john mahan said:
> Using Velocity Template I have tried a variety of DateTool
> (and MathTool) coding approaches without success (getting NULL result).
for everything you try? are you sure you put them in the context? what is
rendered when you do:
$math.class or $date.class ?
if that doesn't render the class names, then you haven't made those tools
available to your context. you can do so either by adding them directly:
context.put("date", new DateTool())
or if you are using the VelocityViewServlet, you can register them in your
toolbox.xml:
<tool>
<key>date</key>
<scope>application</scope>
<class>org.apache.velocity.tools.generic.DateTool</class>
</tool>
if you don't know what the above examples mean, you need to be reading the
Velocity and/or VelocityTools documentation and perhaps checking out the
examples as well.
> The objective is to calculate a Date object comprised of current
> date plus a variable number of days that is converted to a string for
display;
>
> Here is an example of one approach I tried:
>
>
> ## -------- Set Min Date
>
> #set ($minDays = 2) ## Earliest Day valid from Today (0= Today)
> ## ------ Set Initial Calendar Date For Display
> #set ($minDaysMS = ($minDays * 1000 * 60 * 60 * 24))
> #set ($currDate = $date) ## Default Current System Date
> #set ($baseDate = $date.format('S',$currDate))
> #set ($minDateMS = ($baseDate + $minDaysMS))
this won't work. you can't add a string ($baseDate) to an integer
($minDaysMS) in VTL.
> #set ($minDateDisp = $date.toDate($minDateMS))
actually, this step won't work either. the toDate() methods don't currently
take integers, only Long instances. i'm gonna change this now that i think
about it, it shouldn't hurt anything to accept integers as well.
> #set ($dateDisp = $date.format('M/d/yyyy',$minDateDisp)) ## Min Date
Short String
hope this helps.
Nathan Bubna
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