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Interface Yiisoft\HttpMiddleware\HttpCache\ETagProvider\ETagProviderInterface

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Implemented byYiisoft\HttpMiddleware\HttpCache\ETagProvider\NullETagProvider, Yiisoft\HttpMiddleware\HttpCache\ETagProvider\PredefinedETagProvider

Obtains {@see ETag} for a given server request.

Public Methods

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Method Description Defined By
get() Returns an {@see ETag} instance for the given server request. Yiisoft\HttpMiddleware\HttpCache\ETagProvider\ETagProviderInterface

Method Details

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get() public abstract method

Returns an {@see ETag} instance for the given server request.

public abstract Yiisoft\HttpMiddleware\HttpCache\ETag|null get ( \Psr\Http\Message\ServerRequestInterface $request )
$request \Psr\Http\Message\ServerRequestInterface

The server request for which to generate the ETag.
return Yiisoft\HttpMiddleware\HttpCache\ETag|null

Instance of {@see \Yiisoft\HttpMiddleware\HttpCache\ETag} or null if no ETag can be generated for the request.

 

                public function get(ServerRequestInterface $request): ?ETag;