Question

我一直试图通过rails 5.1 app中的sidekiq和wicked_pdf生成PDF，但一直收到此错误：

2017-11-01T02:20:33.339Z 1780 TID-ovys2t32c GeneratePdfWorker JID-b3e9487113db23d65b179b1c INFO: start
2017-11-01T02:20:33.369Z 1780 TID-ovys2t32c GeneratePdfWorker JID-b3e9487113db23d65b179b1c INFO: fail: 0.03 sec
2017-11-01T02:20:33.371Z 1780 TID-ovys2t32c WARN: {"class":"GeneratePdfWorker","args":[2,1],"retry":false,"queue":"default","jid":"b3e9487113db23d65b179b1c","created_at":1509502833.334234,"enqueued_at":1509502833.3345}
2017-11-01T02:20:33.380Z 1780 TID-ovys2t32c WARN: NameError: undefined local variable or method `quote' for #<GeneratePdfWorker:0x007fb6d5cea070>
Did you mean?  @quote
2017-11-01T02:20:33.380Z 1780 TID-ovys2t32c WARN: /Users/stefanbullivant/quottes/app/workers/generate_pdf_worker.rb:18:in `perform'

即使没有在av.render方法中传递本地，我也会收到此错误。关于导致它的原因的任何想法都表示赞赏。 quotes_controller.rb调用worker

  def create_pdf
    @quote = Quote.find(params[:id])
    GeneratePdfWorker.perform_async(@quote.id, current_account.id)
    redirect_to @quote
  end

Generate_pdf_worker.rb

class GeneratePdfWorker
  include Sidekiq::Worker
  sidekiq_options retry: false

  def perform(quote_id, account_id)
    @quote = Quote.find(quote_id)
    @account = Account.find(account_id)

    # create an instance of ActionView, so we can use the render method outside of a controller
    av = ActionView::Base.new()
    av.view_paths = ActionController::Base.view_paths

    # need these in case your view constructs any links or references any helper methods.
    av.class_eval do
      include Rails.application.routes.url_helpers
      include ApplicationHelper
    end

    pdf = av.render pdf: "Quote ##{ @quote.id } for #{ @quote.customer_name }",
                   file: "#{ Rails.root }/tmp/pdfs/quote_#{@quote.id}_#{@quote.customer_name}.pdf",
               template: 'quotes/create_pdf.html.erb',
                 layout: 'layouts/quotes_pdf.html.erb',
            disposition: 'attachment',
     disable_javascript: true,
         enable_plugins: false,
                 locals: {
                          quote: @quote,
                          account: @account
                        }

    # pdf_html = av.render :template => "quotes/create_pdf.html.erb",
    # :layout => "layouts/quotes_pdf.html.erb",
    # :locals => {
    #   quote: @quote,
    #   account: @account
    # }

    # use wicked_pdf gem to create PDF from the doc HTML
    quote_pdf = WickedPdf.new.pdf_from_string(pdf, :page_size => 'A4')

    # save PDF to disk
    pdf_path = Rails.root.join('tmp', "quote.pdf")
    File.open(pdf_path, 'wb') do |file|
      file << quote_pdf
    en
  end
end

quotes_pdf.html.erb PDF布局

<!DOCTYPE html>
<html>
  <head>
    <title>Quottes</title>
    <meta charset="utf-8" />
    <meta name="ROBOTS" content="NOODP" />

    <style>
      <%= wicked_pdf_stylesheet_link_tag 'quote_pdf' -%>
    </style>
  </head>

  <body>
    <div class="container">
      <%= yield %>
    </div>
  </body>
</html>

create_pdf.html.erb PDF视图（为了让事情先运行起来，每个本地只有两行）

<%= account.brand_name %>
<%= quote.customer_name %>

非常感谢任何关于让这种运行的建议。我已经玩了简单地在pdf视图中生成普通的html文本而没有传递任何变量但仍然得到这个错误，所以我很困惑是什么导致它。

Answer 1

我有时也会忘记this - 似乎非常坚持第18行（我只能假设是渲染）正在查找本地的引用但无法找到它，当时定义了@quote。如果那是你的所有代码，那么我会假设没有接受更改。

我最好的建议（我希望有效）是你需要重启sidekiq！

使用Sidekiq＆amp;生成PDF邪恶的PDF：未定义的局部变量或工人的方法＃

1 个答案: