\data\DataFilter
__isset() {@inheritdoc} yii\data\DataFilter
__set() {@inheritdoc} yii\data\DataFilter
__unset() {@inheritdoc} yii\data\DataFilter
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
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() {@inheritdoc} yii\data\DataFilter
attributes() {@inheritdoc} yii\data\DataFilter
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
build() Builds actual filter specification form \yii\data\filter value. yii\data\DataFilter
canGetProperty() {@inheritdoc} yii\data\DataFilter
canSetProperty() {@inheritdoc} yii\data\DataFilter
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
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
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
formName() {@inheritdoc} yii\data\DataFilter
generateAttributeLabel() Generates a user friendly attribute label based on the give attribute name. yii\base\Model
getActiveValidators() Returns the validators applicable to the current \yii\base\scenario. yii\base\Model
getAttributeHint() Returns the text hint for the specified attribute. yii\base\Model
getAttributeLabel() Returns the text label for the specified attribute. yii\base\Model
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
getErrorMessages() yii\data\DataFilter
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
getFilter() yii\data\DataFilter
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
getIterator() Returns an iterator for traversing the attributes in the model. yii\base\Model
getScenario() Returns the scenario that this model is used in. yii\base\Model
getSearchAttributeTypes() yii\data\DataFilter
getSearchModel() yii\data\DataFilter
getValidators() Returns all the validators declared in rules(). yii\base\Model
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
hasMethod() Returns a value indicating whether a method is defined. yii\base\Component
hasProperty() Returns a value indicating whether a property is defined for this component. yii\base\Component
init() Initializes the object. yii\base\BaseObject
instance() Returns static class instance, which can be used to obtain meta information. yii\base\StaticInstanceTrait
isAttributeActive() Returns a value indicating whether the attribute is active in the current scenario. yii\base\Model
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
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
normalize() Normalizes filter value, replacing raw keys according to $filterControls and $attributeMap. yii\data\DataFilter
off() Detaches an existing event handler from this component. yii\base\Component
offsetExists() Returns whether there is an element at the specified offset. yii\base\Model
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\base\Model
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
rules() {@inheritdoc} yii\data\DataFilter
safeAttributes() Returns the attribute names that are safe to be massively assigned in the current scenario. yii\base\Model
scenarios() Returns a list of scenarios and the corresponding active attributes. yii\base\Model
setAttributes() Sets the attribute values in a massive way. yii\base\Model
setErrorMessages() Sets the list of error messages responding to invalid filter structure, in format: [errorKey => message]. yii\data\DataFilter
setFilter() yii\data\DataFilter
setScenario() Sets the scenario for the model. yii\base\Model
setSearchAttributeTypes() yii\data\DataFilter
setSearchModel() yii\data\DataFilter
toArray() Converts the model into an array. yii\base\ArrayableTrait
trigger() Triggers an event. yii\base\Component
validate() Performs the data validation. yii\base\Model
validateFilter() Validates filter attribute value to match filer condition specification. yii\data\DataFilter
validateMultiple() Validates multiple models. yii\base\Model

Protected Methods

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MethodDescriptionDefined By
buildInternal() Performs actual filter build. yii\data\DataFilter
defaultErrorMessages() Returns default values for \yii\data\errorMessages. yii\data\DataFilter
detectSearchAttributeType() Detect attribute type from given validator. yii\data\DataFilter
detectSearchAttributeTypes() Composes default value for \yii\data\searchAttributeTypes from the \yii\data\searchModel validation rules. yii\data\DataFilter
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
filterAttributeValue() Validates attribute value in the scope of \yii\data\searchModel, applying attribute value filters if any. yii\data\DataFilter
parseErrorMessage() Parses content of the message from \yii\data\errorMessages, specified by message key. yii\data\DataFilter
resolveFields() Determines which fields can be returned by toArray(). yii\base\ArrayableTrait
validateAttributeCondition() Validates search condition for a particular attribute. yii\data\DataFilter
validateAttributeValue() Validates attribute value in the scope of \yii\data\model. yii\data\DataFilter
validateBlockCondition() Validates block condition that consists of a single condition. yii\data\DataFilter
validateCondition() Validates filter condition. yii\data\DataFilter
validateConjunctionCondition() Validates conjunction condition that consists of multiple independent ones. yii\data\DataFilter
validateOperatorCondition() Validates operator condition. yii\data\DataFilter

Events

Hide inherited events

EventTypeDescriptionDefined By
EVENT_AFTER_VALIDATE yii\base\Event An event raised at the end of validate() yii\base\Model
EVENT_BEFORE_VALIDATE yii\base\ModelEvent An event raised at the beginning of validate(). yii\base\Model

Constants

Hide inherited constants

ConstantValueDescriptionDefined By
SCENARIO_DEFAULT 'default' The name of the default scenario. yii\base\Model
TYPE_ARRAY 'array' yii\data\DataFilter
TYPE_BOOLEAN 'boolean' yii\data\DataFilter
TYPE_DATE 'date' yii\data\DataFilter
TYPE_DATETIME 'datetime' yii\data\DataFilter
TYPE_FLOAT 'float' yii\data\DataFilter
TYPE_INTEGER 'integer' yii\data\DataFilter
TYPE_STRING 'string' yii\data\DataFilter
TYPE_TIME 'time' yii\data\DataFilter

Property Details

$attributeMap public property

Actual attribute names to be used in searched condition, in format: [filterAttribute => actualAttribute]. For example, in case of using table joins in the search query, attribute map may look like the following:

[
    'authorName' => '{{author}}.[[name]]'
]

Attribute map will be applied to filter condition in normalize() method.

public array $attributeMap = []
$conditionValidators public property

Maps filter condition keywords to validation methods. These methods are used by validateCondition() to validate raw filter conditions.

public array $conditionValidators = ['AND' => 'validateConjunctionCondition''OR' => 'validateConjunctionCondition''NOT' => 'validateBlockCondition''<' => 'validateOperatorCondition''>' => 'validateOperatorCondition''<=' => 'validateOperatorCondition''>=' => 'validateOperatorCondition''=' => 'validateOperatorCondition''!=' => 'validateOperatorCondition''IN' => 'validateOperatorCondition''NOT IN' => 'validateOperatorCondition''LIKE' => 'validateOperatorCondition']
$filterAttributeLabel public property

Label for the filter attribute specified via $filterAttributeName. It will be used during error messages composition.

$filterAttributeName public property

Name of the attribute that handles filter value. The name is used to load data via load() method.

public string $filterAttributeName 'filter'
$filterControls public property

Keywords or expressions that could be used in a filter. Array keys are the expressions used in raw filter value obtained from user request. Array values are internal build keys used in this class methods.

Any unspecified keyword will not be recognized as a filter control and will be treated as an attribute name. Thus you should avoid conflicts between control keywords and attribute names. For example: in case you have control keyword 'like' and an attribute named 'like', specifying condition for such attribute will be impossible.

You may specify several keywords for the same filter build key, creating multiple aliases. For example:

[
    'eq' => '=',
    '=' => '=',
    '==' => '=',
    '===' => '=',
    // ...
]

Note: while specifying filter controls take actual data exchange format, which your API uses, in mind. Make sure each specified control keyword is valid for the format. For example, in XML tag name can start only with a letter character, thus controls like >, '=' or $gt will break the XML schema.

public array $filterControls = ['and' => 'AND''or' => 'OR''not' => 'NOT''lt' => '<''gt' => '>''lte' => '<=''gte' => '>=''eq' => '=''neq' => '!=''in' => 'IN''nin' => 'NOT IN''like' => 'LIKE']
$multiValueOperators public property

List of operators keywords, which should accept multiple values.

public array $multiValueOperators = ['IN''NOT IN']
$nullValue public property (available since version 2.0.40)

Representation of null instead of literal null in case the latter cannot be used.

public string $nullValue 'NULL'
$operatorTypes public property

Specifies the list of supported search attribute types per each operator. This field should be in format: 'operatorKeyword' => ['type1', 'type2' ...]. Supported types list can be specified as *, which indicates that operator supports all types available. Any unspecified keyword will not be considered as a valid operator.

public array $operatorTypes = ['<' => [self::TYPE_INTEGERself::TYPE_FLOATself::TYPE_DATETIMEself::TYPE_DATEself::TYPE_TIME], '>' => [self::TYPE_INTEGERself::TYPE_FLOATself::TYPE_DATETIMEself::TYPE_DATEself::TYPE_TIME], '<=' => [self::TYPE_INTEGERself::TYPE_FLOATself::TYPE_DATETIMEself::TYPE_DATEself::TYPE_TIME], '>=' => [self::TYPE_INTEGERself::TYPE_FLOATself::TYPE_DATETIMEself::TYPE_DATEself::TYPE_TIME], '=' => '*''!=' => '*''IN' => '*''NOT IN' => '*''LIKE' => [self::TYPE_STRING]]

Method Details

__get() public method

{@inheritdoc}

public void __get ( $name )
$name
__isset() public method

{@inheritdoc}

public void __isset ( $name )
$name
__set() public method

{@inheritdoc}

public void __set ( $name, $value )
$name
$value
__unset() public method

{@inheritdoc}

public void __unset ( $name )
$name
attributeLabels() public method

{@inheritdoc}

public void attributeLabels ( )
attributes() public method

{@inheritdoc}

public void attributes ( )
build() public method

Builds actual filter specification form \yii\data\filter value.

public mixed|false build ( $runValidation true )
$runValidation boolean

Whether to perform validation (calling validate()) before building the filter. Defaults to true. If the validation fails, no filter will be built and this method will return false.

return mixed|false

Built actual filter value, or false if validation fails.

buildInternal() protected method

Performs actual filter build.

By default this method returns result of normalize(). The child class may override this method providing more specific implementation.

protected mixed buildInternal ( )
return mixed

Built actual filter value.

canGetProperty() public method

{@inheritdoc}

public void canGetProperty ( $name, $checkVars true, $checkBehaviors true )
$name
$checkVars
$checkBehaviors
canSetProperty() public method

{@inheritdoc}

public void canSetProperty ( $name, $checkVars true, $checkBehaviors true )
$name
$checkVars
$checkBehaviors
defaultErrorMessages() protected method

Returns default values for \yii\data\errorMessages.

protected array defaultErrorMessages ( )
return array

Default error messages in [errorKey => message] format.

detectSearchAttributeType() protected method (available since version 2.0.14)

Detect attribute type from given validator.

protected string|null detectSearchAttributeType ( yii\validators\Validator $validator )
$validator
return string|null

Detected attribute type.

detectSearchAttributeTypes() protected method

Composes default value for \yii\data\searchAttributeTypes from the \yii\data\searchModel validation rules.

protected array detectSearchAttributeTypes ( )
return array

Attribute type map.

filterAttributeValue() protected method

Validates attribute value in the scope of \yii\data\searchModel, applying attribute value filters if any.

protected mixed filterAttributeValue ( $attribute, $value )
$attribute string

Attribute name.

$value mixed

Attribute value.

return mixed

Filtered attribute value.

formName() public method

{@inheritdoc}

public void formName ( )
getErrorMessages() public method

public array getErrorMessages ( )
return array

Error messages in format [errorKey => message].

getFilter() public method

public mixed getFilter ( )
return mixed

Raw filter value.

getSearchAttributeTypes() public method

public array getSearchAttributeTypes ( )
return array

Search attribute type map.

getSearchModel() public method

public yii\base\Model getSearchModel ( )
return yii\base\Model

Model instance.

throws yii\base\InvalidConfigException

on invalid configuration.

normalize() public method

Normalizes filter value, replacing raw keys according to $filterControls and $attributeMap.

public array|boolean normalize ( $runValidation true )
$runValidation boolean

Whether to perform validation (calling validate()) before normalizing the filter. Defaults to true. If the validation fails, no filter will be processed and this method will return false.

return array|boolean

Normalized filter value, or false if validation fails.

parseErrorMessage() protected method

Parses content of the message from \yii\data\errorMessages, specified by message key.

protected string parseErrorMessage ( $messageKey, $params = [] )
$messageKey string

Message key.

$params array

Params to be parsed into the message.

return string

Composed message string.

rules() public method

{@inheritdoc}

public void rules ( )
setErrorMessages() public method

Sets the list of error messages responding to invalid filter structure, in format: [errorKey => message].

Message may contain placeholders that will be populated depending on the message context. For each message a {filter} placeholder is available referring to the label for $filterAttributeName attribute.

public void setErrorMessages ( $errorMessages )
$errorMessages array|Closure

Error messages in [errorKey => message] format, or a PHP callback returning them.

setFilter() public method

public void setFilter ( $filter )
$filter mixed

Raw filter value.

setSearchAttributeTypes() public method

public void setSearchAttributeTypes ( $searchAttributeTypes )
$searchAttributeTypes array|null

Search attribute type map.

setSearchModel() public method

public void setSearchModel ( $model )
$model yii\base\Model|array|string|callable

Model instance or its DI compatible configuration.

throws yii\base\InvalidConfigException

on invalid configuration.

validateAttributeCondition() protected method

Validates search condition for a particular attribute.

protected void validateAttributeCondition ( $attribute, $condition )
$attribute string

Search attribute name.

$condition mixed

Search condition.

validateAttributeValue() protected method

Validates attribute value in the scope of \yii\data\model.

protected void validateAttributeValue ( $attribute, $value )
$attribute string

Attribute name.

$value mixed

Attribute value.

validateBlockCondition() protected method

Validates block condition that consists of a single condition.

This covers such operators as not.

protected void validateBlockCondition ( $operator, $condition )
$operator string

Raw operator control keyword.

$condition mixed

Raw condition.

validateCondition() protected method

Validates filter condition.

protected void validateCondition ( $condition )
$condition mixed

Raw filter condition.

validateConjunctionCondition() protected method

Validates conjunction condition that consists of multiple independent ones.

This covers such operators as and and or.

protected void validateConjunctionCondition ( $operator, $condition )
$operator string

Raw operator control keyword.

$condition mixed

Raw condition.

validateFilter() public method

Validates filter attribute value to match filer condition specification.

public void validateFilter ( )
validateOperatorCondition() protected method

Validates operator condition.

protected void validateOperatorCondition ( $operator, $condition, $attribute null )
$operator string

Raw operator control keyword.

$condition mixed

Attribute condition.

$attribute string

Attribute name.