> S.attr("columns") = Full("2")
>
> When a Snippet is invoked, the attributes of the <lift:...> tag are made
> available in S.attr()
>
Two major questions of mine are finally solved :-). I'm off to make widgets!
On Thu, Sep 4, 2008 at 6:53 PM, David Pollak <[EMAIL PROTECTED]> wrote:
> S.attr("columns") = Full("2")
>
> When a Snippet is invoked, the attributes of the <lift:...> tag are made
> available in S.attr()
>
> Daniel Green wrote:
>
> Because Elem is a subclass of NodeSeq, NodeSeq => NodeSeq and Elem =>
> NodeSeq mean the same thing.
>
>
>
> This is at the heart of my misunderstanding. I had wrongfully assumed
> that the function was being passed a sequence of the children, which
> seemed strange to me so I asked. I was looking for the baz attribute.
>
> However, I try to do this as a snippet and the method does not pickup
> the columns attribute:
>
> <lift:PanelGrid.grid columns="2">
> <label>foo</label><input/>
> <label>bar</label><input/>
> <label>qux</label><input/>
> <label>quux</label><input/>
> </lift:PanelGrid.grid>
>
> class PanelGrid {
> def grid(node: NodeSeq) = {
> val columns = (node \ "@columns").toString.toInt
> val children = node.toList
>
> require(children.length % columns == 0)
>
> def buildRows(ns: NodeSeq, i: Int): NodeSeq = i match {
> case i if !children.isDefinedAt(i) => ns
> case i =>
> val lastId = i + columns
> buildRows(ns ++ <tr> {children.slice(i, lastId).map(
> x => <td>{x}</td>)}</tr>, lastId + 1)
> }
>
> <table>{buildRows(Nil, 0)}</table>
> }
> }
>
> java.lang.NumberFormatException: For input string: ""
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
> at java.lang.Integer.parseInt(Integer.java:468)
> at java.lang.Integer.parseInt(Integer.java:497)
> at scala.runtime.RichString.toInt(RichString.scala:213)
> at com.cianaidan.aws.web.snippet.PanelGrid.grid(PanelGrid.scala:8)
>
>
>
>
>
>
>
> On Thu, Sep 4, 2008 at 9:58 AM, David Pollak
> <[EMAIL PROTECTED]> wrote:
>
>
> On Thu, Sep 4, 2008 at 6:43 AM, Daniel Green <[EMAIL PROTECTED]> wrote:
>
>
> Well, not exactly. I'm looking for this but on the top level. Instead
> of getting <input ..> getting the attributes of its parent.
>
> so if there's <foo attribute1="blah"/> I want access to attribute1,
> while binding. Right now you can pass a (NodeSeq)=>NodeSeq, I guess
> what I desire is a (Elem)=>NodeSeq. More useful would to be able to
> have this support with snippet lookup. For example
>
>
> Because Elem is a subclass of NodeSeq, NodeSeq => NodeSeq and Elem =>
> NodeSeq mean the same thing.
>
> As I pointed out before, you can access 'attribute1' on <foo
> attribute1="blah"/> with <foo attribute1="blah"/> \ "@attribute1"
>
> So, let's try again, please put together an entire example of what you want
> to do. What does the code that invokes the Snippet look like. For example:
>
> <lift:Foo.bar baz="slog">
> Hello <snip:hello/><br/>
> Goodbye <snip:bye foo="3/><br/>
> </lift:Foo.bar>
>
> The NodeSeq that's passed to your snippet is:
> Hello <snip:hello/><br/>
> Goodbye <snip:bye foo="3/><br/>
> In a bind call, you'd do something like:
> bind("snip", xhtml, "hello" -> ..., "bye" -> ...)
>
> So, what attribute are you looking to get? the "foo" attribute on <snip:bye
> /> or the "baz" attribute on the <lift:Foo.bar /> tag? Or some other
> attribute?
>
>
>
>
>
>
> You may be familiar with JSF's PanelGrid. Basically, you specify the
> number of columns you want and it creates a table of rows based on the
> number of tags within the tag. I took a stab at this in lift:
>
> class Custom {
> def panelGrid(node: Elem) = {
> val columns = (node \ "@columns").toString.toInt
> val children = node.child.toList
>
> require(children.length % columns == 0)
>
> def buildRows(ns: NodeSeq, i: Int): NodeSeq = i match {
> case i if !children.isDefinedAt(i) => ns
> case i =>
> val lastId = i + columns
> buildRows(ns ++ <tr> {children.slice(i, lastId).map(
> x => <td>{x}</td>)}</tr>, lastId + 1)
> }
>
> <table>{buildRows(Nil, 0)}</table>
> }
> }
>
> I would like to be able to reference Custom.panelGrid like a snippet
> without having to add an extra parent tag to collect the attributes.
>
> On Thu, Sep 4, 2008 at 7:18 AM, Daniel Green <[EMAIL PROTECTED]> wrote:
>
>
> I was more or less trying to describe the issue outlined here:
>
> http://groups.google.com/group/liftweb/browse_thread/thread/1a601c402deebecf
>
> I'll follow up in that thread.
>
>
> On Tue, Sep 2, 2008 at 1:05 PM, David Pollak
> <[EMAIL PROTECTED]> wrote:
>
>
> Please provide a complete example including how you're invoking the
> Snippet,
> the body that's passed to the snippet and the specific attribute you're
> looking for.
>
> On Tue, Sep 2, 2008 at 10:03 AM, Daniel Green <[EMAIL PROTECTED]>
> wrote:
>
>
> <foo:bar size="3"/> \ "@size"
>
>
>
> Understood. However, I was wondering about how I could get a hold of
> the size attribute when binding.
>
> On Tue, Sep 2, 2008 at 12:58 PM, David Pollak <[EMAIL PROTECTED]> wrote:
>
>
> <foo:bar size="3"/> \ "@size"
>
> Daniel Green wrote:
>
>
> When binding names to NodeSeq, is there a way to get a hold of the
> attributes of the node being rendered?
>
> For example, say I have
>
> <foo:bar size="3"/>
>
> how would I retrieve the size of bar?
>
> bind("foo", <foo:bar size="3"/>, "bar" -> ....)
>
> I know you can get a NodeSeq of its children if you provide a
> (NodeSeq) => NodeSeq, but that seems to only contain its children.
> How
> would I get a hold of the parent? This would be useful in widget
> making/use.
>
>
>
>
>
>
>
> --
> 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
>
>
>
>
>
> --
> 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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