I think this new version will be slower than your original one, as each call to
bind will visit the entire input XHTML. Why not use your original formulation
but instead of TheBindParam, use FuncBindParam (which is the sugar-free version
of body => ... that David describes)?
-Ross
On Feb 4, 2010, at 10:28 AM, Tim Maxwell wrote:
> Hi David,
>
> There really are a lot of paths available with scala/lift, aren't
> there?
>
> After looking at what you wrote, here's what I came up with that works
> well/is functional and compact, in case anyone else is wondering about
> it.
>
> def links(html:NodeSeq): NodeSeq={
>
> Product.findActive.foldLeft(html) {
> (html, prod) => bind("links",html,
> "force_"+prod.product ->{x:NodeSeq => {<a href={"/forced?
> product="+prod.product}>{x}</a>}}
> )
> }
> }
>
> Product is a JPA entity class, findactive returns a list of products.
>
> If anyone has suggestions, please share.
>
> Cheers,
> Tim
>
> On Feb 3, 5:08 pm, David Pollak <[email protected]> wrote:
>> On Wed, Feb 3, 2010 at 12:44 PM, Tim Maxwell <[email protected]> wrote:
>>> Hi folks,
>>
>>> I am trying to do binds based on a list of products. The point is to
>>> create links that can be wrapped around existing text or images.
>>> Something like this:
>>
>>> <signup:links.force_PROD>This is the link text our marketing dept.
>>> creates</signup:link>
>>
>>> Here's what I have so far in the snippet related to it:
>>
>>> def links(html:NodeSeq): NodeSeq={
>>
>>> val productBinds:Seq[BindParam] = Product.findActive.flatMap{
>>> prod => List[BindParam] ( TheBindParam( "force_"+prod.product,
>>> SHtml.link("/forced?product="+prod.product, ()=>() , _ ) ) )
>>> }
>>> bind("links" , html, productBinds: _*)
>>
>> It's so cool to see how people stuff in Lift...
>>
>> Within your function, you can get the element that's being bound with:
>>
>> BindHelpers.currentNode: Box[Elem]
>>
>> On the other hand, if you're looking to get the children of the node
>> currently being bound:
>>
>> FuncBindParam("force_"+prod.product, body => <a
>> href={"/forced?product="+Helpers.urlEncode(prod.product)}>{body}</a>)
>>
>> Hope this helps.
>>
>> Thanks,
>>
>> David
>>
>>
>>
>>
>>
>>> }
>>
>>> Cheers,
>>> Tim
>>
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