Rails 3: ActionMailer

Question

我在这里关注通过我的rails应用程序发送邮件的this Railscast。

起初，我尝试设置一个邮件拦截器，就像本教程中那样，但我已经放弃了，因为我总是得到一个可爱的can't convert nil into Hash (TypeError)。

现在我省略了拦截器，我想实际发送一封邮件，但是猜猜发生了什么--我的老朋友回来了：

can't convert nil into Hash (TypeError)

app/mailers/user_mailer.rb:20:in `registration'

下面是mailer类(第20行是调用mail的那行)：

class UserMailer < ActionMailer::Base

  def registration( user )
    @invited = user

    subject = 'Welcome!'

    if Rails.env.development?
      to = 'my.private@email.com'
      subject = "to #{@invited.email}: #{subject}"
    else
      to = @invited.email   
    end

    logger.info "Sending email to #{to} with subject #{subject}"

    mail( :from => 'noreply@mysite.com', :to => to, :subject => subject )
  end
end

日志显示：

invite entered for user foo@bar.com
Sending email to foo@bar.com
Sending email to my.private@email.com with subject to foo@bar.com: Welcome!

下面是请求的视图文件(registration.text.erb)：

Welcome!

blablah blah click the following link to activate blah blah <%= activate_user_path( @invited )%> blah blah.
blah blah this is actually german (but plaintext) encoded in utf-8. 

Viel Vergnügen北京Verwenden des系统！

thx寻求任何帮助

Answer 1

这样做了，我在actionmailer的配置中有一个错误