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From Mike Williams <mi...@cortexebusiness.com.au>
Subject #set silently fails if RHS is null
Date Thu, 08 Nov 2001 03:41:53 GMT
I have a loop that looks something like this:

    #foreach( $item in $items )
    #set( $colour = $item.colour )
    #if( $colour ) {
        A $colour ${item.name}
    #end
    #end

Now say I have the following list of items:

    #1 name="hammer"
    #2 name="wheelbarrow" colour="blue"
    #3 name="wheelbarrow" colour="red"
    #4 name="screwdriver"

I expected the output to be

    A blue wheelbarrow
    A red wheelbarrow

But, in fact it's

    A blue wheelbarrow
    A red wheelbarrow
    A red screwdriver

The problem is that Velocity skips the #set if the RHS is null (well, this
is what the logs tell me).  This seems to be pretty counter-intuitive
behaviour ... is there a reason for it?  What's the best work-around?

-- 
cheers, Mike


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