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From Doug Carter <dcar...@mercycorps.org>
Subject Re: Debugging templates that have #include or #parse
Date Mon, 02 May 2011 18:42:34 GMT

Hi Nathan,

On Fri, Apr 29, 2011 at 11:23:11AM -0700, Nathan Bubna wrote:
> On Fri, Apr 29, 2011 at 8:08 AM, Doug Carter <dcarter@mercycorps.org> wrote:
> >
> > Hi all,
> >
> > I have this problem on rare occasions, but I've never found a way
> > to resolve it...
> >
> > Say I have a template named "template.vm" that has something like:
> >
> > <html>
> > <head>
> > <title>Page Name</title>
> > </head>
> > <body>
> > #parse ( "macros.vm" )
> > #parse ( "navbar.inc" )
> >
> > #set ( $foo = "some val")
> > .
> > .
> > .
> >
> > I'll find some velocity error in the logs, like:
> >
> > Velocity [error] Error in evaluation of == expression. Both arguments
> > must be of the same Class. Currently left = class java.lang.String,
> > right = class java.lang.Long. /template.vm [line 10, column 42]
> >
> > The error is indicating line 10 in the /template.vm file, but the error
> > is actually in one of the #parsed files, so locating the error can be
> > difficult at times.
> 
> The error in the logs should have the proper template name, line and
> column.  If not, that is a bug.  What version of Velocity are you
> using?  We have had bugs like that in the past, but i thought they
> were fixed.

I'm embarrassed to say that I'm still running an older version, 1.4. I'll
be upgrading soon, so I'll do some more complete testing and see if I
can duplicate this problem before posting again.

> > Is there a way to expand the template so that it shows all of the velocity
> > code un-parsed? As I recall long ago, C had a way to show the contents of
> > a .c file that would expand macros and show the contents of include files.
> 
> No, Velocity has no support for that.

Thanks for the info.


Best,

Doug



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