I'm using Rails to generate a PDF with the executable wkhtmltopdf and then using send_data to send the result back to the user as a PDF file.
view = ActionView::Base.new(ActionController::Base.view_paths, {})
html = "<h1>A heading</h1>"
pdfdata = `echo '#{html}' | #{RAILS_ROOT}/lib/pdf/wkhtmltopdf-i386 - -`
send_data pdfdata, :filename => 'readthis.pdf', :disposition => 'attachment', :type => "application/pdf"
The PDF is generated properly, but Rails complains ArgumentError (invalid byte sequence in UTF-8)
from the send_data method. Changing it to send "foobar" as :type => text/html
makes it work, so it's definitely got a problem with pdfdata
.
I don't understand. Isn't send_data
supposed to send binary data? Of course it's not valid UTF-8. Or am I missing something?
Thanks