Class: Sinatra::ShowExceptions

Inherits:
Rack::ShowExceptions
  • Object
show all
Defined in:
lib/sinatra/show_exceptions.rb

Overview

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.

Constant Summary

@@eats_errors =
Object.new

Class Method Summary (collapse)

Instance Method Summary (collapse)

Constructor Details

- (ShowExceptions) initialize(app)

Returns a new instance of ShowExceptions



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# File 'lib/sinatra/show_exceptions.rb', line 15

def initialize(app)
  @app      = app
  @template = ERB.new(TEMPLATE)
end

Class Method Details

+ (Object) flush



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# File 'lib/sinatra/show_exceptions.rb', line 12

def @@eats_errors.flush(*) end

+ (Object) puts



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# File 'lib/sinatra/show_exceptions.rb', line 13

def @@eats_errors.puts(*) end

Instance Method Details

- (Object) call(env)



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# File 'lib/sinatra/show_exceptions.rb', line 20

def call(env)
  @app.call(env)
rescue Exception => e
  errors, env["rack.errors"] = env["rack.errors"], @@eats_errors

  if 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