我可以包含一个按钮来下载电子邮件中的附件吗？

Question

I'm developing a rails application and using ActionMailer to send emails to the users. I know how to include attachments in every email. But I was wondering if I can provide a button within the mailer view to download explicitly a particular attachment as a user interface improvement.

Update:

I honestly forgot to mention something important about this. The eventual endpoint that I need to build in order to download the file from the email needs to be authenticated via Authorization header, and it's value is an encoded token using base64. I don't know if there is a vulnerability by sending this token within the email.

Answer 1

Sure. The button can link to a controller action in your rails application that sends the file down to the user just as if the user clicked to download it when browsing in your app.

Answer 2

Do this in route.rb

get "controller/action" , as: :download

in mailer view, add this

<%= link_to "DOWNLOAD", download_path %>

in your controller do something like

def download
    send_file 'path_to_your_file',:type=>"application/extension_of_your_file", :x_sendfile=>true 
end

The Other way

You can simply put your file in public folder and then just put a link to download in your mailer view like:

<%= link_to 'name of button', 'http:// your_website / your_file_name' %>

Also next time make sure to add some code to your Question about what you have tried or what you are planning to achieve your question.