Merge pull request #17861 from kirs/pp-request-params

Pretty-print request params on exception page

actionpack/lib/action_dispatch/middleware/exception_wrapper.rb

 require 'action_controller/metal/exceptions'
 require 'active_support/core_ext/module/attribute_accessors'
+require 'pp'
 
 module ActionDispatch
   class ExceptionWrapper

actionpack/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb

@@ -10,7 +10,14 @@
   clean_params.delete("action")
   clean_params.delete("controller")
 
-  request_dump = clean_params.empty? ? 'None' : clean_params.inspect.gsub(',', ",\n")
+  request_dump = if clean_params.empty?
+    'None'
+  else
+    pretty_params = ""
+    PP.pp(clean_params, pretty_params, 200)
+
+    pretty_params
+  end
 
   def debug_hash(object)
     object.to_hash.sort_by { |k, _| k.to_s }.map { |k, v| "#{k}: #{v.inspect rescue $!.message}" }.join("\n")