class ChangeDetectionMiddleware implements HTTPMiddleware (View source)

Handles internal change detection via etag / ifmodifiedsince headers, conditionally sending a 304 not modified if possible.

Traits

A class that can be instantiated or replaced via DI

Methods

public static 
create(mixed ...$args)

An implementation of the factory method, allows you to create an instance of a class

public static 
singleton(string $class = null)

Creates a class instance by the "singleton" design pattern.

public
process(HTTPRequest $request, callable $delegate)

Generate response for the given request

protected
string|false
generateETag(HTTPResponse $response)

No description

protected
mixed
sendNotModified(HTTPRequest $request, HTTPResponse $response)

Sent not-modified response

Details

static Injectable create(mixed ...$args)

An implementation of the factory method, allows you to create an instance of a class

This method will defer class substitution to the Injector API, which can be customised via the Config API to declare substitution classes.

This can be called in one of two ways - either calling via the class directly, or calling on Object and passing the class name as the first parameter. The following are equivalent: $list = DataList::create(SiteTree::class); $list = SiteTree::get();

Parameters

mixed ...$args

Return Value

Injectable

static Injectable singleton(string $class = null)

Creates a class instance by the "singleton" design pattern.

It will always return the same instance for this class, which can be used for performance reasons and as a simple way to access instance methods which don't rely on instance data (e.g. the custom SilverStripe static handling).

Parameters

string $class

Optional classname to create, if the called class should not be used

Return Value

Injectable

The singleton instance

HTTPResponse process(HTTPRequest $request, callable $delegate)

Generate response for the given request

Parameters

HTTPRequest $request
callable $delegate

Return Value

HTTPResponse

protected string|false generateETag(HTTPResponse $response)

No description

Parameters

HTTPResponse $response

Return Value

string|false

protected mixed sendNotModified(HTTPRequest $request, HTTPResponse $response)

Sent not-modified response

Parameters

HTTPRequest $request
HTTPResponse $response

Return Value

mixed