On Mon, 26 Jun 2006, Bryn Dyment wrote:
>
> (Apache 1.x)
>
> I'm having trouble making my ErrorDocument point to a Mason-served page.
>
> For example, I can hit http://www.example.com/masonpage from the browser
> but the following:
>
> ErrorDocument 404 /masonpage
>
> ... doesn't work. Any gotchas?
I think it may be that Mason intercepts errors, packages them in
its own Exception::Class subclasses, and then prints its own
version of errors.
I played some with the built-in error verbosity but could never
make it really nice and idiot-proof so that users never see
technical messages.
I did it something like this in the top-level autohandler:
<%init>
use My::Exception; # my own Exception::Class hierarchy package
use English '-no_match_vars';
</%init>
<%perl>
eval { $m->call_next() };
if (my $M_X = Exception::Class->caught('HTML::Mason::Exception')) {
if ( $M_X->isa('HTML::Mason::Exception::Abort') ) {
$M_X->rethrow(); # important for redirects
}
else {
warn $M_X;
$m->clear_buffer();
$m->comp('/nice_error.html');
}
}
elsif (my $X = Exception::Class->caught('My::Exception')) {
warn $X, $X->trace();
$m->clear_buffer();
$m->comp('/nice_error.html', error => $X->nice_error_message );
}
elsif ($EVAL_ERROR) {
# catch untrapped programming errors
my $X = My::Exception->new(
message => 'unhandled autohandler exception',
error => $EVAL_ERROR,
);
warn $X;
$m->clear_buffer();
$m->comp('/nice_error.html');
}
</%perl>
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