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我正在开发一个没有模型的 Rails 应用程序。我在 lib, 中有一个类FakeMaker，它构建了一堆用于显示目的的假实体。

我想测试删除功能，但问题是每次我点击控制器时我的假数据集都会重新初始化。

我只想运行一次数据测试创建器，这样我就只有一组假数据。

我曾尝试在会话存储中使用||=, before_filter, 类方法FakeMaker，但它们似乎都有每次点击控制器时重新初始化数据集的问题。

控制器代码：

class HomeController < ApplicationController
  include FakeMaker

  before_filter :set_up_fake_data

  def index
    @workstations = @data[:workstations]
    @data_sources = @data[:data_sources]
  end

  private

  def set_fake_data
    @data ||= session[:fake_data]
  end

  def initialize_data
    session[:fake_data] = set_up_fake_data
  end
end

lib中的FakeMaker：

module FakeMaker
  include ActionView::Helpers::NumberHelper

  SOURCE_CIDNE = "CIDNE"
  SOURCE_DCGS = "DCGS"
  TYPES_CIDNE = Faker::Lorem.words(num = 10)
  TYPES_DCGS = Faker::Lorem.words(num = 4)

  def set_up_fake_data
    @data ||= { workstations: fake_maker("workstation", 8), data_sources: fake_maker("data_source", 2) }
  end

  def fake_maker(type, count)
    fake = []
    case type
    when "report"
      count.times { fake << fake_report }
    when "workstation"
      count.times { fake << fake_workstation }
    when "data_source"
      fake = fake_data_source
    end
    fake
  end

  def fake_report
    report = { source: [SOURCE_CIDNE, SOURCE_DCGS].sample,
               count: number_with_delimiter(Faker::Number.number(5), :delimiter => ',') }
    report[:type] = report[:source] == SOURCE_CIDNE ? TYPES_CIDNE.sample : TYPES_DCGS.sample.capitalize
    report
  end

  def fake_workstation
    { name: Faker::Lorem.word,
      downloaded: number_with_delimiter(Faker::Number.number(3), :delimiter => ','),
      available: number_with_delimiter(Faker::Number.number(5), :delimiter => ','),
      last_connect: fake_time,
      queueJSON: fake_queueJSON,
      historyJSON: fake_historyJSON }
  end

  def fake_data_source
    data_sources = []
    ["CIDNE", "DCGS"].each do |source|
      data_sources << { type: source,
                        name: Faker::Internet.url,
                        status: ["UP", "DOWN"].sample }
    end
    data_sources
  end


  def fake_historyJSON
    history = []
    12.times { history << fake_history }
    history
  end

  def fake_queueJSON
    queue = []
    35.times { queue << fake_queue }
    queue
  end

  def fake_history
    { sentTimestamp: fake_time,
      reportID: Faker::Number.number(5)}
  end

  def fake_queue
    { priority: Faker::Number.number(3),
      queuedTimestamp: fake_time,
      reportID: Faker::Number.number(5)}
  end

  def fake_time
    Random.rand(10.weeks).ago.strftime("%Y-%m-%d %H:%M:%S")
  end


end
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