在heroku上实现邪恶的pdf的问题 [英] problem implementing wicked pdf on heroku

问题描述

我正在使用 本指南 在 heroku 上集成 wicked_pdf.但不知何故，它似​​乎不起作用.我从 heroku 得到了日志，它说:

I am using this guide for integrating wicked_pdf on heroku. But somehow it doesn't seem to work. I got the logs from heroku and its says this:

Processing PdfController#get_pdf to pdf (for 115.248.175.50 at 2011-02-15 23:54:44) [GET]
  Parameters: {"format"=>"pdf", "action"=>"get_pdf", "id"=>"1", "controller"=>"pdf"}
***************WICKED***************
Rendering pdf/get_pdf

RuntimeError (PDF could not be generated!
/usr/ruby1.8.7/lib/ruby/1.8/open3.rb:73:in `exec': No such file or directory - /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/bin/wkhtmltopdf-amd64       - -  (Errno::ENOENT)
    from /usr/ruby1.8.7/lib/ruby/1.8/open3.rb:73:in `popen3'
    from /usr/ruby1.8.7/lib/ruby/1.8/open3.rb:59:in `fork'
    from /usr/ruby1.8.7/lib/ruby/1.8/open3.rb:59:in `popen3'
    from /usr/ruby1.8.7/lib/ruby/1.8/open3.rb:57:in `fork'
    from /usr/ruby1.8.7/lib/ruby/1.8/open3.rb:57:in `popen3'
    from /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/vendor/plugins/wicked_pdf/lib/wicked_pdf.rb:22:in `pdf_from_string'
    from /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/vendor/plugins/wicked_pdf/lib/pdf_helper.rb:28:in `make_pdf'
    from /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/vendor/plugins/wicked_pdf/lib/pdf_helper.rb:39:in `make_and_send_pdf'
    from /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/vendor/plugins/wicked_pdf/lib/pdf_helper.rb:13:in `render'
    from /app/fa369291-829b-4b61-9efe-b2f0d0a0a42c/home/app/controllers/schedule_controller.rb:33:in `get_pdf'

请帮忙.提前致谢.

我对代码进行了一些更改并解决了此错误，但仍然卡在此处

I made some changes in my code and got through this error but still stuck here

NoMethodError(未定义的方法为空?对于#)

推荐答案

在查看您的 Edit 部分后说未定义的方法为空?对于 #<Pathname:0x2b...>

After looking at your Edit part which says "undefined method empty? for #<Pathname:0x2b...>

这意味着你在某个地方使用空?路径对象上的函数而为空?是字符串的函数，而不是路径.

This means you are somewhere using empty? function on a path Object whereas empty? is a function of a string and not path.

尝试找出您在何处使用路径对象并在该对象上使用 to_s.

try to find out where you have used a path Object and use to_s on that object.

试试看.

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