[Lift] Re: About the url rewrite (more thant one params and get 404 not found error)
OK, Got it, Thank you very much!
On Mar 2, 3:01 am, David Pollak wrote:
> On Sun, Feb 28, 2010 at 8:28 PM, Neil.Lv wrote:
> > Hi all,
>
> > I have a silly question about the url rewrite in the lift.
> > It has another two params in the url after the img.
>
> > http://localhost:8080/show/img/version/id
>
> > The url works fine.
> > =>http://localhost:8080/show/img
> > =>http://localhost:8080/show/img/v1/
> > =>http://localhost:8080/show/img/v1/1
>
> > Get 404 error if the "/" string is not added at the end of the url
> > (the id param isn't supplied)
> > =>http://localhost:8080/show/img/v1
>
> > So, how can i rewrite the url and set the sitemap can make this link
> > ( http://localhost:8080/show/img/v1 )
> > works fine as ( http://localhost:8080/show/img/v1/ ) when the id
> > is not supplied.
>
> > Here is the code:
>
> > ###
> > case RewriteRequest(
> > ParsePath(List("show", "img", version, id), _, _,_), _, _) =>
> >RewriteResponse(List("show", "img"),
> > Map("version" -> version, "id" -> id)
> > )
> > ###
>
> This is just basic pattern matching stuff. So,
>
> case RewriteRequest(
> ParsePath("show" :: "img" :: version :: rest, _, _,_), _, _) =>
> RewriteResponse(List("show", "img"),
> Map("version" -> version, "id" -> (rest.firstOption getOrElse "N/A"))
> )
>
> Please pick up a copy of one of the Scala books and look at the pattern
> matching section related to Lists. There's a lot of flexibility that's no
> Lift-specific, but that Lift leverages.
>
> val entries = Menu(Loc("Home", List("index"), "Home")) ::
>
>
>
> > Menu(Loc("show", List("show"), "show", Hidden)) :: User.sitemap
>
> > ###
>
> > BTW, I use the LiftView to handle the request.
>
> > ###
> > class show extends LiftView {
> > def dispatch = {
> >case "img" => imgDispatch _
> >case _ => allDispatch _
> > }
>
> > def imgDispatch(): Box[NodeSeq] = {
> >...
> > }
>
> > def allDispatch(): Box[NodeSeq] = {
> >...
> > }
> > }
> > ###
>
> > Thanks very much!
>
> > Cheers,
> > Neil
>
> > --
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>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
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[Lift] Re: About the url rewrite (more thant one params and get 404 not found error)
I add these code in the Boot class, but it doesn't work.
How can write the correct code to parse the url ?
#
object ParamsExtractor {
def unapply(pp: ParsePath): Option[(String)] = {
Log.info("wholePath: " + pp.wholePath)
val path = List("test")
val result:Box[(String)] = if (pp.wholePath.startsWith(path) &&
pp.wholePath.length == (path.length + 2)) {
val res = Full(("test2"))
Log.info("Decoded URL: %s=%s".format(pp, res))
res
} else None
Log.info("result: " + result)
result
}
}
class Boot {
def boot {
...
LiftRules.statelessRewrite.prepend {
case RewriteRequest(ParamsExtractor(param) , _, _) =>
RewriteResponse(List("test"), Map("param" -> param))
}
...
}
}
#
Thanks!~~
Cheers,
Neil
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[Lift] Re: About the url rewrite (more thant one params and get 404 not found error)
On Mar 1, 5:10 pm, Jeppe Nejsum Madsen wrote:
> Ahh yes, the example was from a Loc rewrite, The principle is the same I
> guess, you should be able to do something like this:
>
> case RewriteRequest(ParamsExtractor(account,orgUnit) , _, _) =>
> RewriteResponse(path, Map("account" -> account, "orgUnit" -> orgUnit))
>
> The important part is the extractor which takes care of parsing the
> request into meaningful values...
>
> /Jeppe
Got it, thanks for your reply.
I'll try it later.
:)
Cheers,
Neil
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Re: [Lift] Re: About the url rewrite (more thant one params and get 404 not found error)
"Neil.Lv" writes:
> On Mar 1, 3:53 pm, Jeppe Nejsum Madsen wrote:
>>
>> I'm not sure if this can be handled with the standard ParsePath, but it
>> is fairly easy to write your own extractor that can handle more complex
>> scenarios. Here's an example:
>>
>> object ParamsExtractor {
>> def unapply(pp:ParsePath): Option[(Account, OrgUnit)] = {
>> val result:Box[(Account, OrgUnit)] = if
>> (pp.wholePath.startsWith(path) && pp.wholePath.length == (path.length + 2)) {
>> val res = Full((XX,YY))
>> debug("Decoded URL: %s=%s".format(pp,res))
>> res
>> }
>> else
>> None
>> result
>> }
>> }
>> used like this:
>>
>> case RewriteRequest(ParamsExtractor(account,orgUnit) , _, _) =>
>> (RewriteResponse(path), Full(account, orgUnit))
>
> I have some question about these code that i don't understand.
>
> The first one that contains the Map() in the RewriteResponse() .
>-->
>case RewriteRequest() => RewriteResponse()
>
> but the second one that doesn't contain the Map in the
> RewriteResponse(),
> what's the mean of the Full(account, orgUnit) in the
> ( RewriteResponse(path), Full(account, orgUnit) )
>-->
>case RewriteRequest() => ( RewriteResponse(), Full() )
Ahh yes, the example was from a Loc rewrite, The principle is the same I
guess, you should be able to do something like this:
case RewriteRequest(ParamsExtractor(account,orgUnit) , _, _) =>
RewriteResponse(path, Map("account" -> account, "orgUnit" -> orgUnit))
The important part is the extractor which takes care of parsing the
request into meaningful values...
/Jeppe
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[Lift] Re: About the url rewrite (more thant one params and get 404 not found error)
On Mar 1, 3:53 pm, Jeppe Nejsum Madsen wrote:
>
> I'm not sure if this can be handled with the standard ParsePath, but it
> is fairly easy to write your own extractor that can handle more complex
> scenarios. Here's an example:
>
> object ParamsExtractor {
> def unapply(pp:ParsePath): Option[(Account, OrgUnit)] = {
> val result:Box[(Account, OrgUnit)] = if
> (pp.wholePath.startsWith(path) && pp.wholePath.length == (path.length + 2)) {
> val res = Full((XX,YY))
> debug("Decoded URL: %s=%s".format(pp,res))
> res
> }
> else
> None
> result
> }
> }
> used like this:
>
> case RewriteRequest(ParamsExtractor(account,orgUnit) , _, _) =>
> (RewriteResponse(path), Full(account, orgUnit))
I have some question about these code that i don't understand.
The first one that contains the Map() in the RewriteResponse() .
-->
case RewriteRequest() => RewriteResponse()
but the second one that doesn't contain the Map in the
RewriteResponse(),
what's the mean of the Full(account, orgUnit) in the
( RewriteResponse(path), Full(account, orgUnit) )
-->
case RewriteRequest() => ( RewriteResponse(), Full() )
###
case RewriteRequest(
ParsePath(List("show", "img", version, id), _, _,_), _, _) =>
RewriteResponse(List("show", "img"),
Map("version" -> version, "id" -> id)
)
case RewriteRequest(
ParamsExtractor(account,orgUnit) , _, _) =>
( RewriteResponse(path), Full(account, orgUnit) )
###
Thank you very much.
Cheers,
Neil
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