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Class: ActionView::LogSubscriber

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: ActiveSupport::LogSubscriber
Defined in: actionview/lib/action_view/log_subscriber.rb

Overview

Provides functionality so that ::Rails can output logs from Action View.

Constant Summary

::ActiveSupport::LogSubscriber - Inherited

BLACK, BLUE, BOLD, CLEAR, CYAN, GREEN, MAGENTA, RED, WHITE, YELLOW

Class Attribute Summary

Class Method Summary

::ActiveSupport::LogSubscriber - Inherited

.flush_all!

Flush all log_subscribers’ logger.

.log_subscribers

::ActiveSupport::Subscriber - Inherited

.attach_to

Attach the subscriber to a namespace.

.method_added

Adds event subscribers for all new methods added to the class.

.new, .subscribers, .add_event_subscriber

Instance Attribute Summary

Instance Method Summary

Constructor Details

.newLogSubscriber

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 12

def initialize
  @root = nil
  super
end

Instance Method Details

#cache_message(payload) (private)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 77

def cache_message(payload) # :doc:
  case payload[:cache_hit]
  when :hit
    "[cache hit]"
  when :miss
    "[cache miss]"
  end
end

#from_rails_root(string) (private)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 59

def from_rails_root(string) # :doc:
  string = string.sub(rails_root, EMPTY)
  string.sub!(VIEWS_PATTERN, EMPTY)
  string
end

#logger

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 52

def logger
  ActionView::Base.logger
end

#rails_root (private)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 65

def rails_root # :doc:
  @root ||= "#{Rails.root}/"
end

#render_collection(event)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 35

def render_collection(event)
  identifier = event.payload[:identifier] || "templates"

  info do
    "  Rendered collection of #{from_rails_root(identifier)}" \
    " #{render_count(event.payload)} (#{event.duration.round(1)}ms)"
  end
end

#render_count(payload) (private)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 69

def render_count(payload) # :doc:
  if payload[:cache_hits]
    "[#{payload[:cache_hits]} / #{payload[:count]} cache hits]"
  else
    "[#{payload[:count]} times]"
  end
end

#render_partial(event)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 25

def render_partial(event)
  info do
    message = "  Rendered #{from_rails_root(event.payload[:identifier])}".dup
    message << " within #{from_rails_root(event.payload[:layout])}" if event.payload[:layout]
    message << " (#{event.duration.round(1)}ms)"
    message << " #{cache_message(event.payload)}" unless event.payload[:cache_hit].nil?
    message
  end
end

#render_template(event)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 17

def render_template(event)
  info do
    message = "  Rendered #{from_rails_root(event.payload[:identifier])}".dup
    message << " within #{from_rails_root(event.payload[:layout])}" if event.payload[:layout]
    message << " (#{event.duration.round(1)}ms)"
  end
end

#start(name, id, payload)

[ GitHub ]

  
# File 'actionview/lib/action_view/log_subscriber.rb', line 44

def start(name, id, payload)
  if name == "render_template.action_view"
    log_rendering_start(payload)
  end

  super
end