aboutsummaryrefslogtreecommitdiffstats
path: root/actionview/lib/action_view/log_subscriber.rb
blob: 9047dbdd85b3376d5087885f2e174006ee139b36 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
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