I would like to have a different Catalyst error page for unexpected code errors. The default (non-debug) one only says "please come back later" in 11 European languages.

This is generated by hardcoded HTML HEREDOCs in finalize_error, which is an internal method.

Obviously the worst thing to do would be to hack into that code inside Catalyst::Engine and the best thing to do would probably be to use this: https://metacpan.org/pod/Catalyst::Plugin::CustomErrorMessage, but I'm curious. Should I have been able to hack my own finalize_error method into Catalyst?

I tried adding my own raw output code to the main .pm file for my site (the one which has use Catalyst in it) along the lines of 

print "Content-type: text/html\n\n<p>error</p>";

[download]
but the browser didn't output anything.

Then I tried adding my own hacked version of the proper internal method, along the lines of:

sub finalize_error {
    my ( $self, $c ) = @_;
 
    $c->res->content_type('text/html; charset=utf-8');
    $c->res->body( '<p>error</p>' );
    $c->res->status(500);

}

[download]

But it told me $c was undefined.

Should I have been able to do this, and if so how and where?

TIA

In reply to Over-riding Catalyst's finalize_error method by LittleJack

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