Use of ParameterFilter no longer forces `request.filtered_parameters' class to be Hash

[leonelgalan]

Tests

cd actionpack
bundle exec rake
bundle exec ruby -I"lib:test" test/dispatch/request_test.rb

Summary

• Fixes issue described on Use of ParameterFilter changes request.filtered_parameters class to Hash #27944 - Use of ParameterFilter changes request.filtered_parameters class to Hash
• filtered_query_string used an Array representation of what semantically is a key value pair: better suited for a Hash. Without this change filtered_params = original_params.class.new returns an Array with unintended consequences.

[rails-bot]

Thanks for the pull request, and welcome! The Rails team is excited to review your changes, and you should hear from @eileencodes (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

This repository is being automatically checked for code quality issues using Code Climate. You can see results for this analysis in the PR status below. Newly introduced issues should be fixed before a Pull Request is considered ready to review.

Please see the contribution instructions for more information.

[leonelgalan]

Hi @eileencodes, I'm following the guide's advice and giving you a nudge. Let me know if there is anything I can do to help the review/merge process move along.