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rails--rails/actionpack/lib/action_view/helpers/benchmark_helper.rb

24 lines
749 B
Ruby

require 'benchmark'
module ActionView
module Helpers
module BenchmarkHelper
# Measures the execution time of a block in a template and reports the result to the log. Example:
#
# <% benchmark "Notes section" do %>
# <%= expensive_notes_operation %>
# <% end %>
#
# Will add something like "Notes section (0.34523)" to the log.
#
# You may give an optional logger level as the second argument
# (:debug, :info, :warn, :error). The default is :info.
def benchmark(message = "Benchmarking", level = :info)
if @logger
real = Benchmark.realtime { yield }
@logger.send level, "#{message} (#{'%.5f' % real})"
end
end
end
end
end