Greetings all,
I need some help with a simple problem that I'm struggling to solve.
I'm writing a simple expense tracking application. To keep it simple,
I have a months and expenses. I can have a number of months, and each
month can have more than one expense:
class Month extends LongKeyedMapper[Month] with IdPK {
...
def expensesformonth = Expense.findAll( By(Expense.month,this.id) )
}
I have HTML to print out expenses for a given month (i.e. URL = .../
month/12):
<lift:MonthPage.summary>
...
<thismonth:expenseitem>
<tr>
<td><month:item /></td>
<td align="right"><month:amount /></td>
</tr>
</thismonth:expenseitem>
...
</lift:MonthPage.summary>
The area I'm having problems with is the code to drive the above
HTML. I need something like:
class MonthPage {
def summary( xhtml : NodeSeq ) : NodeSeq = S.param("month") match {
case Full(m) => {
val allexpenses : NodeSeq = expensesformonth.flatmap({ month =>
bind("month", chooseTemplate("thismonth", "expenseitem",
xhtml),
"name" -> Text( month.item ),
"amount" -> Text( month.amount )
)
})
bind("thismonth", xhtml, "expenseitem" -> allexpenses)
}
case _ => {
Text( "Not a valid month." )
}
}
}
I've tried using different expressions in place of "expensesformonth"
above, but they either don't compile or don't work.
Please can someone point me in the right direction. I have been
working through the Lift PDF book, but haven't come across this sort
of thing in there.
Thanks,
Paul.
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