rails redirect_to :back not working
Rails 5 has redirect_back, instead of redirect_to :back. It was changed as it used to raise an exception when request's HTTP_REFERER was not present.
So use this:
redirect_back fallback_location: root_pathYou can change root_path to something else as per your requirements.
redirect_to :back was deprecated in Rails 5.0 (see PR) and then removed in Rails 5.1
Use the following instead:
redirect_back(fallback_location: root_path)