1 files changed, 8 insertions, 14 deletions
diff --git a/actionpack/lib/action_controller/metal/exceptions.rb b/actionpack/lib/action_controller/metal/exceptions.rb
index 18e003741d..a65857d6ef 100644
--- a/actionpack/lib/action_controller/metal/exceptions.rb
+++ b/actionpack/lib/action_controller/metal/exceptions.rb
@@ -1,16 +1,13 @@
+# frozen_string_literal: true
+
 module ActionController
   class ActionControllerError < StandardError #:nodoc:
   end
 
   class BadRequest < ActionControllerError #:nodoc:
-    attr_reader :original_exception
-
-    def initialize(type = nil, e = nil)
-      return super() unless type && e
-
-      super("Invalid #{type} parameters: #{e.message}")
-      @original_exception = e
-      set_backtrace e.backtrace
+    def initialize(msg = nil)
+      super(msg)
+      set_backtrace $!.backtrace if $!
     end
   end
 
@@ -19,7 +16,7 @@ module ActionController
 
   class RoutingError < ActionControllerError #:nodoc:
     attr_reader :failures
-    def initialize(message, failures=[])
+    def initialize(message, failures = [])
       super(message)
       @failures = failures
     end
@@ -30,21 +27,18 @@ module ActionController
 
   class MethodNotAllowed < ActionControllerError #:nodoc:
     def initialize(*allowed_methods)
-      super("Only #{allowed_methods.to_sentence(:locale => :en)} requests are allowed.")
+      super("Only #{allowed_methods.to_sentence(locale: :en)} requests are allowed.")
     end
   end
 
   class NotImplemented < MethodNotAllowed #:nodoc:
   end
 
-  class UnknownController < ActionControllerError #:nodoc:
-  end
-
   class MissingFile < ActionControllerError #:nodoc:
   end
 
   class SessionOverflowError < ActionControllerError #:nodoc:
-    DEFAULT_MESSAGE = 'Your session data is larger than the data column in which it is to be stored. You must increase the size of your data column if you intend to store large data.'
+    DEFAULT_MESSAGE = "Your session data is larger than the data column in which it is to be stored. You must increase the size of your data column if you intend to store large data."
 
     def initialize(message = nil)
       super(message || DEFAULT_MESSAGE)