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class ActionDispatch::DebugExceptions

Action Dispatch DebugExceptions

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

Public class methods

new(app, routes_app = nil, response_format = :default, interceptors = self.class.interceptors)

Source code GitHub 
# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 23
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

register_interceptor(object = nil, &block)

Source code GitHub 
# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 18
def self.register_interceptor(object = nil, &block)
  interceptor = object || block
  interceptors << interceptor
end

Public instance methods

call(env)

Source code GitHub 
# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 30
def call(env)
  _, headers, body = response = @app.call(env)

  if headers[Constants::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 wrapper.show?(request)
  render_exception(request, exception, wrapper)
end

Definition files