ᕕ(ᐛ)ᕗ.rb

    models = Rails.root.join('app', 'models').to_s

    ar_regex = /
      i?where                     # where, iwhere
      | find(_by)?
      | pluck
      | select\((:|\[)            # select(:id), select([:foo, :bar])
      | reorder
      | exists\?
      | update(_attributes|_all)? # update, update_attributes, update_all
      | save
      | destroy
      | create
      | joins
      | unscoped
      | order(_by)?               # order, order_by
    /x

    ActiveRecord::Base.subclasses.each do |klass|
      klass.public_methods(false).each do |name|
        method = klass.public_method(name)
        source = method.source_location

        if source and source[0].start_with?(models) and method.source =~ ar_regex
          config.instrument_method(klass, name)
        end
      end
    end