wicked_pdf 错误:无法生成 PDF [英] wicked_pdf Error: PDF could not be generated

问题描述

Gemfile

gem "wicked_pdf"
gem "wkhtmltopdf-binary"

错误:

RuntimeError in CarsController#show

Failed to execute:
/usr/bin/wkhtmltopdf     --print-media-type    -q - - 
Error: PDF could not be generated!
Rails.root: /u/apps/zeepauto/autozeep_update

cars_controller

def show
    @class_showcar = true
    @class_admin = true
    @car = Car.find(params[:id])
    @search = Car.search(params[:search])
    @cars_see_special = Car.where(:special => "1").order('rand()').limit(3)

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @car }
      format.pdf do
        render :pdf => "#{@car.carname.name}",
               :print_media_type => true
      end
    end
  end

show.html.erb

<p class="show_links"><%= link_to  url_for(request.params.merge(:format => :pdf)) do %>
  <%= image_tag('/images/printversion.png', :alt => 'Download') %>
</p>

wicked_pdf.erb

# config/initializers/wicked_pdf.rb
WickedPdf.config = {
#  :exe_path => '/var/lib/gems/1.8/bin/wkhtmltopdf'
  :exe_path => '/usr/bin/wkhtmltopdf'
}

推荐答案

我在 gemfile 中已经有了 wkhtmltopdf-binary，但是因为它在我的本地计算机上运行并且不是在服务器上，我把这个错误留给服务器支持团队来处理..他们已经检查了 wkhtmltopdf 的路径，他们试图将一个简单的 html 转换为 pdf 并且它起作用了..所以他们试图运行一个 bundleupdate 命令，此后 pdf 转换在服务器上也能正常工作.我改变了一个宝石路径，我想这就是问题所在.我发布了我的解决方案，以防其他人也遇到这个问题.

I had wkhtmltopdf-binary already in gemfile, but as this was working on my local computer and not on server, I left this error for the server support team to care off.. they have checked the path to wkhtmltopdf, they tried to convert a simple html to pdf and it worked.. so they tried to run a bundle update command and after this the pdf converting worked fine on server too. I had a gem path changed and I guess this was the problem. I posted my solution in case someone else will have this problem too.

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