Hi,
I'm reading the lift book about forms, and in reference to this code:
def add (xhtml : NodeSeq) : NodeSeq = {
var desc = ""
var amount = "0"
def processEntryAdd () { ... }
bind("entry", xhtml,
"description" -> SHtml.text(desc, desc = _),
"amount" -> SHtml.text(amount, amount = _),
"submit" -> SHtml.submit("Add", processEntryAdd))
}
am coming across:
"That means that if you want to retain values between submission and
re-rendering of the form, you’ll want to
use RequestVars (Section 3.16) or a StatefulSnippet (Section 3.11.2)
instead ."
What's the purpose of RequestVars and StatefulSnippet? I thought the
values were retained anyway through POST. That is, on submit, the
functions "desc = _" and "amount = _" were executed and the so the
state was kept...
Are those functions only executed after the bind is complete? There
must be something I'm missing here.
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