Rails：带有文本和表情符号的PDF和HTML的response_to

Question

I'm trying to create & download a html file in pdf format which has paragraph containing text along with Emoticons (Emojis). In output I'm able to get correct text but not the Emojis.

I have dashboard_controller.rb that contains the following function.

  def download_dashboard
      respond_to do |format|
        format.html
        format.pdf do
        html = render_to_string(:layout => false, :action => "download_dashboard.html.haml")
        send_data(html, :filename => "dashboard.html", :type => 'application/pdf')
      end
    end
  end

Here, download_dashboard.html.haml has the following code

%p= Hello, World!😃 

But the download file dashboard.html output I'm getting is something different like this:

The correct output should be like this:

How can I achieve the correct output?

Answer 1

在download_dashboard.html.haml包含char ='utf-8'：

%meta{:charset => "utf-8"}