[Lift] Re: Showing a Box or Redirecting?
Thanks, guys. I've done something similar to what Marius provided. I
thought about using an implicit, but I did not think it would be
immediately obvious for someone else to realize what was going on in
showA -- without the introduction of some implicit conversion
indicator in my IDE.
Thanks,
Bryan
On Jun 1, 12:10 am, David Pollak
wrote:
> class SomeSnippet {
> implicit def boxOpener(in: Box[NodeSeq]): NodeSeq = in openOr
> {S.error("Inactive"); S.redirectTo(S.referer openOr "/")}
>
> def showA(xhtml: NodeSeq): NodeSeq =
> for {
> id <- S.param("id")
> info <- session1.get(id)
> } yield bind("foo", xhtml, "thing" -> info.x)
>
> }
>
> The implicit makes the Box[NodeSeq] turn into a NodeSeq or redirects the
> user.
>
> Thanks,
>
> David
>
>
>
> On Sat, May 30, 2009 at 6:12 PM, Bryan wrote:
>
> > If Foo has 5 methods that I need to show in a Snippet (scattered
> > throughout the template), what's a good way to S.error("inactive");
> > S.redirectTo("/") whenever Box[Foo] cannot be opened because it is not
> > Full, without having to write a bunch of boiler plate code for each of
> > the show methods I have defined below.
>
> > class SomeSnippet {
> > val foo: Box[Foo] = tryo(session1.get(S.param("id").getOrElse("")))
>
> > def showA(xhtml: NodeSeq): NodeSeq = ...
> > def showB(xhtml: NodeSeq): NodeSeq = ...
> > def showC(xhtml: NodeSeq): NodeSeq = ...
> > def showD(xhtml: NodeSeq): NodeSeq = ...
> > def showE(xhtml: NodeSeq): NodeSeq = ...
> > }
>
> > Thanks,
> > Bryan
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net
> Beginning Scalahttp://www.apress.com/book/view/1430219890
> Follow me:http://twitter.com/dpp
> Git some:http://github.com/dpp
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[Lift] Re: Showing a Box or Redirecting?
class SomeSnippet {
implicit def boxOpener(in: Box[NodeSeq]): NodeSeq = in openOr
{S.error("Inactive"); S.redirectTo(S.referer openOr "/")}
def showA(xhtml: NodeSeq): NodeSeq =
for {
id <- S.param("id")
info <- session1.get(id)
} yield bind("foo", xhtml, "thing" -> info.x)
}
The implicit makes the Box[NodeSeq] turn into a NodeSeq or redirects the
user.
Thanks,
David
On Sat, May 30, 2009 at 6:12 PM, Bryan wrote:
>
> If Foo has 5 methods that I need to show in a Snippet (scattered
> throughout the template), what's a good way to S.error("inactive");
> S.redirectTo("/") whenever Box[Foo] cannot be opened because it is not
> Full, without having to write a bunch of boiler plate code for each of
> the show methods I have defined below.
>
> class SomeSnippet {
> val foo: Box[Foo] = tryo(session1.get(S.param("id").getOrElse("")))
>
> def showA(xhtml: NodeSeq): NodeSeq = ...
> def showB(xhtml: NodeSeq): NodeSeq = ...
> def showC(xhtml: NodeSeq): NodeSeq = ...
> def showD(xhtml: NodeSeq): NodeSeq = ...
> def showE(xhtml: NodeSeq): NodeSeq = ...
> }
>
> Thanks,
> Bryan
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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[Lift] Re: Showing a Box or Redirecting?
class SomeSnippet {
val foo: Box[Foo] = tryo(session1.get(S.param("id").getOrElse
(""))) // But I think with this code you'll always get a Full Box due
to getOrElse ?
def render(func: foo => NodeSeq) = foo.map(l => func(l)) openOr
(your code in case foo is empty and potentially return NodeSeq.Empty)
def showA(xhtml: NodeSeq): NodeSeq = render {
myFoo => ...
}
def showB(xhtml: NodeSeq): NodeSeq = render {
myFoo => ...
}.
def showC(xhtml: NodeSeq): NodeSeq = render {
myFoo => ...
}
def showD(xhtml: NodeSeq): NodeSeq = render {
myFoo => ...
}
def showE(xhtml: NodeSeq): NodeSeq = render {
myFoo => ...
}
}
On May 31, 4:40 am, "Bryan." wrote:
> I guess I should just have def showFoo(xhtml: NodeSeq) and use bind to
> render A, B, C, D, and E.
>
> --Bryan
>
> On May 30, 9:12 pm, Bryan wrote:
>
> > If Foo has 5 methods that I need to show in a Snippet (scattered
> > throughout the template), what's a good way to S.error("inactive");
> > S.redirectTo("/") whenever Box[Foo] cannot be opened because it is not
> > Full, without having to write a bunch of boiler plate code for each of
> > the show methods I have defined below.
>
> > class SomeSnippet {
> > val foo: Box[Foo] = tryo(session1.get(S.param("id").getOrElse("")))
>
> > def showA(xhtml: NodeSeq): NodeSeq = ...
> > def showB(xhtml: NodeSeq): NodeSeq = ...
> > def showC(xhtml: NodeSeq): NodeSeq = ...
> > def showD(xhtml: NodeSeq): NodeSeq = ...
> > def showE(xhtml: NodeSeq): NodeSeq = ...
>
> > }
>
> > Thanks,
> > Bryan
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[Lift] Re: Showing a Box or Redirecting?
I guess I should just have def showFoo(xhtml: NodeSeq) and use bind to
render A, B, C, D, and E.
--Bryan
On May 30, 9:12 pm, Bryan wrote:
> If Foo has 5 methods that I need to show in a Snippet (scattered
> throughout the template), what's a good way to S.error("inactive");
> S.redirectTo("/") whenever Box[Foo] cannot be opened because it is not
> Full, without having to write a bunch of boiler plate code for each of
> the show methods I have defined below.
>
> class SomeSnippet {
> val foo: Box[Foo] = tryo(session1.get(S.param("id").getOrElse("")))
>
> def showA(xhtml: NodeSeq): NodeSeq = ...
> def showB(xhtml: NodeSeq): NodeSeq = ...
> def showC(xhtml: NodeSeq): NodeSeq = ...
> def showD(xhtml: NodeSeq): NodeSeq = ...
> def showE(xhtml: NodeSeq): NodeSeq = ...
>
> }
>
> Thanks,
> Bryan
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