Class: ActionDispatch::DebugExceptions

Inherits:
Object
  • Object
show all
Defined in:
actionpack/lib/action_dispatch/middleware/debug_exceptions.rb

Overview

This middleware is responsible for logging exceptions and showing a debugging page in case the request is local.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors) ⇒ DebugExceptions

Returns a new instance of DebugExceptions.



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# File 'actionpack/lib/action_dispatch/middleware/debug_exceptions.rb', line 19

def initialize(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors)
  @app             = app
  @routes_app      = routes_app
  @response_format = response_format
  @interceptors    = interceptors
end

Class Method Details

.register_interceptor(object = nil, &block) ⇒ Object 



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# File 'actionpack/lib/action_dispatch/middleware/debug_exceptions.rb', line 14

def self.register_interceptor(object = nil, &block)
  interceptor = object || block
  interceptors << interceptor
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'actionpack/lib/action_dispatch/middleware/debug_exceptions.rb', line 26

def call(env)
  _, headers, body = response = @app.call(env)

  if headers["X-Cascade"] == "pass"
    body.close if body.respond_to?(:close)
    raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
  end

  response
rescue Exception => exception
  request = ActionDispatch::Request.new env
  backtrace_cleaner = request.get_header("action_dispatch.backtrace_cleaner")
  wrapper = ExceptionWrapper.new(backtrace_cleaner, exception)

  invoke_interceptors(request, exception, wrapper)
  raise exception unless request.show_exceptions?
  render_exception(request, exception, wrapper)
end