[EMAIL PROTECTED] wrote:
>
> I am sorry I was not clear here. I will try to explain better. Also I am
> just starting to use Velocity and so my knowledge is still limited.
No worries....
> All
> that I was looking to do was to be able to provide the definition for what
> an argument looks like at the time a macro is invoked.
>
> #table($title, $data):
> #columns
> <TH>$row.one</TH> <TD>$row.two</TD>
> #end
> #end
>
> where table might be defined as
>
> #vmmacro(table, $title, $data, $columns)
> <TABLE>
> #foreach ($row in $data)
> <TR>
> #parse($columns)
> </TR>
> #end
> </TABLE>
> #end
>
> Obviously in such a situation you wouldn't want to bind calling the table
> macro to know the name '$row'. In a situation like that though parse would
> need to take an optional arg as the new context, like
> #parse ($columns, $row)
>
> That is not really a great idea though as you have a macro method already.
> Thinking out loud, what I am talking about its just short hand for a scoped
> macro call and this could just as easily look like:
>
> #table($title, $data)
> #vmmacro(columns, $row)
> <TH>$row.one</TH> <TD>$row.two</TD>
> #end
> #end
>
> and
>
> #vmmacro(table, $title, $data, $columns)
> <TABLE>
> #foreach ($row in $data)
> <TR>
> #columns($row)
> </TR>
> #end
> </TABLE>
> #end
>
> This IMHO allows for larger, more complex presentation widgets to be
> defined and removes the need to define things like row definitions apart
> from the tables that might use them. Hopefully I explained a bit better
> this time?
I have to admit, I still don't get it, but I think there is a bit of
cloudiness in how you percieve that VMs work. Briefly :
All VMs are 'line directives', in that they don't have a body like #if()
does.
For table generation, you could define two VMs as :
#macro( table $title $data )
Table of $title
<table>
#foreach( $row in $data )
#makerow( $row )
#end
</table>
#end
#macro( makerow $rowdata )
<tr>
#foreach( $field in $rowdata)
<td>$field</td>
#end
</tr>
#end
and then make a table as :
#table( "Foobar" $mydata )
which would call the VM table, which would call the VM makerow.
Now, starting with this as a basis, what doesn't this solve for you, or
what should be changed?
geir
--
Geir Magnusson Jr. [EMAIL PROTECTED]
Developing for the web? See http://jakarta.apache.org/velocity/
