Ruby on Rails: Customize field_error_proc to remove div.field_with_errors wrapper

field_error_proc.rb

# Save this file to your_rails_project/config/initializers/
# With this code, a form-input-error class can be applied to the input so that it can be styled by tailwindcss or CSS.
# See the original definition on
# https://github.com/rails/rails/blob/c5bf2b4736f2ddafbc477af5b9478dd7143e5466/actionview/lib/action_view/base.rb#L145
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
  if html_tag.start_with? '<input'
    html_tag.gsub(/class="[^"]+"/, 'class="form-input-error"').html_safe
  else
    html_tag
  end
end