What's the best way to get the current request URL

[Ryan Donahue]

I want to capture the the current request URL, so I can redirect back
to it at a later point. What's the best way to get at the URL? The
answer is probably obvious, but I can't seem to find it.

Thanks,

Ryan

[harryh]

S.uri

[Ryan Donahue]

Does that include the query string?

[David Pollak]

On Wed, Sep 16, 2009 at 8:33 AM, Ryan Donahue <dona...@gmail.com> wrote:

Does that include the query string?

No.
 

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[wm]

Ok, we know it's "No".

Then the next natural question is:

how to get the current request URL _with_ the whole query string?

[wm]

uriAndQueryString: Box[String]?

why its return type is Box[String] instead of just String?

[Matt Farmer]

I believe it’s a Box[String] because you could access that from outside the context of a request. So, for example, if you try to read that value from an actor you’d see Empty.

This is a bit confusing given that uri won’t return Empty in the same case. That’s probably an inconsistency that should be resolved at some point soon.

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[Brett Grace]

Well, I suppose because there may not be one—you can access the S object outside of an HTTP request/response cycle. One could as well ask why uri doesn't
 return a Box/Option. If you look at the code it handles the Empty/None case with a default of "/" in just those cases. I suspect this is very old code in Lift so there may not be a consistent rationalization.

Oh, if you look at the comments for this code, it suggests a way to get the raw URI + query string (I believe Lift omits the application context):

* If you want the full URI, including the context path, you should retrieve it
* from the underlying HTTPRequest. You could do something like:
*
* <pre name="code" class="scala" >
*   val fullURI = S.request.map(_.request.getRequestURI) openOr ("Undefined")
* </pre>

[wm]

[error]

value getRequestURI is not a member of net.liftweb.http.provider.HTTPRequest

[Antonio Salazar Cardozo]

Try just `uri` instead of `getRequestURI`. If that works, I'll update the docs.

Thanks,

Antonio