ruby-on-rails – 如何创建多部分电子邮件？ [滑轨]

发送电子邮件至delayed_job包含：

>纯文本
> html(将由不了解内联的常规客户显示)
>“内联”,由Outlook和Thunderbird(使用Lightning)识别.

>“常规”附件(#2)

到目前为止有什么用/什么不做：

我可以通过delayed_job发送包含所有部分的电子邮件,但是：

>在Apple的Mail 2附件中显示(而不是一个)：

(html显示正常)

>在Thunderbird(Lightning)中我收到邀请,就像我想要的那样.但警报没有显示出来.

>我必须在渲染的iCal上做一些非常恶心的gsubs才能让ATTENDEES显示出来. (见代码片段)

我的想法：

首先要记住的是：in order to send an email with attachments from delayed_job

To fix this,remember to add this line to your mailer: content_type “multipart/mixed”

据我所知,correct MIME-Type hierarchy因此是：

> multipart / mixed

> multipart / alternative

> text / plain
> text / html
> text / calendar(with：method = REQUEST)

>申请/ ics

警告！代码传入.

我目前以下列方式构建此电子邮件：

编辑：我更新了邮件的Rails 4.2(附件必须放在邮件之前)

在我的邮件中.rb

def invitation_email(...)  
  subject = "I suck at email..."
  attachments["invite.ics"] = { mime_type: "application/ics",content: ical_attachment }
  email = mail(from: me,to: you,subject: subject)
  add_ical_part_to(email)
  email
end

def add_ical_part_to(mail)
  outlook_body = ical_attachment
  mail.add_part(Mail::Part.new do
    content_type "text/calendar; method=REQUEST"
    body outlook_body
  end)
end

这就是我构建attach附件的方式：

def ical_attachment
  params_participant = {
        "ROLE"   => "REQ-PARTICIPANT","RSVP" => "FALSE","PARTSTAT" => "ACCEPTED"
  }

  params_invite = {
        "CUTYPE" => 'INDIVIDUAL',"ROLE"   => "REQ-PARTICIPANT","PARTSTAT" => "NEEDS-ACTION","RSVP" => "TRUE"
  }

  cal = Icalendar::Calendar.new

  event = Icalendar::Event.new
  event.dtstart      @party.from.to_datetime,{ "VALUE" => "DATE" }
  event.dtend        @party.to.to_datetime,{ "VALUE" => "DATE" }
  event.summary      @party.title
  event.description  @party.description
  event.klass        "PRIVATE"
  event.organizer    "cn=#{@user.name} #{@user.surname}:mailto:#{@user.email}"

    # THIS DOES NOT WORK
  event.alarm.trigger =  "-PT5M" # 5 Minutes before...

  @party.participations.each do |participation|
        str = "cn=#{participation.user.name} #{participation.user.surname}:mailto:#{participation.user.email}"
        event.add_attendee(str,params_participant)
  end

  @party.invitations.each do |invitee|
        event.add_attendee("mailto:#{invitee.email}",params_invite)
  end
  cal.add_event(event)
  cal.publish

  # I KNOW THIS IS HORRIBLE AND I HATE IT,BUT OTHERWISE THE ATTENDEES DO NOT SHOW UP
  cal.to_ical.gsub("ORGANIZER:","ORGANIZER;").gsub("ACCEPTED:","ACCEPTED;").gsub("TRUE:","TRUE;").gsub("PUBLISH","REQUEST")
end

任何帮助将非常感激！

正在生成的电子邮件：http://pastebin.com/patf05zd

哦,我在：

> Rails 3.2.13
> Icalendar gem I’m using