Hi Ross,
Thanks for the code - however it didn't compile on my machine, why is
that?
Also I cannot get it to show a menu, can you take a brief look at my
code, whats the problem? I notice supplimentalKidMenuItems gets called
every time the page is rendered so thats a positive, but no menu items
added to the page. Obviously I am a beginner, don't know why I had to
change Unit to NullLocParams to get it to compile.
I am on <scala.version>2.7.5</scala.version>
Lift version <version>1.1-M6</version>
I changed code to:
case class DynMenuLoc (
override val name: String,
override val link: Link[NullLocParams],
override val text: LinkText[NullLocParams],
_params: LocParam* ) extends Loc[NullLocParams] {
override val params = _params.toList
// had to comment this out: override val defaultValue = Full(())
// not sure what to set this to
override val defaultParams = Empty
override def supplimentalKidMenuItems:List
[net.liftweb.sitemap.MenuItem] = {
Log.info("kid menu function called")
var result:ListBuffer[net.liftweb.sitemap.MenuItem] = new
ListBuffer[net.liftweb.sitemap.MenuItem]
result + (new MenuItem(Text("A"), Text("B"), Nil, false, false,
Nil))
result.toList ::: super.supplimentalKidMenuItems
}
}
def menu: List[Menu] =
{
Menu(Loc("home", List("index"), "Home")) ::
Menu(DynMenuLoc("Dynamic Menu", Link(List("dynamic"), true, "/
dynamic"), "Dynamic Menu")) :: Nil
}
Thanks, Philip
On 11月21日, 下午2時56分, Ross Mellgren <dri...@gmail.com> wrote:
> Here's an example of doing what David decribed (at least, as I understood it
> ;-) ):
>
> // In Boot.scala
> // Build SiteMap
> val entries = ... ::
> Menu(DynMenuLoc("Dynamic Menu", Link(List("dynamic"), true,
> "/dynamic"), "Dynamic Menu")) ::
> ...
>
> case class DynMenuLoc (
> override val name: String,
> override val link: Link[Unit],
> override val text: LinkText[Unit],
> _params: LocParam[Unit]*
> ) extends Loc[Unit] {
> override val params = _params.toList
> override val defaultValue = Full(())
>
> override def supplimentalKidMenuItems = {
> DynMenuItem.findAll.map(dmi => {
> MenuItem(Text(dmi.label.is), Text(dmi.link.is), Nil, false,
> false, Nil)
> }) ::: super.supplimentalKidMenuItems
> }
>
> }
>
> object DynMenuItem extends DynMenuItem with LongKeyedMetaMapper[DynMenuItem]
> with CRUDify[Long, DynMenuItem]
>
> class DynMenuItem extends LongKeyedMapper[DynMenuItem] with IdPK {
> def getSingleton = DynMenuItem
>
> object label extends MappedString(this, 32)
> object link extends MappedString(this, 255)
>
> }
>
> I can post the full example code on github if it'd help, also.
>
> -Ross
>
> On Nov 20, 2009, at 10:37 PM, philip wrote:
>
>
>
> > Hi David,
>
> > Really looking forward to this - I spent a day on this with absolute
> > failure.
>
> > Philip
>
> > On 11月20日, 上午1時56分, David Pollak <feeder.of.the.be...@gmail.com>
> > wrote:
> >> Philip & list,
>
> >> I've had it on my to-do list to write up an example... and haven't...
> >> but...
>
> >> In your Loc, you can override def supplimentalKidMenuItems and dynamically
> >> generate kid menu items.
>
> >> I'll try to get to an example.... but not today... sorry :-(
>
> >> Thanks,
>
> >> David
>
> >> On Thu, Nov 19, 2009 at 12:35 AM, philip <philip14...@gmail.com> wrote:
>
> >>> Hi David,
>
> >>> Since I am programming a CMS for my client, I need my lift menu to
> >>> come from the database.
>
> >>> LiftRules.setSiteMap(SiteMap(MenuInfo.menu :_*))
>
> >>> def menu: List[Menu] =
> >>> {
> >>> Log.info("Menu called")
> >>> ...
>
> >>> It seems my menu function only gets called once, on subsquent calls I
> >>> do not get any log message.
>
> >>> Maybe I have to subclass SiteMap?
>
> >>> Can you point me in the right direction?
>
> >>> Thanks, Philip
>
> >>> On 10月21日, 下午11時20分, David Pollak <feeder.of.the.be...@gmail.com>
> >>> wrote:
> >>>> I owe the list example code to do this... maybe tomorrow.
>
> >>>> On Wed, Oct 21, 2009 at 6:26 AM, philip <philip14...@gmail.com> wrote:
>
> >>>>> Hi,
>
> >>>>> How can I get a Liftweb menu to be generated from database content?
>
> >>>>> Alternatively, can the menu come from a XML datasource? could I load/
> >>>>> serialize from that?
> >>>>> Could it change dynamically at any time?
>
> >>>>> Thanks, Philip
>
> >>>> --
> >>>> Lift, the simply functional web frameworkhttp://liftweb.net
> >>>> Beginning Scalahttp://www.apress.com/book/view/1430219890
> >>>> Follow me:http://twitter.com/dpp
> >>>> Surf the harmonics
>
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> >> --
> >> Lift, the simply functional web frameworkhttp://liftweb.net
> >> Beginning Scalahttp://www.apress.com/book/view/1430219890
> >> Follow me:http://twitter.com/dpp
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