如何在Rails 2.3.5中將prawnto呈現的.pdf附加到電子郵件中？

Question

我的應用程序創建它不會保存任何地方時，它是由它傳遞給URL（例如，domain.com/letter/2.pdf）渲染的.pdf文件

。

如何在出站電子郵件中將該實際pdf作爲附件。

這裏是我的郵件：

def campaign_email(contact,email) 
    subject email.subject 
    recipients contact.email 
    from  'Me <me@me.com>' 
    sent_on Date.today 

    attachment = File.read("http://localhost:3000/contact_letters/#{attachment.id}.pdf") 

    attachment "application/pdf" do |a| 
    a.body = attachment 
    a.filename = "Othersheet.pdf" 
    end 
end 

這是創建/控制器呈現PDF：

def create 
    @contact_letter = ContactLetter.new(params[:contact_letter]) 

    @contact = Contact.find_by_id(@contact_letter.contact_id) 
    @letter = Letter.find_by_id(@contact_letter.letter_id) 

    if @contact_letter.save 
     flash[:notice] = "Successfully created contact letter." 

     #redirect_to contact_path(@contact_letter.contact_id) 
     redirect_to contact_letter_path(@contact_letter, :format => 'pdf') 
    else 
     render :action => 'new' 
    end 
    end 

注：我硬編碼的本地主機：3000 /我如何可以替換與變量所以在開發它是localhost：3000和生產是否是正確的域？有沒有一種辦法，包括在此路由）

ERROR：我得到一個

Invalid argument - http://localhost:3000/contact_letters/9.pdf

Answer 1

我把它直接傳遞PDF對象到campaign_email方法，然後分配工作一個附件。

Answer 2

下面是軌道2

class ApplicationMailer < ActionMailer::Base 
# attachments 
def signup_notification(recipient, letter) 
    recipients  recipient.email_address_with_name 
    subject   "New account information" 
    from   "system@example.com" 

    attachment :content_type => "image/jpeg", 
    :body => File.read("an-image.jpg") 

    attachment "application/pdf" do |a| 
    a.body = letter 
    end 
end 
end 

在你看來

或任何你調用你的方法的例子：

ApplicationMailer.deliver_signup_notification(letter) 

Answer 3

一個簡單的解決方案就是使用net/http和open-uri獲取url內容來獲取附件換貨

attachments['free_book.pdf'] = open("http://#{request.host}/letter/#{id}.pdf") 

如：

def campaign_email(contact,email) 
    subject email.subject 
    recipients contact.email 
    attachments['free_book.pdf'] = open("http://#{request.host}/letter/#{id}.pdf") 
    from  'Me <me@me.com>' 
    sent_on Date.today 

    body  :email => email 
end 

，或者致電PDF生成你的郵件控制器的動作裏面