---
name: "Plack::Builder::Conditionals"
section: "3pm"
platform: "linux"
package: "libplack-builder-conditionals-perl"
version: "0.05-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Plack::Builder::Conditionals"
---

# Plack::Builder::Conditionals(3pm)

Plack::Builder extension

## NAME

Plack::Builder::Conditionals - Plack::Builder extension

## SYNOPSIS

```
  use Plack::Builder;
  use Plack::Builder::Conditionals;
  # exports "match_if, addr, path, method, header, browser, any, all"
  builder {
      enable match_if addr(['192.168.0.0/24','127.0.0.1']),
          "Plack::Middleware::ReverseProxy";
      enable match_if all( path(qr!^/private!), addr( '!', [qw!127.0.0.1 ::1!] ) ),
          "Plack::Middleware::Auth::Basic", authenticator => \&authen_cb;
      enable match_if sub { my $env = shift; $env->{HTTP_X_ENABLE_FRAMEWORK} },
          "Plack::Middleware::XFramework", framework => 'Test';
      $app;
  };
  use Plack::Builder::Conditionals -prefx => 'c';
  # exports "c_match_if, c_addr, c_path, c_method, c_header, c_any, c_all"
```

## DESCRIPTION

Plack::Builder::Conditionals is..

## FUNCTIONS

- match\_if

  ```
    enable match_if addr('127.0.0.1'), "Plack::Middleware::ReverseProxy";
    enable match_if sub { $_[0]->{REMOTE_ADDR} eq '127.0.0.1' }, "Plack::Middleware::ReverseProxy";
  ```

  As like Plack::Builder's enable\_if enable middleware if given conditions return true

- addr

  ```
    addr('127.0.0.1');
    addr([qw!192.168.0.0/24 127.0.0.1 ::1!]);
    addr('!','127.0.0.1');
  ```

  return true if REMOTE\_ADDR is found in the CIDR range. If first argument is '!', return the opposite result. This function supports IPv6 addresses

- path

  ```
    path('/')
    path(qr!^/(\w+)/!)
    path('!', qr!^/private!)
  ```

  matching PATH\_INFO

- method

  ```
    method('GET')
    method(qr/^(get|head)$/i)
    method(qw(GET HEAD))
    method('!','GET')
    method('!', qr/^(post|put)$/i)
    method('!', qw(POST PUT))
  ```

- header

  ```
    header('User-Agent',qr/iphone/)
    header('If-Modified-Since') #exists check
    header('!', 'User-Agent',qr/MSIE/)
  ```

- browser

  ```
    browser(qr/\bMSIE (7|8)/)
    browser('!',qr!^Mozilla/4!);
  ```

  Shortcut for header('User-Agent')

- all

  ```
    all( method('GET'), path(qr!^/static!) )
  ```

  return true if all conditions are return true

- any

  ```
    any( path(qr!^/static!), path('/favicon.ico') )
  ```

  return true if any condition return true

## EXPORT

```
  use Plack::Builder::Conditionals -prefx => 'c';
  # exports "c_match_if, c_addr, c_path, c_method, c_header, c_any, c_all"
```

you can add selected prefix to export functions

## AUTHOR

Masahiro Nagano \<kazeburo {at} gmail.com\>

## SEE ALSO

Plack::Builder

## LICENSE

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