Yii框架v2.0類參考中文版，yii框架v2.0中文版

Yii框架v2.0類參考中文版，yii框架v2.0中文版

本文譯者：Alexander Gao <[email protected]>  引用、轉載請說明出處。

(未完成，譯文持續更新中)

Yii PHP框架 版本2 ¶

此為 Yii 2的核心框架代碼.

此倉庫是 https://github.com/yiisoft/yii2下的子項目，請對主倉庫提交問題報告、拉取請求。關於許可信息請查閱 LICENSE 文檔。

安裝 ¶

推薦通過 composer 來安裝Yii框架.

運行

composer global require "fxp/composer-asset-plugin:~1.0.0"
composer require yiisoft/yii2

或添加

"yiisoft/yii2": "~2.0.0",

到composer.json 的require section中。

類參考

類描述 Yii Yii 是服務公共框架功能的助手類。 yii\BaseYii BaseYii 是Yii框架的核心助手類。 yii\base\Action Action 是所有控制器動作類的基類。 yii\base\ActionEvent ActionEvent 用於表示一個動作事件的事件參數。 yii\base\ActionFilter ActionFilter 是動作過濾器的基類。 yii\base\Application Application 是所有應用類的基類。 yii\base\ArrayAccessTrait ArrayAccessTrait 為 IteratorAggregate, ArrayAccess 和Countable 提供實現。 yii\base\Arrayable Arrayable is the interface that should be implemented by classes who want to support customizable representation of their instances. yii\base\ArrayableTrait ArrayableTrait 提供了一個 yii\base\Arrayable 接口的公共實現。 yii\base\Behavior Behavior 是所有行為類的基類。 yii\base\BootstrapInterface BootstrapInterface is the interface that should be implemented by classes who want to participate in the application bootstrap process. yii\base\Component Component is the base class that implements the property, event and behavior features. yii\base\Configurable Configurable is the interface that should be implemented by classes who support configuring its properties through the last parameter to its constructor. yii\base\Controller Controller 是包含控制器邏輯的類的基類。 yii\base\DynamicModel DynamicModel 是一個主要用於特定數據驗證的模型類。  yii\base\ErrorException ErrorException 表示一個PHP錯誤。 yii\base\ErrorHandler ErrorHandler 處理未捕獲的php錯誤和異常。 yii\base\Event Event 是所有事件類的基類。 yii\base\Exception Exception為所有問題表示一個普通異常。 yii\base\ExitException ExitException 表示一個應用程序的正常終止。 yii\base\InlineAction InlineAction 表示一個被定義為控制器方法的動作。 yii\base\InvalidCallException InvalidCallException 表示一個因使用錯誤方式調用方法而引發的異常。 yii\base\InvalidConfigException InvalidConfigException 表示由錯誤的對象配置而引發的異常。 yii\base\InvalidParamException InvalidParamException 表示由傳入到方法的無效函數而引發的異常。 yii\base\InvalidRouteException InvalidRouteException 表示因無效路由引發的異常。. yii\base\InvalidValueException InvalidValueException 表示因函數返回意外類型的值而引發的異常。 yii\base\Model Model 是數據模型的基類。 yii\base\ModelEvent ModelEvent 表示了一個 yii\base\Model events 需要的參數。 yii\base\Module Module 是模塊和應用程序類的基類。 yii\base\NotSupportedException NotSupportedException 表示一個因訪問不支持的功能而引發的異常。 yii\base\Object Object is the base class that implements the property feature. yii\base\Request Request 表示一個被 yii\base\Application 處理的請求對象。 yii\base\Response Response represents the response of an yii\base\Application to a yii\base\Request. yii\base\Security Security provides a set of methods to handle common security-related tasks. yii\base\Theme Theme 表示應用程序的主題。 yii\base\UnknownClassException UnknownClassException 表示因使用未知的類引發的異常。 yii\base\UnknownMethodException UnknownMethodException represents an exception caused by accessing an unknown object method. yii\base\UnknownPropertyException UnknownPropertyException represents an exception caused by accessing unknown object properties. yii\base\UserException UserException 是將要顯示給終端用戶的異常的基類。 yii\base\View View 代表MVC模式下的視圖對象。 yii\base\ViewContextInterface ViewContextInterface is the interface that should implemented by classes who want to support relative view names. yii\base\ViewEvent ViewEvent 表示被 yii\base\View 組件觸發的事件。 yii\base\ViewRenderer ViewRenderer是視圖渲染類的基類。 yii\base\Widget Widget 是插件類的基類。 yii\behaviors\AttributeBehavior AttributeBehavior automatically assigns a specified value to one or multiple attributes of an ActiveRecord object when certain events happen. yii\behaviors\BlameableBehavior BlameableBehavior automatically fills the specified attributes with the current user ID. yii\behaviors\SluggableBehavior SluggableBehavior automatically fills the specified attribute with a value that can be used a slug in a URL. yii\behaviors\TimestampBehavior TimestampBehavior automatically fills the specified attributes with the current timestamp. yii\caching\ApcCache ApcCache provides APC caching in terms of an application component. yii\caching\ArrayCache ArrayCache provides caching for the current request only by storing the values in an array. yii\caching\Cache Cache is the base class for cache classes supporting different cache storage implementations. yii\caching\ChainedDependency ChainedDependency represents a dependency which is composed of a list of other dependencies. yii\caching\DbCache DbCache implements a cache application component by storing cached data in a database. yii\caching\DbDependency DbDependency represents a dependency based on the query result of a SQL statement. yii\caching\Dependency Dependency is the base class for cache dependency classes. yii\caching\DummyCache DummyCache is a placeholder cache component. yii\caching\ExpressionDependency ExpressionDependency represents a dependency based on the result of a PHP expression. yii\caching\FileCache FileCache implements a cache component using files. yii\caching\FileDependency FileDependency represents a dependency based on a file's last modification time. yii\caching\MemCache MemCache implements a cache application component based on memcache and memcached. yii\caching\MemCacheServer MemCacheServer represents the configuration data for a single memcache or memcached server. yii\caching\TagDependency TagDependency associates a cached data item with one or multiple $tags. yii\caching\WinCache WinCache provides Windows Cache caching in terms of an application component. yii\caching\XCache XCache provides XCache caching in terms of an application component. yii\caching\ZendDataCache ZendDataCache provides Zend data caching in terms of an application component. yii\captcha\Captcha Captcha 顯示一個驗證碼圖片和接收用戶輸入的驗證碼的輸入框。 yii\captcha\CaptchaAction CaptchaAction 顯示一個驗證碼圖片。 yii\captcha\CaptchaAsset This asset bundle provides the javascript files needed for the yii\captcha\Captcha widget. yii\captcha\CaptchaValidator CaptchaValidator validates that the attribute value is the same as the verification code displayed in the CAPTCHA. yii\console\Application Application represents a console application. yii\console\Controller Controller is the base class of console command classes. yii\console\ErrorHandler ErrorHandler handles uncaught PHP errors and exceptions. yii\console\Exception Exception represents an exception caused by incorrect usage of a console command. yii\console\Markdown A Markdown parser that enhances markdown for reading in console environments. yii\console\Request The console Request represents the environment information for a console application. yii\console\Response The console Response represents the result of a console application. yii\console\controllers\AssetController Allows you to combine and compress your JavaScript and CSS files. yii\console\controllers\BaseMigrateController BaseMigrateController is base class for migrate controllers. yii\console\controllers\CacheController 允許你來刷新緩存。 yii\console\controllers\FixtureController Manages fixture data loading and unloading. yii\console\controllers\HelpController 提供關於控制台命令的錯誤信息。 yii\console\controllers\MessageController Extracts messages to be translated from source files. yii\console\controllers\MigrateController Manages application migrations. yii\data\ActiveDataProvider ActiveDataProvider implements a data provider based on yii\db\Query and yii\db\ActiveQuery. yii\data\ArrayDataProvider ArrayDataProvider implements a data provider based on a data array. yii\data\BaseDataProvider BaseDataProvider provides a base class that implements the yii\data\DataProviderInterface. yii\data\DataProviderInterface DataProviderInterface is the interface that must be implemented by data provider classes. yii\data\Pagination Pagination represents information relevant to pagination of data items. yii\data\Sort Sort represents information relevant to sorting. yii\data\SqlDataProvider SqlDataProvider implements a data provider based on a plain SQL statement. yii\db\ActiveQuery ActiveQuery represents a DB query associated with an Active Record class. yii\db\ActiveQueryInterface ActiveQueryInterface defines the common interface to be implemented by active record query classes. yii\db\ActiveQueryTrait ActiveQueryTrait implements the common methods and properties for active record query classes. yii\db\ActiveRecord ActiveRecord is the base class for classes representing relational data in terms of objects. yii\db\ActiveRecordInterface ActiveRecordInterface yii\db\ActiveRelationTrait ActiveRelationTrait implements the common methods and properties for active record relational queries. yii\db\AfterSaveEvent AfterSaveEvent represents the information available in yii\db\ActiveRecord::EVENT_AFTER_INSERT and yii\db\ActiveRecord::EVENT_AFTER_UPDATE. yii\db\BaseActiveRecord ActiveRecord is the base class for classes representing relational data in terms of objects. yii\db\BatchQueryResult BatchQueryResult represents a batch query from which you can retrieve data in batches. yii\db\ColumnSchema ColumnSchema class describes the metadata of a column in a database table. yii\db\ColumnSchemaBuilder ColumnSchemaBuilder helps to define database schema types using a PHP interface. yii\db\Command Command represents a SQL statement to be executed against a database. yii\db\Connection Connection represents a connection to a database via PDO. yii\db\DataReader DataReader represents a forward-only stream of rows from a query result set. yii\db\Exception Exception represents an exception that is caused by some DB-related operations. yii\db\Expression Expression represents a DB expression that does not need escaping or quoting. yii\db\IntegrityException Exception represents an exception that is caused by violation of DB constraints. yii\db\Migration Migration is the base class for representing a database migration. yii\db\MigrationInterface The MigrationInterface defines the minimum set of methods to be implemented by a database migration. yii\db\Query Query represents a SELECT SQL statement in a way that is independent of DBMS. yii\db\QueryBuilder QueryBuilder builds a SELECT SQL statement based on the specification given as a yii\db\Query object. yii\db\QueryInterface The QueryInterface defines the minimum set of methods to be implemented by a database query. yii\db\QueryTrait The BaseQuery trait represents the minimum method set of a database Query. yii\db\Schema Schema is the base class for concrete DBMS-specific schema classes. yii\db\SchemaBuilderTrait SchemaBuilderTrait contains shortcut methods to create instances of yii\db\ColumnSchemaBuilder. yii\db\StaleObjectException   yii\db\TableSchema TableSchema represents the metadata of a database table. yii\db\Transaction Transaction 表示一個數據庫事務。 yii\db\cubrid\QueryBuilder QueryBuilder is the query builder for CUBRID databases (version 9.3.x and higher). yii\db\cubrid\Schema Schema is the class for retrieving metadata from a CUBRID database (version 9.3.x and higher). yii\db\mssql\PDO This is an extension of the default PDO class of MSSQL and DBLIB drivers. yii\db\mssql\QueryBuilder QueryBuilder is the query builder for MS SQL Server databases (version 2008 and above). yii\db\mssql\Schema Schema is the class for retrieving metadata from a MS SQL Server databases (version 2008 and above). yii\db\mssql\SqlsrvPDO This is an extension of the default PDO class of SQLSRV driver. yii\db\mssql\TableSchema TableSchema represents the metadata of a database table. yii\db\mysql\QueryBuilder QueryBuilder 是MySQL數據庫的查詢構建器。 yii\db\mysql\Schema Schema is the class for retrieving metadata from a MySQL database (version 4.1.x and 5.x). yii\db\oci\ColumnSchemaBuilder ColumnSchemaBuilder is the schema builder for Oracle databases. yii\db\oci\QueryBuilder QueryBuilder is the query builder for Oracle databases. yii\db\oci\Schema Schema is the class for retrieving metadata from an Oracle database yii\db\pgsql\QueryBuilder QueryBuilder is the query builder for PostgreSQL databases. yii\db\pgsql\Schema Schema is the class for retrieving metadata from a PostgreSQL database (version 9.x and above). yii\db\sqlite\QueryBuilder QueryBuilder is the query builder for SQLite databases. yii\db\sqlite\Schema Schema is the class for retrieving metadata from a SQLite (2/3) database. yii\di\Container Container implements a dependency injection container. yii\di\Instance Instance represents a reference to a named object in a dependency injection (DI) container or a service locator. yii\di\ServiceLocator ServiceLocator 實現了一個服務定位器。 yii\filters\AccessControl AccessControl provides simple access control based on a set of rules. yii\filters\AccessRule This class represents an access rule defined by the yii\filters\AccessControl action filter yii\filters\ContentNegotiator ContentNegotiator supports response format negotiation and application language negotiation. yii\filters\Cors Cors filter implements Cross Origin Resource Sharing. yii\filters\HttpCache HttpCache implements client-side caching by utilizing the Last-Modified and Etag HTTP headers. yii\filters\PageCache PageCache implements server-side caching of whole pages. yii\filters\RateLimitInterface RateLimitInterface is the interface that may be implemented by an identity object to enforce rate limiting. yii\filters\RateLimiter RateLimiter implements a rate limiting algorithm based on the leaky bucket algorithm. yii\filters\VerbFilter VerbFilter is an action filter that filters by HTTP request methods. yii\filters\auth\AuthInterface AuthInterface is the interface that should be implemented by auth method classes. yii\filters\auth\AuthMethod AuthMethod is a base class implementing the yii\filters\auth\AuthInterface interface. yii\filters\auth\CompositeAuth CompositeAuth is an action filter that supports multiple authentication methods at the same time. yii\filters\auth\HttpBasicAuth HttpBasicAuth is an action filter that supports the HTTP Basic authentication method. yii\filters\auth\HttpBearerAuth HttpBearerAuth is an action filter that supports the authentication method based on HTTP Bearer token. yii\filters\auth\QueryParamAuth QueryParamAuth is an action filter that supports the authentication based on the access token passed through a query parameter. yii\grid\ActionColumn ActionColumn is a column for the yii\grid\GridView widget that displays buttons for viewing and manipulating the items. yii\grid\CheckboxColumn CheckboxColumn displays a column of checkboxes in a grid view. yii\grid\Column Column is the base class of all yii\grid\GridView column classes. yii\grid\DataColumn DataColumn is the default column type for the yii\grid\GridView widget. yii\grid\GridView The GridView widget is used to display data in a grid. yii\grid\GridViewAsset This asset bundle provides the javascript files for the yii\grid\GridView widget. yii\grid\SerialColumn SerialColumn displays a column of row numbers (1-based). yii\helpers\ArrayHelper ArrayHelper provides additional array functionality that you can use in your application. yii\helpers\BaseArrayHelper BaseArrayHelper provides concrete implementation for yii\helpers\ArrayHelper. yii\helpers\BaseConsole BaseConsole provides concrete implementation for yii\helpers\Console. yii\helpers\BaseFileHelper BaseFileHelper provides concrete implementation for yii\helpers\FileHelper. yii\helpers\BaseFormatConverter BaseFormatConverter provides concrete implementation for yii\helpers\FormatConverter. yii\helpers\BaseHtml BaseHtml provides concrete implementation for yii\helpers\Html. yii\helpers\BaseHtmlPurifier BaseHtmlPurifier provides concrete implementation for yii\helpers\HtmlPurifier. yii\helpers\BaseInflector BaseInflector provides concrete implementation for yii\helpers\Inflector. yii\helpers\BaseJson BaseJson provides concrete implementation for yii\helpers\Json. yii\helpers\BaseMarkdown BaseMarkdown provides concrete implementation for yii\helpers\Markdown. yii\helpers\BaseStringHelper BaseStringHelper provides concrete implementation for yii\helpers\StringHelper. yii\helpers\BaseUrl BaseUrl provides concrete implementation for yii\helpers\Url. yii\helpers\BaseVarDumper BaseVarDumper provides concrete implementation for yii\helpers\VarDumper. yii\helpers\Console Console helper provides useful methods for command line related tasks such as getting input or formatting and coloring output. yii\helpers\FileHelper File system helper yii\helpers\FormatConverter FormatConverter provides functionality to convert between different formatting pattern formats. yii\helpers\Html Html provides a set of static methods for generating commonly used HTML tags. yii\helpers\HtmlPurifier HtmlPurifier provides an ability to clean up HTML from any harmful code. yii\helpers\Inflector Inflector pluralizes and singularizes English nouns. It also contains some other useful methods. yii\helpers\Json Json is a helper class providing JSON data encoding and decoding. yii\helpers\Markdown Markdown provides an ability to transform markdown into HTML. yii\helpers\StringHelper StringHelper yii\helpers\Url Url provides a set of static methods for managing URLs. yii\helpers\VarDumper VarDumper is intended to replace the buggy PHP function var_dump and print_r. yii\i18n\DbMessageSource DbMessageSource extends yii\i18n\MessageSource and represents a message source that stores translated messages in database. yii\i18n\Formatter Formatter provides a set of commonly used data formatting methods. yii\i18n\GettextFile GettextFile is the base class for representing a Gettext message file. yii\i18n\GettextMessageSource GettextMessageSource represents a message source that is based on GNU Gettext. yii\i18n\GettextMoFile GettextMoFile represents an MO Gettext message file. yii\i18n\GettextPoFile GettextPoFile represents a PO Gettext message file. yii\i18n\I18N I18N provides features related with internationalization (I18N) and localization (L10N). yii\i18n\MessageFormatter MessageFormatter allows formatting messages via ICU message format yii\i18n\MessageSource MessageSource is the base class for message translation repository classes. yii\i18n\MissingTranslationEvent MissingTranslationEvent represents the parameter for the yii\i18n\MessageSource::EVENT_MISSING_TRANSLATION event. yii\i18n\PhpMessageSource PhpMessageSource represents a message source that stores translated messages in PHP scripts. yii\log\DbTarget DbTarget stores log messages in a database table. yii\log\Dispatcher Dispatcher manages a set of log targets. yii\log\EmailTarget EmailTarget sends selected log messages to the specified email addresses. yii\log\FileTarget FileTarget records log messages in a file. yii\log\Logger Logger records logged messages in memory and sends them to different targets if $dispatcher is set. yii\log\SyslogTarget SyslogTarget writes log to syslog. yii\log\Target Target is the base class for all log target classes. yii\mail\BaseMailer BaseMailer serves as a base class that implements the basic functions required by yii\mail\MailerInterface. yii\mail\BaseMessage BaseMessage serves as a base class that implements the send() method required by yii\mail\MessageInterface. yii\mail\MailEvent MailEvent represents the event parameter used for events triggered by yii\mail\BaseMailer. yii\mail\MailerInterface MailerInterface is the interface that should be implemented by mailer classes. yii\mail\MessageInterface MessageInterface is the interface that should be implemented by mail message classes. yii\mutex\DbMutex DbMutex is the base class for classes, which relies on database while implementing mutex "lock" mechanism. yii\mutex\FileMutex FileMutex implements mutex "lock" mechanism via local file system files. yii\mutex\Mutex Mutex component allows mutual execution of the concurrent processes, preventing "race conditions". yii\mutex\MysqlMutex MysqlMutex implements mutex "lock" mechanism via MySQL locks. yii\rbac\Assignment Assignment represents an assignment of a role to a user. yii\rbac\BaseManager BaseManager is a base class implementing yii\rbac\ManagerInterface for RBAC management. yii\rbac\DbManager DbManager represents an authorization manager that stores authorization information in database. yii\rbac\Item   yii\rbac\ManagerInterface   yii\rbac\Permission   yii\rbac\PhpManager PhpManager represents an authorization manager that stores authorization information in terms of a PHP script file. yii\rbac\Role   yii\rbac\Rule Rule represents a business constraint that may be associated with a role, permission or assignment. yii\rest\Action Action is the base class for action classes that implement RESTful API. yii\rest\ActiveController ActiveController implements a common set of actions for supporting RESTful access to ActiveRecord. yii\rest\Controller Controller is the base class for RESTful API controller classes. yii\rest\CreateAction CreateAction implements the API endpoint for creating a new model from the given data. yii\rest\DeleteAction DeleteAction implements the API endpoint for deleting a model. yii\rest\IndexAction   yii\rest\OptionsAction OptionsAction responds to the OPTIONS request by sending back an Allow header. yii\rest\Serializer Serializer converts resource objects and collections into array representation. yii\rest\UpdateAction UpdateAction implements the API endpoint for updating a model. yii\rest\UrlRule UrlRule is provided to simplify the creation of URL rules for RESTful API support. yii\rest\ViewAction ViewAction implements the API endpoint for returning the detailed information about a model. yii\test\ActiveFixture ActiveFixture represents a fixture backed up by a ActiveRecord class or a database table. yii\test\ArrayFixture ArrayFixture represents arbitrary fixture that can be loaded from PHP files. yii\test\BaseActiveFixture BaseActiveFixture is the base class for fixture classes that support accessing fixture data as ActiveRecord objects. yii\test\DbFixture DbFixture is the base class for DB-related fixtures. yii\test\Fixture Fixture represents a fixed state of a test environment. yii\test\FixtureTrait FixtureTrait provides functionalities for loading, unloading and accessing fixtures for a test case. yii\test\InitDbFixture InitDbFixture represents the initial state needed for DB-related tests. yii\validators\BooleanValidator BooleanValidator checks if the attribute value is a boolean value. yii\validators\CompareValidator CompareValidator compares the specified attribute value with another value. yii\validators\DateValidator DateValidator verifies if the attribute represents a date, time or datetime in a proper $format. yii\validators\DefaultValueValidator DefaultValueValidator sets the attribute to be the specified default value. yii\validators\EachValidator EachValidator validates an array by checking each of its elements against an embedded validation rule. yii\validators\EmailValidator EmailValidator validates that the attribute value is a valid email address. yii\validators\ExistValidator ExistValidator validates that the attribute value exists in a table. yii\validators\FileValidator FileValidator verifies if an attribute is receiving a valid uploaded file. yii\validators\FilterValidator FilterValidator converts the attribute value according to a filter. yii\validators\ImageValidator ImageValidator verifies if an attribute is receiving a valid image. yii\validators\InlineValidator InlineValidator represents a validator which is defined as a method in the object being validated. yii\validators\NumberValidator NumberValidator validates that the attribute value is a number. yii\validators\PunycodeAsset This asset bundle provides the javascript files needed for the yii\validators\EmailValidators client validation. yii\validators\RangeValidator RangeValidator validates that the attribute value is among a list of values. yii\validators\RegularExpressionValidator RegularExpressionValidator validates that the attribute value matches the specified $pattern. yii\validators\RequiredValidator RequiredValidator 驗證指定屬性不是空或null。 yii\validators\SafeValidator SafeValidator serves as a dummy validator whose main purpose is to mark the attributes to be safe for massive assignment. yii\validators\StringValidator StringValidator 驗證屬性值符合一定長度。 yii\validators\UniqueValidator UniqueValidator 驗證屬性值在指定數據庫表中是唯一的。 yii\validators\UrlValidator UrlValidator 驗證屬性值是否為有效的http或https URL。 yii\validators\ValidationAsset 此資源包提供了客戶端驗證所需的js文件。 yii\validators\Validator Validator 是所有驗證器類的基類。 yii\web\Application Application是所有web應用程序類的基類。 yii\web\AssetBundle AssetBundle 表示一組資源文件的集合， 如 CSS, JS, images. yii\web\AssetConverter AssetConverter supports conversion of several popular script formats into JS or CSS scripts. yii\web\AssetConverterInterface The AssetConverterInterface must be implemented by asset converter classes. yii\web\AssetManager AssetManager manages asset bundle configuration and loading. yii\web\BadRequestHttpException BadRequestHttpException represents a "Bad Request" HTTP exception with status code 400. yii\web\CacheSession CacheSession implements a session component using cache as storage medium. yii\web\CompositeUrlRule CompositeUrlRule is the base class for URL rule classes that consist of multiple simpler rules. yii\web\ConflictHttpException ConflictHttpException represents a "Conflict" HTTP exception with status code 409 yii\web\Controller Controller is the base class of web controllers. yii\web\Cookie Cookie 表示一個cookie關聯的信息，如 $name, $value, $domain, 等等. yii\web\CookieCollection CookieCollection 保持當前請求中的cookies可用。 yii\web\DbSession DbSession extends yii\web\Session by using database as session data storage. yii\web\ErrorAction ErrorAction 使用指定視圖顯示應用程序錯誤。 yii\web\ErrorHandler ErrorHandler 處理未捕獲的錯誤和異常。 yii\web\ForbiddenHttpException ForbiddenHttpException represents a "Forbidden" HTTP exception with status code 403. yii\web\GoneHttpException GoneHttpException represents a "Gone" HTTP exception with status code 410 yii\web\GroupUrlRule GroupUrlRule represents a collection of URL rules sharing the same prefix in their patterns and routes. yii\web\HeaderCollection HeaderCollection is used by yii\web\Response to maintain the currently registered HTTP headers. yii\web\HtmlResponseFormatter HtmlResponseFormatter formats the given data into an HTML response content. yii\web\HttpException HttpException represents an exception caused by an improper request of the end-user. yii\web\IdentityInterface IdentityInterface is the interface that should be implemented by a class providing identity information. yii\web\JqueryAsset This asset bundle provides the jquery javascript library yii\web\JsExpression JsExpression marks a string as a JavaScript expression. yii\web\JsonParser Parses a raw HTTP request using yii\helpers\Json::decode() yii\web\JsonResponseFormatter JsonResponseFormatter formats the given data into a JSON or JSONP response content. yii\web\Link Link represents a link object as defined in JSON Hypermedia API Language. yii\web\Linkable Linkable is the interface that should be implemented by classes that typically represent locatable resources. yii\web\MethodNotAllowedHttpException MethodNotAllowedHttpException represents a "Method Not Allowed" HTTP exception with status code 405. yii\web\MultiFieldSession MultiFieldSession is the base class for session storage implementations with multi-field data storage support. yii\web\NotAcceptableHttpException NotAcceptableHttpException represents a "Not Acceptable" HTTP exception with status code 406 yii\web\NotFoundHttpException NotFoundHttpException represents a "Not Found" HTTP exception with status code 404. yii\web\Request The web Request class represents an HTTP request yii\web\RequestParserInterface Interface for classes that parse the raw request body into a parameters array. yii\web\Response The web Response class represents an HTTP response yii\web\ResponseFormatterInterface ResponseFormatterInterface specifies the interface needed to format a response before it is sent out. yii\web\ServerErrorHttpException ServerErrorHttpException represents an "Internal Server Error" HTTP exception with status code 500. yii\web\Session Session provides session data management and the related configurations. yii\web\SessionIterator SessionIterator implements an iterator for traversing session variables managed by yii\web\Session. yii\web\TooManyRequestsHttpException TooManyRequestsHttpException represents a "Too Many Requests" HTTP exception with status code 429 yii\web\UnauthorizedHttpException UnauthorizedHttpException represents an "Unauthorized" HTTP exception with status code 401 yii\web\UnprocessableEntityHttpException UnprocessableEntityHttpException represents an "Unprocessable Entity" HTTP exception with status code 422. yii\web\UnsupportedMediaTypeHttpException UnsupportedMediaTypeHttpException represents an "Unsupported Media Type" HTTP exception with status code 415 yii\web\UploadedFile UploadedFile represents the information for an uploaded file. yii\web\UrlManager UrlManager handles HTTP request parsing and creation of URLs based on a set of rules. yii\web\UrlRule UrlRule represents a rule used by yii\web\UrlManager for parsing and generating URLs. yii\web\UrlRuleInterface UrlRuleInterface is the interface that should be implemented URL rule classes. yii\web\User User is the class for the "user" application component that manages the user authentication status. yii\web\UserEvent This event class is used for Events triggered by the yii\web\User class. yii\web\View View represents a view object in the MVC pattern. yii\web\ViewAction ViewAction represents an action that displays a view according to a user-specified parameter. yii\web\XmlResponseFormatter XmlResponseFormatter formats the given data into an XML response content. yii\web\YiiAsset This asset bundle provides the base javascript files for the Yii Framework. yii\widgets\ActiveField ActiveField represents a form input field within an yii\widgets\ActiveForm. yii\widgets\ActiveForm ActiveForm is a widget that builds an interactive HTML form for one or multiple data models. yii\widgets\ActiveFormAsset   yii\widgets\BaseListView BaseListView is a base class for widgets displaying data from data provider such as ListView and GridView. yii\widgets\Block Block records all output between begin() and end() calls and stores it in yii\base\View::$blocks. yii\widgets\Breadcrumbs Breadcrumbs displays a list of links indicating the position of the current page in the whole site hierarchy. yii\widgets\ContentDecorator ContentDecorator records all output between begin() and end() calls, passes it to the given view file as $content and then echoes rendering result. yii\widgets\DetailView DetailView displays the detail of a single data $model. yii\widgets\FragmentCache FragmentCache is used by yii\base\View to provide caching of page fragments. yii\widgets\InputWidget InputWidget is the base class for widgets that collect user inputs. yii\widgets\LinkPager LinkPager displays a list of hyperlinks that lead to different pages of target. yii\widgets\LinkSorter LinkSorter renders a list of sort links for the given sort definition. yii\widgets\ListView The ListView widget is used to display data from data provider. Each data model is rendered using the view specified. yii\widgets\MaskedInput MaskedInput generates a masked text input. yii\widgets\MaskedInputAsset The asset bundle for the yii\widgets\MaskedInput widget. yii\widgets\Menu Menu displays a multi-level menu using nested HTML lists. yii\widgets\Pjax Pjax is a widget integrating the pjax jQuery plugin. yii\widgets\PjaxAsset This asset bundle provides the javascript files required by yii\widgets\Pjax widget. yii\widgets\Spaceless Spaceless widget removes whitespace characters between HTML tags. Whitespaces within HTML tags or in a plain text are always left untouched.