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Re: Re: CGI::Application 'No such run mode...'

by Anneq (Vicar)
on Dec 24, 2003 at 01:01 UTC ( #316765=note: print w/replies, xml ) Need Help??


in reply to Re: CGI::Application 'No such run mode...'
in thread CGI::Application 'No such run mode...'

freddo411,

Thanks for your response:

You don't say how you invoke your test program. Did you do something like:
http://you.com/foo.pl
or
http://you.com/foo.pl?rm=mode1
try out the later, along with rm=mode2 , etc.

In get_common_stuff(), two links are defined and called by other subroutines (modes). The user would select a link with a href like: mywebapp.pl?rm=mode'....


I also noticed that in your simplePage sub you are writing the header. This is incorrect, CGI::App takes care of this.

Actually, this sample code shows three different ways to make use of combinations of CGI::Application, CGI.pm and CGI::Template. Its quite a handy reference for me, but as you say, it doesn't appear to be using CGI::Application as it was intended.

Regards,

Anne

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[Corion]: Aaah - you should be able to do this with overload, but I would hit somebody really hard if they constructed objects that are true but the empty string, and you not knowing about the domain knowledge where this makes sense
[Eily]: you could tie a variable into not having the same value each time, if you like to make people who try to debug your code facepalm
[Corion]: perl -wle 'package o; use overload q("") => sub {warn "str"; ""}, bool => sub{warn "bool"; 1}; package main; my $o={}; bless $o => o; print "Yay" if ($o && !length($o))'
[Corion]: But people writing such code should document the objects they construct and why it makes sense for an object to be invisible as string while being true in a boolean context
[hippo]: That's equal parts clever and horrendous.
[Eily]: the overload version wouldn't return true with "$x" && !length $x though, I guess
[hippo]: The more I look at this code, the more $x is a plain old scalar and the more this condition will never be true. I'm calling it a bug at this point.
[hippo]: Thanks for your input which has soothed my sanity (a little)
[Corion]: Eily: Sure - if you force both things into stringy things, then you break that magic. But that would also mean that you changed the expression, as now $x = 0.00 will be true instead of false as it were before

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