Rails ガイド

{
  key: 'posts/1-dashboard-view'
}

{
  key: 'posts/1-dashboard-view'
}

{
  key: 'posts/1-dashboard-view'
}

{
  key: 'posts/1-dashboard-view'
}

{
  path: '/users/1'
}

{
  path: '/users/1'
}

{
  controller: "PostsController",
  action: "new",
  params: { "action" => "new", "controller" => "posts" },
  headers: #<ActionDispatch::Http::Headers:0x0055a67a519b88>,
  format: :html,
  method: "GET",
  path: "/posts/new"
}

{
  controller: "PostsController",
  action: "index",
  params: {"action" => "index", "controller" => "posts"},
  headers: #<ActionDispatch::Http::Headers:0x0055a67a519b88>,
  format: :html,
  method: "GET",
  path: "/posts",
  status: 200,
  view_runtime: 46.848,
  db_runtime: 0.157
}

{
  status: 302,
  location: "http://localhost:3000/posts/new"
}

{
  filter: ":halting_filter"
}

{
  identifier: "/Users/adam/projects/notifications/app/views/posts/index.html.erb",
  layout: "layouts/application"
}

{
  identifier: "/Users/adam/projects/notifications/app/views/posts/_form.html.erb"
}

{
  identifier: "/Users/adam/projects/notifications/app/views/posts/_post.html.erb",
  count: 3,
  cache_hits: 0
}

{
  sql: "SELECT \"posts\".* FROM \"posts\" ",
  name: "Post Load",
  connection_id: 70307250813140,
  binds: []
}

{
  record_count: 1,
  class_name: "User"
}

{
  mailer: "Notification",
  message_id: "4f5b5491f1774_181b23fc3d4434d38138e5@mba.local.mail",
  subject: "Rails Guides",
  to: ["users@rails.com", "dhh@rails.com"],
  from: ["me@rails.com"],
  date: Sat, 10 Mar 2012 14:18:09 +0100,
  mail: "..." #（長いので省略）
}

{
  mailer: "Notification",
  message_id: "4f5b5491f1774_181b23fc3d4434d38138e5@mba.local.mail",
  subject: "Rails Guides",
  to: ["users@rails.com", "dhh@rails.com"],
  from: ["me@rails.com"],
  date: Sat, 10 Mar 2012 14:18:09 +0100,
  mail: "..." #（長いので省略）
}

{
  mailer: "Notification",
  action: "welcome_email",
  args: []
}

{
  key: 'name-of-complicated-computation'
}

{
  key: 'name-of-complicated-computation'
}

{
  key: 'name-of-complicated-computation'
}

{
  key: 'name-of-complicated-computation'
}

{
  key: 'name-of-complicated-computation'
}

ActiveSupport::Notifications.subscribe "process_action.action_controller" do |name, started, finished, unique_id, data|
  # 自分のコードをここに書く
  Rails.logger.info "#{name} Received!"
end

ActiveSupport::Notifications.subscribe "process_action.action_controller" do |*args|
  event = ActiveSupport::Notifications::Event.new *args

  event.name      # => "process_action.action_controller"
  event.duration  # => 10 (in milliseconds)
  event.payload   # => {:extra=>information}

  Rails.logger.info "#{event} Received!"
end

ActiveSupport::Notifications.subscribe "process_action.action_controller" do |*args|
  data = args.extract_options!
  data # { extra: :information }
end

ActiveSupport::Notifications.subscribe /action_controller/ do |*args|
  # ActionControllerの全イベントをチェック
end

ActiveSupport::Notifications.instrument "my.custom.event", this: :data do
  # 自分のコードをここに書く
end

ActiveSupport::Notifications.subscribe "my.custom.event" do |name, started, finished, unique_id, data|
  puts data.inspect # {:this=>:data}
end