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rails--rails/actionview/lib/action_view/log_subscriber.rb
Guo Xiang Tan ee35b79d4c Prefer to pass block when logging.
The Logger by default includes a guard which checks for the
logging level. By removing the custom logging guards, we can decouple
the logging guard from the logging action to be done.

This also follows the good practice listed on http://guides.rubyonrails.org/debugging_rails_applications.html#impact-of-logs-on-performance.
2014-07-18 15:04:43 +08:00

44 lines
1 KiB
Ruby

require 'active_support/log_subscriber'
module ActionView
# = Action View Log Subscriber
#
# Provides functionality so that Rails can output logs from Action View.
class LogSubscriber < ActiveSupport::LogSubscriber
VIEWS_PATTERN = /^app\/views\//
def initialize
@root = nil
super
end
def render_template(event)
info do
message = " Rendered #{from_rails_root(event.payload[:identifier])}"
message << " within #{from_rails_root(event.payload[:layout])}" if event.payload[:layout]
message << " (#{event.duration.round(1)}ms)"
end
end
alias :render_partial :render_template
alias :render_collection :render_template
def logger
ActionView::Base.logger
end
protected
EMPTY = ''
def from_rails_root(string)
string = string.sub(rails_root, EMPTY)
string.sub!(VIEWS_PATTERN, EMPTY)
string
end
def rails_root
@root ||= "#{Rails.root}/"
end
end
end
ActionView::LogSubscriber.attach_to :action_view