Ruby on rails mailer.rb文件语法失败

为什么这个方法会产生一个空变量，从而产生一个空体

自定义_email.text.erb

<%=@message%>

写这个

default from: "Name <name@domain.com>"
def custom_email(email, subject, message)
  @message = message
  mail to: email, subject: "Name || #{subject}"
end

默认自：“名称”
def自定义电子邮件（电子邮件、主题、消息）
@消息=消息
邮件收件人：电子邮件，主题：“姓名| |#{subject}”
结束

而不是

default from: "Name <name@domain.com>"
def custom_email(email, subject, message)
  mail to: email, subject: "Name || #{subject}"
  @message = message
end

默认自：“名称”
def自定义电子邮件（电子邮件、主题、消息）
邮件收件人：电子邮件，主题：“姓名| |#{subject}”
@消息=消息
结束

---

<>它会考虑@消息< /P>右。这很有道理哇…我累坏了。我在设置变量之前发送邮件，因此正文是空的

default from: "Name <name@domain.com>"
def custom_email(email, subject, message)
  @message = message
  mail to: email, subject: "Name || #{subject}"
end

default from: "Name <name@domain.com>"
def custom_email(email, subject, message)
  mail to: email, subject: "Name || #{subject}"
  @message = message
end