[Catalyst] errors under mod_perl

[Andreas Marienborg]

On 23. jan. 2006, at 22.41, August R. Wohlt wrote:

> Hi All,
>
> I'm relatively new to catalyst and have an application I just  
> rolled out to a large user base. While developing, it was run as a  
> stand-alone CGI so that I could edit the code and see changes live.  
> When I rolled it out, I switched to mod_perl, and now I get crazy  
> intermittent Class:DBI /  DBIx/ContextualFetch.pm errors. The app  
> runs for a little while with no problem. Users can log in and out  
> and use it, but then suddenly the errors start popping up all over  
> the place: in the session logic, when searching objects in the  
> database, but never in the same place. Here's a sample. Hoping  
> someone knows off-hand what this is and that I'm doing something  
> simply wrong:
>
> [Mon Jan 23 13:25:02 2006] [catalyst] [error] Caught exception in  
> BioScribe::V::Mason->process "Couldn't render component "/mc/ 
> projects.mc" - error was "BioScribe::M::CDBI::Subject can't SELECT id
> FROM   Subject
> WHERE  project = ?
> : Can't use an undefined value as an ARRAY reference at  /usr/lib/ 
> perl5/site_perl/5.8.5/Class/DBI.pm line 1113.
>

This might be browser related actually, as different browsers handle  
a certain case different.

if you have a <form method="post"> without an action, and in the url  
have like /myapp/admin/user/?id=1

and in the form <input type="hidden" name="id" value="1" /> you will  
get an array of as $id, not the value 1.

Some browsers strip the ?id=1 before posting (when you dont specify  
an action in the form-tag) and others doesnt. Might be worth cheking  
into atleast.

I have the same problem when deploying things at work from time to  
time :)


andreas