Question

在模板中处理有条件内容的首选取道是什么?

作为一个具体例子,请允许我想象一下“向我的福武特人”型纽顿的共同构造。如果你们不喜欢的话,就有一个纽子去点添加。如果你已经赞成,就会有一个州去除。与此类似:

<div class="lift:MySnippet">

  <!-- other stuff -->

  <div class="favorite">
    <form id="doFavorite" class="lift:MySnippet.favorite?form=post">
      <input type="submit" value="Add to Favorites" />
    </form>
    <form id="doUnfavorite" class="lift:MySnippet.unfavorite?form=post">
      <input type="submit" value="Remove from favorites" />
    </form>
  </div>

  <!-- other stuff -->

</div>

我看不出尼伯(通过具有约束力的或CSS的变压器)的明显方式,即有条件地根据适当的“艰难”状态保留一种形式。

从Java/SpringMVC/JSP的背景情况来看,这将通过简单的<代码><c:choose>说明加以解决,但随着我花在试图表明这一点上的时间,我只能假定我正在经历这种彻底的倒退......

Thanks in advance, Lift gurus!

Answer 1

我没有声称是电梯,但这里有两个选择,对我来说似乎是合理的:

有一个刀子,一个“<条码> ——DoOr UndoFavorite,在这个版面,你将检查用户的有利状态,并填写一个或另一个(if(favorited){...} 否则。

<>>>

保存您的刀切,并在每张刀子的代号内,作为<代码>Nil的标签,如果该编码不能生效,则作为您的约束力。

Answer 2

我认为,上述取消邮寄名单的这个员额表明有条件的html:

确保点击“引用案文”以了解相关答复,这里是引文,即:

>On Oct 18, 10:05 pm, "Jason Anderson" < jla...@gmail.com> wrote:
> Ah, that makes sense
>
> perhaps the simple/*.html pages in the lift example should be
> changed to use this style of rendering rather than embedding the 
> templates in the snippet?
>
> it would also give you a chance to implement/test out that attribute
> binding for links you mentioned in another reply
>
> On 10/18/07, David Pollak < d...@athena.com> wrote:
>
>
>
> > Jason,
>
> > <lift:snippet type="...">
> > <cond:true>
> > <table> 
> > <tr><td><f:name/></td></tr>
> > </table>
> > </cond:true>
>
> > <cond:false>
> > Hey, there are no users... sorry
> > </cond:false>
> > </lift:snippet>
>
> > You can represent both cases (or even multiple cases) in the XHTML
> > and let the snippet decide which subsection of the XHTML to use. 
> > Given Scala s amazing XML handling capaibilities, it s a single line
> > of Scala code to select the code block:
>
> > val trueBlock = (xhtml  "true").filter(_.prefix == "cond").headOr 
> > (<span>Template not defined</span>)
>
> > It does make the template look a little ugly, but no worse than an
> > ERB or JSP block looks.
>
> > Also, the <cond:.../> is a convention I ve been using, but you can 
> > use any tags (e.g., <users:some> & <users:none>)
>
> > Thanks,
>
> > David*

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