Action Mailer around_action 回调

Question

I have this,

class SiteMailer < ApplicationMailer
around_action :set_sales

 def notify_customer(site)
   @site = site
 end

private

 def set_sales
   @sales ||= @site.customer.sales
 end
end

Is it possible to set the values for @sales as shown above? I tried but couldn't succeed. Can anyone help me or make this clear. Searched over previous questions on this topic and found people using around_action for exception handling only. Can't we use around_action like this?

Answer 1

try on mailer folder:

yourfilename.html.erb

<p> lorem ipsum <%= @site %>!</p>
<p> lorem ipsum <%= @sales %>!</p>

On model site.rb

class Site < ApplicationRecord
.............
protected
  after_commit :set_sales, on: [:update #your action]
  def set_sales
    site = self.site
    sales = site.customer.sales
    SiteMailer.notify_customer(site, sales).deliver_now
  end
end

..............................

class SiteMailer < ApplicationMailer
  def notify_customer(site, sales)
    @site = site
    @sales = sales
  end
end