Plack::Middleware::ErrorDocument(3p)

NAME
Plack::Middleware::ErrorDocument - Set Error Document based on HTTP status code

SYNOPSIS
  # in app.psgi
  use Plack::Builder;

  builder {
      enable "Plack::Middleware::ErrorDocument",
          500 => '/uri/errors/500.html', 404 => '/uri/errors/404.html',
          subrequest => 1;
      $app;
  };

DESCRIPTION
Plack::Middleware::ErrorDocument allows you to customize error screen by setting paths (file system path or URI path) of error pages per status code.

CONFIGURATIONS

subrequest
    A boolean flag to serve error pages using a new GET sub request. Defaults to false, which means it serves error pages using file system path.

      builder {
          enable "Plack::Middleware::ErrorDocument",
              502 => '/home/www/htdocs/errors/maint.html';
          enable "Plack::Middleware::ErrorDocument",
              404 => '/static/404.html', 403 => '/static/403.html', subrequest => 1;
          $app;
      };

    This configuration serves 502 error pages from file system directly assuming that's when you probably maintain database etc. but serves 404 and 403 pages using a sub request so your application can do some logic there like logging or doing suggestions.

    When using a subrequest, the subrequest should return a regular '200' response.

AUTHOR
Tatsuhiko Miyagawa

SEE ALSO