Well it depends on precisely what you want. If you want your snippet
to become empty if the product is not there, try:
productBox.map(product => {
bind("product", ns, ...)
}).openOr(NodeSeq.Empty)
If you want only certain bind positions empty, do the same thing
inside the bind:
bind("proudct", ns,
"field" -> productBox.map(p => Text(p.field.toString)).openOr
(NodeSeq.Empty),
...)
map is of course just one of the (simpler) operations you can do with
a Box, there's more complicated stuff if you need other variants.
-Ross
On Sep 8, 2009, at 3:06 PM, José María wrote:
>
> Hi.
>
> Boxes are giving me a hard time.
>
> Say you have a model of a Product.
>
> If I've a snippet that retrieves a Product from the DB:
>
> val product : Box[Product] = Product.find(2)
>
> And now I want to bind "product" with bind(), product is a Box and it
> can be empty, how can I bind something that doesn't exists? You have
> to return a NodeSeq in a snippet. What should my code must do?
>
> Best regards.
> >
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