[Catalyst] RFC for plugin to strip script name from URI; plugin name + code review

[Matt S Trout]

On Sat, Mar 29, 2008 at 11:27:39PM -0700, Ashley wrote:
> I'm using shared hosting for several Cat deployments. This means I  
> can't do nice Location/Apache tricks or lighttpd or modperl. I am  
> running fastcgi but I have to deploy it with nothing but mod_rewrite  
> at my disposal.
> 
> Essentially this is just so that
>  - /deploy_dir/myapp.fcgi/cat/path/args
> 
> Can always look like
>  - /deploy_dir/cat/path/args
> 
> And uri_for will correctly drop the script name. It might seem silly  
> but it's important so the URI structure will not change if deployment  
> changes. I don't like having several versions of the same little hook  
> to make it work the way I want so I'm going to do a plugin. I'm asking-
> 
>  - What should this be named? Catalyst::Plugin::IhaveNoFreakingIdea...
>  - Is the following code and the .htaccess info entirely correct? It  
> will serve as the POD examples. What could be better?
> 
> I've been using this code in production for a year and a half without  
> trouble but that doesn't mean it's right (especially the mod_rewrite  
> stuff). So I *really* appreciate any help bomb-proofing it.
> 
>  # I think this config stuff can't be done this way in a plugin;
>  # have to do a merge or something that I'll have to look up.
>  use File::Spec;
>  __PACKAGE__->config->{application_executable} = (File::Spec- 
> >splitpath($0))[-1];
> 
>  sub uri_for {
>      my $self = shift;
>      my $uri = $self->NEXT::uri_for(@_);
>      my $program_name = $self->config->{application_executable};
>      $uri =~ s,/\Q$program_name\E(?=/|\z),,;
>      return ref($uri) ? $uri : URI->new($uri);
>  }
> 
> .htaccess # This one implies a / deployment.
> -----------------------
>  DirectoryIndex myapp.fcgi index.html
> 
>  RewriteEngine on
> 
>  RewriteCond %{REQUEST_FILENAME} !myapp.fcgi$
>  RewriteCond %{REQUEST_FILENAME} !-d
>  RewriteCond %{REQUEST_URI} !(.*[^/])$
>  RewriteRule ^(.*)/$ /$1 [QSA,L,R=301]
> 
>  RewriteCond %{REQUEST_FILENAME}   !-d
>  RewriteCond %{REQUEST_FILENAME}   !-f
>  RewriteRule ^(.*) /myapp.fcgi/$1 [QSA,L]

Isn't it possible in mod_rewrite to use the P flag to pass the original
URI through so it things it was at / in the first place?

-- 
      Matt S Trout       Need help with your Catalyst or DBIx::Class project?
   Technical Director                    http://www.shadowcat.co.uk/catalyst/
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