运行变成 "uninitialized constant" 每当 gem

Question

今天尝试使用 whenever gem。运行进入这个错误 uninitialized constant EntriesController::RedditScrapper ...我该如何解决这个问题？

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class EntriesController < ApplicationController


def index
  @entries = Entry.all
end

def scrape

    RedditScrapper.scrape

    respond_to do |format|
      format.html { redirect_to entries_url, notice: 'Entries were successfully scraped.' }
      format.json { entriesArray.to_json }
    end
  end

end

lib/reddit_scrapper.rb

require 'open-uri'

module RedditScrapper
  def self.scrape
    doc = Nokogiri::HTML(open("https://www.reddit.com/"))

    entries = doc.css('.entry')
    entriesArray = []
    entries.each do |entry|
      title = entry.css('p.title > a').text
      link = entry.css('p.title > a')[0]['href']
      entriesArray << Entry.new({ title: title, link: link })
    end

    if entriesArray.map(&:valid?)
      entriesArray.map(&:save!)
    end
  end
end

config/schedule.rb

RAILS_ROOT = File.expand_path(File.dirname(__FILE__) + '/')

every 2.minutes do 
  runner "RedditScrapper.scrape", :environment => "development"
end

请帮我找出正确的跑步者任务写入...

Application.rb

require_relative 'boot'

require 'rails/all'

Bundler.require(*Rails.groups)

module ScrapeModel
  class Application < Rails::Application
   config.autoload_paths << Rails.root.join('lib')
  end
end

Answer 1

据我所知，您已将 RedditScrapper 定义为模块，但您正试图将其用作 class...（即调用其上的方法）。

您可以：将其变成 class（只需将 module 更改为 class）或将所有相关方法定义为 module_functions

根据您选择的用途，前者可能更可取。

Answer 2

Rails 不会自动加载 lib 文件夹。您需要将以下行添加到 config/application.rb:

config.autoload_paths << Rails.root.join('lib')

运行变成 "uninitialized constant" 每当 gem

Running into "uninitialized constant" with whenever gem

ruby

cron

ruby-on-rails

whenever

运行 变成 "uninitialized constant" 每当 gem

Running into "uninitialized constant" with whenever gem

ruby

cron

ruby-on-rails

whenever

运行变成 "uninitialized constant" 每当 gem