caching_helper.rb

  # WARNING: fragment cache is no longer cleared on deploy to clear completely
  # use a version key or bump FRAGMENT_CACHE_VERSION above
  def fragment_cache(name, options = {}, &block)
    old_within_fragment = @within_fragment
    @within_fragment = true

    # trace execution for NewRelic
    CachingHelper.trace_execution_scoped(["Custom/Fragment cache overhead: #{name}"]) do
      if_conditions = Array.wrap(options[:if])
      unless_conditions = Array.wrap(options[:unless])

              # if name =~ /landingpage\/property/
              #   require 'pry'
              #   binding.pry
              # end

      result = nil
      authenticity_token = form_authenticity_token
      with_overriden_authenticity_token(placeholder_for('AUTHENTICITY_TOKEN', authenticity_token)) do
          if if_conditions.all? and not unless_conditions.any? and not params[:ab_test]
            cache(cache_key(name, options), :expires_in => options[:expires_in]) do
              # CachingHelper.trace_execution_scoped(["Custom/Fragment cache render (cache miss): #{name}"], &block)
              result = capture_as_erb(&block)
            end
          else
            result = capture_as_erb(&block)
            # CachingHelper.trace_execution_scoped(["Custom/Fragment cache render (cache skipped): #{name}"], &block)
          end
      end

      concat(replace_placeholders(result))
    end
  ensure
    @within_fragment = old_within_fragment
  end