class Sinatra::ShowExceptions

Sinatra::ShowExceptions catches all exceptions raised from the app it wraps. It shows a useful backtrace with the sourcefile and clickable context, the whole Rack environment and the request data.

Be careful when you use this on public-facing sites as it could reveal information helpful to attackers.

Public Class Methods

new(app) click to toggle source
# File lib/sinatra/showexceptions.rb, line 15
def initialize(app)
  @app      = app
  @template = ERB.new(TEMPLATE)
end

Public Instance Methods

call(env) click to toggle source
# File lib/sinatra/showexceptions.rb, line 20
def call(env)
  @app.call(env)
rescue Exception => e
  errors, env["rack.errors"] = env["rack.errors"], @@eats_errors

  if respond_to?(:prefers_plain_text?) and prefers_plain_text?(env)
    content_type = "text/plain"
    body = [dump_exception(e)]
  else
    content_type = "text/html"
    body = pretty(env, e)
  end

  env["rack.errors"] = errors

  [500,
   {"Content-Type" => content_type,
    "Content-Length" => Rack::Utils.bytesize(body.join).to_s},
   body]
end