对这个错误感到困惑:

NameError in ProductionController#weekly_schedule
uninitialized constant ProductionController::WeeklySchedulePdf

我使用的是prawn_rails gem,以及http://www.sitepoint.com/pdf-generation-rails/教程中的以下代码。
这是我的控制器片段。。。
class ProductionController < ApplicationController

  def weekly_schedule
    @tickets = Ticket.where(active: true,
                            manufacturing_location: session[:factory]).
                            order(:calendar_date).order(:calendar_order)

    if @tickets.size.zero?
      @first_day, @last_day = Date.current, Date.current
    else
      @first_day = @tickets.minimum(:calendar_date)
      @last_day  = @tickets.maximum(:calendar_date)
      #@dayspan = (@last_day - @first_day).to_i
    end
    vars = [@tickets, @first_day, @last_day]
    respond_to do |format|
      format.html
      format.pdf do
        pdf = WeeklySchedulePdf.new(vars)
        send_data pdf.render, filename: 'weekly_schedule.pdf', type: 'application/pdf'
      end
    end
  end

和我的虾文件,在app/pdf/weekly_schedule.rb中
class WeeklySchedulePdf < Prawn::Document
  def initialize(vars)
    super
    @tickets = vars.first
    @first_day = vars.second
    @last_day = vars.third
    #header
    #text_content
    #table_content
  end

最佳答案

结果我所要做的(使用rails 4.2)就是将文件从weekly_schedule.rb重命名为weekly_schedule_pdf.rb

关于ruby-on-rails - Ruby NameError,未初始化的常量,使用Prawn,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/30132417/

10-12 17:14
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