Rails 3 ActionMailer和Wicked_PDF [英] Rails 3 ActionMailer and Wicked_PDF
问题描述
我正在尝试使用ActionMailer和wicked_pdf生成带有渲染的PDF附件的电子邮件。
I'm trying to generate emails with rendered PDF attachements using ActionMailer and wicked_pdf.
在我的网站上，我已经分别使用了wicked_pdf和actionmailer。我可以使用wicked_pdf在Web应用程序中提供pdf，并且可以使用ActionMailer发送邮件，但是我无法将呈现的pdf内容附加到ActionMailer（已编辑内容）：
On my site, I'm using already both wicked_pdf and actionmailer separately. I can use wicked_pdf to serve up a pdf in the web app, and can use ActionMailer to send mail, but I'm having trouble attaching rendered pdf content to an ActionMailer (edited for content):
class UserMailer < ActionMailer::Base
default :from => "webadmin@mydomain.com"
def generate_pdf(invoice)
render :pdf => "test.pdf",
:template => 'invoices/show.pdf.erb',
:layout => 'pdf.html'
end
def email_invoice(invoice)
@invoice = invoice
attachments["invoice.pdf"] = {:mime_type => 'application/pdf',
:encoding => 'Base64',
:content => generate_pdf(@invoice)}
mail :subject => "Your Invoice", :to => invoice.customer.email
end
end
使用Railscasts 206（动作邮件程序（在Rails 3中）作为指南，只有当我不尝试添加呈现的附件时，我才能发送具有所需丰富内容的电子邮件。
Using Railscasts 206 (Action Mailer in Rails 3) as a guide, I can send email with my desired rich content, only if I don't try to add my rendered attachment.
如果我尝试添加添加附件（如上所示），我得到的附件看起来是正确的大小，只是附件的名称没有按预期出现，也无法以pdf格式读取。除此之外，我的电子邮件内容丢失了。
If I try to add the attachment (as shown above), I get an attachement of what looks to be the right size, only the name of the attachment doesn't come across as expected, nor is it readable as a pdf. In addition to that, the content of my email is missing...
在Rails 3.0中动态渲染PDF时，有人对使用ActionMailer有任何经验吗？
Does anyone have any experience using ActionMailer while rendering the PDF on the fly in Rails 3.0?
谢谢！
--Dan
Thanks in advance! --Dan
推荐答案
WickedPDF可以很好地呈现到文件中，以便附加到电子邮件或保存到文件系统
WickedPDF can render to a file just fine to attach to an email or save to the filesystem.
您上面的方法对您不起作用，因为 generate_pdf 是邮件程序上的方法，它返回一个邮件对象（不是您想要的PDF）
Your method above won't work for you because generate_pdf is a method on the mailer, that returns a mail object (not the PDF you wanted)
此外，如果您尝试在方法本身中调用render，则ActionMailer中存在一个错误，该错误会导致消息格式错误
Also, there is a bug in ActionMailer that causes the message to be malformed if you try to call render in the method itself
http://chopmode.wordpress.com/2011/03/25/render_to_string-causes-subsequent-mail-rendering-to-fail/
有2种方法可以完成这项工作，
There are 2 ways you can make this work,
第一种方法是使用上面第一篇文章中所述的技巧：
The first is to use the hack described in the first article above:
def email_invoice(invoice)
@invoice = invoice
attachments["invoice.pdf"] = WickedPdf.new.pdf_from_string(
render_to_string(:pdf => "invoice",:template => 'documents/show.pdf.erb')
)
self.instance_variable_set(:@lookup_context, nil)
mail :subject => "Your Invoice", :to => invoice.customer.email
end
或者，您可以将附件设置为因此：
Or, you can set the attachment in a block like so:
def email_invoice(invoice)
@invoice = invoice
mail(:subject => 'Your Invoice', :to => invoice.customer.email) do |format|
format.text
format.pdf do
attachments['invoice.pdf'] = WickedPdf.new.pdf_from_string(
render_to_string(:pdf => "invoice",:template => 'documents/show.pdf.erb')
)
end
end
end
这篇关于Rails 3 ActionMailer和Wicked_PDF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
