# NAME

Plack::Middleware::Scope::Container - per-request container

# SYNOPSIS

   use Plack::Builder;


   builder {
       enable "Plack::Middleware::Scope::Container";
       $app
   };


   # in your application
   package MyApp;

   use Scope::Container;

   sub getdb {
       if ( my $dbh = scope_container('db') ) {
           return $dbh;
       } else {
           my $dbh = DBI->connect(...);
           scope_container('db', $dbh)
           return $dbh;
       }
   }

   sub app {
     my $env = shift;
     getdb(); # do connect
     getdb(); # from container
     getdb(); # from container
     return [ '200', [] ["OK"]];
     # disconnect from db at end of request
   }

# DESCRIPTION

Plack::Middleware::Scope::Container and [Scope::Container](http://search.cpan.org/perldoc?Scope::Container) work like mod\_perl's pnotes.
It gives a per-request container to your application.

# AUTHOR

Masahiro Nagano <kazeburo {at} gmail.com>

# SEE ALSO

[Scope::Container](http://search.cpan.org/perldoc?Scope::Container), [Plack::Middleware::Scope::Session](http://search.cpan.org/perldoc?Plack::Middleware::Scope::Session)

# LICENSE

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.

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