Folks,
I'm made a ton of updates to sitemap.Loc. If you're using sitemap
generically, these changes will not impact you. However, there are a bunch
of new features:
- Loc is type-safe in terms of parameters... they're not just name-value
pairs
- Links and Text for a given Loc can be generated by passing in the
appropriate type-safe parameters
- Re-write rules can be part of Locs and can extract type-safe parameters
which can be accessed and used in subsequent calls
- Locs can have page-specific snippets that take as their parameter the
parameter generated by the Loc during URL re-writing
I'll illustrate with code for a page that does all the wiki stuff:
/**
* The WikiStuff object that provides menu, URL rewriting,
* and snippet support for the page that displays wiki contents
*/
object WikiStuff extends Loc[WikiLoc] {
object AllLoc extends WikiLoc("all", false)
// the name of the page
def name = "wiki"
// the default parameters (used for generating the menu listing)
def defaultParams = Full(WikiLoc("HomePage", false))
// no extra parameters
def stuff = Nil
// is the current page an "edit" or "view"
def currentEdit = foundParam.is.map(_.edit) openOr false
/**
* Check for page-specific snippets and
* do appropriate dispatching
*/
override val snippets: SnippetTest = {
case ("wiki", Full(AllLoc)) => showAll _
case ("wiki", Full(wp @ WikiLoc(_ , true))) => editRecord(wp.record) _
case ("wiki", Full(wp @ WikiLoc(_ , false)))
if !wp.record.saved_? => editRecord(wp.record) _
case ("wiki", Full(wp: WikiLoc)) => displayRecord(wp.record) _
}
/**
* Generate a link based on the current page
*/
val link =
new Loc.Link[WikiLoc](List("wiki"), false) {
override def createLink(in: WikiLoc) = {
if (in.edit)
Full(Text("/wiki/edit/"+urlEncode(in.page)))
else
Full(Text("/wiki/"+urlEncode(in.page)))
}
}
/**
* What's the text of the link?
*/
val text = new Loc.LinkText(calcLinkText _)
def calcLinkText(in: WikiLoc): NodeSeq =
if (in.edit)
Text("Wiki edit "+in.page)
else
Text("Wiki "+in.page)
/**
* Rewrite the request and emit the type-safe parameter
*/
override val rewrite: LocRewrite =
Full({
case RewriteRequest(ParsePath("wiki" :: "edit" :: page :: Nil, _,
_,_),
_, _) =>
(RewriteResponse("wiki" :: Nil), WikiLoc(page, true))
case RewriteRequest(ParsePath("wiki" :: page :: Nil, _, _,_),
_, _) =>
(RewriteResponse("wiki" :: Nil), WikiLoc(page, false))
})
Questions?
Thanks,
David
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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