Better Errors replaces the standard Rails error page with a much better and more useful error page. It is also usable outside of Rails.

• Full stack trace
• Source code inspection for all stack frames (with highlighting)
• Local and instance variable inspection

Add this line to your application's Gemfile (under the development group):

gem 'better_errors'

And then execute:

$ bundle

Or install it yourself as:

$ gem install better_errors

If you're using Rails, there's nothing else you need to do.

If you're not using Rails, you need to insert BetterErrors::Middleware into your middleware stack, and optionally set BetterErrors.application_root if you'd like Better Errors to abbreviate filenames within your application.

Here's an example using Sinatra:

require "sinatra"
require "better_errors"

use BetterErrors::Middleware
BetterErrors.application_root = File.expand_path("..", __FILE__)

get "/" do
  raise "oops"
end

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request