codebright

Responses 67
object actually inherits most of its content from the Response object belonging to the Symfony
HTTPFoundation component.
What this means is that if we take a look at the API for the Symfony response object, suddenly we
have access to a whole heap of extra methods that aren’t covered in the Laravel docs! Holy smokes!
Now that I have given away this secret, there’s nothing to stop you from becoming a Laravel master!
The API documentation for the Symfony Response object can be found here¹⁹. If you look at the page
you will notice that the class has an attribute called $headers. That’s right! That’s the collection of
headers we were using only a minute ago.
Since the Laravel response object inherits from this one, feel free to use any of the methods you see
in the Symfony API documentation. For example, let’s have a look at the setTtl() method. What
does the API say?
public Response setTtl(**integer $seconds**)
Sets the response’s time-to-live for shared caches. This method adjusts the Cache-Control/s-maxage
directive.
Parameters:
integer $seconds Number of seconds
Return Value:
Response
Right, so this method sets the time-to-live value for shared caches. I’m no expert on this kind of
thing, but a time to live suggests how long a piece of information is considered useful before it is
discarded. In this instance the TTL relates to the content caching.
Let’s give it a value for funsies. Having looked at the method signature, we see that it accepts an
integer representing the time-to-live value in seconds. Let’s give this response 60 seconds to live.
Like some kind of cruel James Bond villain.
¹⁹http://api.symfony.com/2.2/Symfony/Component/HttpFoundation/Response.html“TheSymfonyResponseObject”