NAME

       Plack::Middleware::StackTrace - Displays stack trace when your app dies

SYNOPSIS

         enable "StackTrace";

DESCRIPTION

       This middleware catches exceptions (run-time errors) happening in your application and
       displays nice stack trace screen. The stack trace is also stored in the environment as a
       plaintext and HTML under the key "plack.stacktrace.text" and "plack.stacktrace.html"
       respectively, so that middleware further up the stack can reference it.

       This middleware is enabled by default when you run plackup in the default development
       mode.

       You're recommended to use this middleware during the development and use
       Plack::Middleware::HTTPExceptions in the deployment mode as a replacement, so that all the
       exceptions thrown from your application still get caught and rendered as a 500 error
       response, rather than crashing the web server.

       Catching errors in streaming response is not supported.

CONFIGURATION

       force
             enable "StackTrace", force => 1;

           Force display the stack trace when an error occurs within your application and the
           response code from your application is 500. Defaults to off.

           The use case of this option is that when your framework catches all the exceptions in
           the main handler and returns all failures in your code as a normal 500 PSGI error
           response. In such cases, this middleware would never have a chance to display errors
           because it can't tell if it's an application error or just random "eval" in your code.
           This option enforces the middleware to display stack trace even if it's not the direct
           error thrown by the application.

       no_print_errors
             enable "StackTrace", no_print_errors => 1;

           Skips printing the text stacktrace to console ("psgi.errors"). Defaults to 0, which
           means the text version of the stack trace error is printed to the errors handle, which
           usually is a standard error.

AUTHOR

       Tokuhiro Matsuno

       Tatsuhiko Miyagawa

SEE ALSO

       Devel::StackTrace::AsHTML Plack::Middleware Plack::Middleware::HTTPExceptions