小编Ami*_*tel的帖子

<%= f.check_box :openid_enabled %>
<%= f.label :openid_enabled, 'OpenID' %>

上面的代码生成了这个HTML

<input type="hidden" value="0" name="application[openid_enabled]">
<input type="checkbox" value="1" name="application[openid_enabled]" id="application_openid_enabled">
<label for="application_openid_enabled">OpenID</label>

并且标签显示为

[x]
OpenID

代替

[x] OpenID

我是否需要设计样式或者rails帮助程序是否具有一些内置功能？

添加

我在我的Rails应用程序中使用twitter bootstrap CSS框架.

我正在阅读Rails 3 Way的书，并感到困惑：

：after_add => callback 通过<<方法将记录添加到集合中后调用。不是由集合的create方法触发的

据我了解book.chapters.create（title：'第一章'）不会调用before_add回调，但实际上是在调用。

class Book < ActiveRecord::Base
  attr_accessible :title
  has_many :chapters, :before_add => :add_chapter

  private
    def add_chapter(chapter)
      logger.error('chapter added to book')
    end
end

class Chapter < ActiveRecord::Base
  belongs_to :book
  attr_accessible :title
end

在控制台中（最小）

 > b = Book.first
  Book Load (0.1ms)  SELECT "books".* FROM "books" LIMIT 1
 > b.chapters.create(title: 'Last Chapter')
  begin transaction
chapter added to book
  INSERT INTO "chapters" ....
  commit transaction

在这里，您可以看到after_add为调用了回调create。

我误会了吗？

编辑

b.chapters.new(title: 'New Chapter')
b.chapters.build(title: 'New Chapter') …

我在eclipse indigo的jsp中添加以下EL时遇到错误.

<form action="${pageContext.request.contextPath}/user">
...
</form>

但是,应用程序运行正常,没有任何编译错误.我仔细检查了servlet-api 2.5和jst 1.2 jar是否在Eclipse IDE的类路径中.

如果我删除${pageContext.request.contextPath}它不会显示任何错误.

任何人都可以帮我解决这个错误吗？

使用TweetStream运行以下示例时,我得到提到的错误.

tweets.rb

require 'tweetstream'

TweetStream.configure do |config|
  config.consumer_key       = '<CONSUMER KEY>'
  config.consumer_secret    = '<CONSUMER SECRET>'
  config.oauth_token        = '<OAUTH TOKEN>'
  config.oauth_token_secret = '<OAUTH TOKEN SECRET'
  config.auth_method        = :oauth
end

TweetStream::Client.new.track('ruby') do |status|
  puts "#{status.text}"
end

错误

$ ruby tweets.rb 
/home/amit/.rvm/gems/ruby-1.9.3-p194/gems/tweetstream-2.3.0/lib/tweetstream/client.rb:96:in `track': undefined method `extract_options!' for ["ruby"]:Array (NoMethodError)
        from tweets.rb:11:in `<main>'
    https://github.com/intridea/tweetstream

我错过了什么吗？

我已经使用Capistrano 3部署了应用程序.我一直在跟踪错误.

`require': cannot load such file -- bundler/setup (LoadError)

这是cron选项卡列表

PATH=/home/deploy/magnificent/shared/bundle/ruby/2.2.0/bin:/usr/local/rvm/gems/ruby-2.2.2/bin:/usr/local/rvm/gems/ruby-2.2.2@global/bin:/usr/local/rvm/rubies/ruby-2.2.2/bin:/usr/local/rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

* * * * * /bin/bash -l -c 'cd /home/deploy/magnificent/releases/20150830045359 && bin/rails runner -e production '\''Document.process_pending'\'' >> log/cron_standard.log 2>> log/cron_error.log'

和schedule.rb

env :PATH, ENV['PATH']
set :output, { error: 'log/cron_error.log', standard: 'log/cron_standard.log'}

every 1.minutes do
  runner 'Document.process_pending'
end

请注意,所有宝石都安装在defaultgemset中

我有一个字符串表示带有时区的日期/时间.我想将时区部分更改为UTC+00:00

请帮我写REGEXT匹配+05:30,-03:30等等而代之以+00:00

我试过 "2012-04-17T15:40+05:30".gsub!(/\+\d\d:\d\d/, '+00:00')给了我预期的结果,但我不知道如何匹配-5:30

我很感激,如果有人帮我写了正则表达式,并且可以使用2012-04-17T15:40+05:30和2012-04-17T15:40-05:30

谢谢,阿米特帕特尔

这是装饰师

应用程序/装饰/ campaign_decorator.rb

class CampaignDecorator < Draper::Decorator
  delegate_all Campaign::Campaign

  def created_at
    helpers.content_tag :span, class: 'time' do
      object.created_at.strftime("%a %m/%d/%y")
    end
  end

  def custom_method
    'hello there!'
  end
end

当我调用CampaignDecorator.custom_method它时,找不到方法.还CampaignDecorator.first.created_at返回未格式化的日期.

任何人都可以告诉我我错过了什么？

我有许多服务类，其call方法在参数上有变化。

notify我想在每个方法的末尾调用一个函数call。我不想修改这些服务类，但我愿意修改基类。

我正在玩，ActiveSupport::Callbacks但它不能达到不修改服务类的目的。

require 'active_support'
class Base
  include ActiveSupport::Callbacks
  define_callbacks :notifier

  set_callback :notifier, :after do |object|
    notify()
  end

  def notify
    puts "notified successfully"
  end
end

class NewPost < Base
  def call
    puts "Creating new post on WordPress"
    # run_callbacks :notifier do
    #   puts "notifying....."
    # end
  end
end

class EditPost < Base
  def call
    puts "Editing the post on WordPress"
    # run_callbacks :notifier do
    #   puts "notified successfully"
    # end
  end
end

person …

使用 RSpec 的模拟/存根，如何为该find_by_id方法编写单元测试？

我想使用 RSpec，而不是 WebMock 或 VCR。如何为请求/响应创建存根？

class RapidApiClient
  HOST_URL = 'https://brianiswu-open-brewery-db-v1.p.rapidapi.com/breweries'
  API_KEY  = 'private_api_key'

   def request_api(url)
    Excon.get(
      url,
      headers: {
        'X-RapidAPI-Host' => HOST_URL,
        'X-RapidAPI-Key' => 'API_KEY'
      }
    )
  end

 def find_by_id(id)
    response = request_api("#{HOST_URL}/#{id}")
    return nil if response.status != 200
    JSON.parse(response.body)
 end  
end

响应是：

[
{"id":4 , "name":"Ban Brewing Company" , "brewery_type":"micro", "city":"Tulsa" , "state":"OK"}
{"id":44,"name":"Tab Brewing" "brewery_type":"micro", "city":"Birmingham", "state":"MO"}
]

我是Rails的新手,并试图用TDD和BDD编写应用程序.

现在,在其中一个模型中,对字段的长度进行了验证.有一个RSpec有一个例子来检查这个特定字段的长度验证.

这是Model类

class Section < ActiveRecord::Base

    # Validations
    validates_presence_of :name, length: { maximum: 50 }

end

和RSpec

require 'spec_helper'

describe Section do
    before do
      @section = Section.new(name:'Test')
    end

    subject { @section }

    # Check for attribute accessor methods
    it { should respond_to(:name) }


    # Sanity check, verifying that the @section object is initially valid
    it { should be_valid }

    describe "when name is not present" do
        before { @section.name = "" }
        it { should_not be_valid }
    end

    describe …

在部署Rails 3应用程序时,我们遇到以下错误.请帮助解决此问题.

$ cap deploy
    triggering load callbacks
  * 2015-03-17 19:25:22 executing `deploy'
  * 2015-03-17 19:25:22 executing `deploy:update'
 ** transaction: start
  * 2015-03-17 19:25:22 executing `deploy:update_code'
    updating the cached checkout on all servers
    executing locally: "git ls-remote git@github.com:BoTreeConsultingTeam/IntegrityMatters.git master"
    command finished in 3579ms
  * executing "if [ -d /home/ubuntu/integrity_matters/shared/cached-copy ]; then cd /home/ubuntu/integrity_matters/shared/cached-copy && git fetch -q origin && git fetch --tags -q origin && git reset -q --hard eb49600f7de21f4b2b1de8884f70dd5a88837f41 && git clean -q -d -x -f; else git clone …