Rails的公共目录中的文件-Errno :: ENOENT（无此类文件或目录@ rb_sysopen

Question

I'm currently working on a Rails 5.2 application using the combine pdf gem. I'm trying to merge two PDF files but somehow I'm unable to load files from the public directory.

In the controller I have the following method:

def pdf_download
  pdf = CombinePDF.new
  pdf << CombinePDF.load("#{Rails.root}/public/pdfs/1.pdf") 
  pdf << CombinePDF.load("#{Rails.root}/public/pdfs/1.pdf")
  pdf.save "combined.pdf"

  send_data combined_file.to_pdf, filename: "combined.pdf", type: "application/pdf"
end

I have tried many posts on StackOverflow without success such as using Rails.root . But I still get the same error:

Errno::ENOENT (No such file or directory @ rb_sysopen - app/public/pdfs/1.pdf):

Is there any additional configuration I have to do to load files from public ? and if these PDF shouldn't be in public where should I store them?

Answer 1

This fixed it for me:

  def pdf_download
    pdf = CombinePDF.new
    pdf << CombinePDF.load(Rails.root.join("public", "pdfs/1.pdf").to_s)
    pdf << CombinePDF.load(Rails.root.join("public", "pdfs/2.pdf").to_s)
    # pdf.save "combined.pdf"

    send_data pdf.to_pdf, filename: "combined.pdf", type: "application/pdf"
  end

Answer 2

这为我解决了：

pdf << CombinePDF.load("./public/pdfs/1.pdf")