Lift Framework BindHelpers.attr Question (or better practice?)

Question

Lift Framework BindHelpers.attr Question (or better practice?)

My problem is extracting xhtml attributes to generate absolute links, since they need to be different on testing and production environment. I would like to use a "global snippet" that binds all "src" and "href" attributes to "localhost:8080" or "www.mydomain.com" depending on a conf value.

This is how the template looks like:

<lift:Global>
  <html><body><a G:href="/somelink">some text</a></body></html>
</lift:Global>

And this is the Global.render method:

bind("G",template,
  AttrBindParam("href",Conf.localhost
    +BindHelpers.attr("G","href").map(_.toString).getOrElse("none") ,"href")
)

But in the rendered page all I see is ... href="confValueNone".

What am I doing wrong? Is there a better way to configure for different environments?

1

xml xhtml scala bind lift

задан Jasper 27 August 2010 в 09:48

1 ответ

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xml xhtml scala bind lift

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score 2 · Accepted Answer

Теперь я использую AttributeSnippets. Они немного тяжелее на стороне шаблона, но в результате получаются более чистые фрагменты.

фрагмент:

import xml.{UnprefixedAttribute, MetaData}

...

def src(in:MetaData):MetaData = {
  new UnprefixedAttribute("src",Conf.localhost+in.value.toString,scala.xml.Null)
}

def href(in:MetaData):MetaData = {
  val out = new UnprefixedAttribute("href",Conf.localhost+in.value.toString,scala.xml.Null)
  out
}

шаблон:

...
<script type="text/javascript" lift:Global.src="/inc/showdown.js" />
<link rel="stylesheet" type="text/css" lift:Global.href="/inc/style.css" />
...