How to get the name of the action in an after_action filter for ActionMailer

问题

In the class below, how do I get the current action name (i.e. email_confirmation, password_reset) in side the after_action callback add_mandril_headers?

class UserMailer < ActionMailer::Base

  after_action :add_mandril_headers

  def email_confirmation(user)
    mail(..)
  end

  def password_reset(user)
    mail(..)
  end

private

  # how to get the action name? 
  def add_mandrill_headers
    headers['X-MC-Tags'] = [mailer_name, action_name].join('_');
  end
end

回答1:

Turns out action_name returns the current mailer action name. I tried it based on the fact that ActionController has a similar method.

回答2:

Thanks @HarishShetty!

As you mentioned, the action_name is good for all Controllers, as it is inherited from ApplicationController.

For example, I was using public_activity and wanted some simplification in my controllers:

class SiteDetailsController < ApplicationController

  after_action :track_activity, only: [:create, :update, :destroy]

  # ...

  private

  def track_activity
    @site_detail.create_activity action_name, owner: current_user
  end
end

来源：https://stackoverflow.com/questions/26822926/how-to-get-the-name-of-the-action-in-an-after-action-filter-for-actionmailer