#<Faraday::ConnectionFailed>连接被拒绝-连接(2)

Question

在使用复选框在users/edit.html.erb中选择项目并按下保存后，我收到消息#<Faraday::ConnectionFailed> Connection refused - connect(2)。我选择的项位于一个名为amenities_list的数组中。这些东西都是布尔值。在尝试保存更改后，我收到#<Faraday::ConnectionFailed>。

users/edit.html.erb

<div class="tab-content group">

  <% amenities_list = User.amenities_list %>

  <ul>
    <% @user.boolean_array_from_amenities_integer.each_with_index do |amenity_available,index| %>
      <% if amenity_available %>
        <li class="available-amenity">
      <% else %>
        <li class="unavailable-amenity">
      <% end %>
          <%= amenities_list[index] %>
        </li>
    <% end %>
  </ul>
</div>

users_controller.rb

  def new
    @user = User.new
  end

  def create
    @user = User.new(params[:user])
    @user.id = current_user.id
    @user.set_amenities_from_options_list!(params[:user_amenities_indicies])
    if @user.save
      flash[:success] = "Thank you for signing up! A confirmation email has been sent to your inbox"
      redirect_to users_path
    else
      render :new
    end
  end

  def edit
    @user.id = current_user.id
    @user.set_amenities_from_options_list!(params[:user_amenities_indicies])
  end

user.rb

  def self.amenities_list
    ["Smoking Allowed",
     "Pets Allowed",
     "TV",
     "Cable TV",
     "Internet",
     "Wireless Internet",
     "Air Conditioning",
     "Heating",
     "Elevator in Building",
     "Handicap Accessible",
     "Pool",
     "Kitchen",
     "Free parking on premise",
     "Doorman",
     "Gym",
     "Hot Tub",
     "Indoor Fireplace",
     "Buzzer/Wireless Intercom",
     "Breakfast",
     "Family/Kid Friendly",
     "Suitable for Events",
     "Washer",
     "Dryer"]
  end

  def self.integer_from_options_list(options_list)
    # convert options list given by radio buttons into one-hot integer
    amenities = 0;
    if options_list
      options_list.each do |option|
        amenities += 2 ** option.to_i
      end
  end

    amenities
  end

   def self.find_with_filters(filters)
    filtered_users = User
        if filters[:amenities]
          amenities = User.integer_from_options_list(filters[:amenities])
          filtered_users = filtered_users.where("amenities & ? = ?", amenities, amenities)
        end
    end


 def set_amenities_from_options_list!(options_list)
    self.amenities = User.integer_from_options_list(options_list)
  end

    def boolean_array_from_amenities_integer
    [].tap do |amenities_list|
      User.amenities_list.length.times do |order|
        amenities_list << (self.amenities & 2 ** order > 0)
        end
      end
    end

end

gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (4.0.3)
      actionpack (= 4.0.3)
      mail (~> 2.5.4)
    actionpack (4.0.3)
      activesupport (= 4.0.3)
      builder (~> 3.1.0)
      erubis (~> 2.7.0)
      rack (~> 1.5.2)
      rack-test (~> 0.6.2)
    activemodel (4.0.3)
      activesupport (= 4.0.3)
      builder (~> 3.1.0)
    activerecord (4.0.3)
      activemodel (= 4.0.3)
      activerecord-deprecated_finders (~> 1.0.2)
      activesupport (= 4.0.3)
      arel (~> 4.0.0)
    activerecord-deprecated_finders (1.0.3)
    activesupport (4.0.3)
      i18n (~> 0.6, >= 0.6.4)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    arel (4.0.2)
    atomic (1.1.16)
    bcrypt (3.1.7)
    bcrypt-ruby (3.1.5)
      bcrypt (>= 3.1.3)
    bootstrap-sass (3.1.1.0)
      sass (~> 3.2)
    builder (3.1.4)
    capybara (2.1.0)
      mime-types (>= 1.16)
      nokogiri (>= 1.3.3)
      rack (>= 1.0.0)
      rack-test (>= 0.5.4)
      xpath (~> 2.0)
    carrierwave (0.10.0)
      activemodel (>= 3.2.0)
      activesupport (>= 3.2.0)
      json (>= 1.7)
      mime-types (>= 1.16)
    childprocess (0.5.1)
      ffi (~> 1.0, >= 1.0.11)
    coderay (1.1.0)
    coffee-rails (4.0.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.7.0)
    columnize (0.3.6)
    debugger (1.6.6)
      columnize (>= 0.3.1)
      debugger-linecache (~> 1.2.0)
      debugger-ruby_core_source (~> 1.3.2)
    debugger-linecache (1.2.0)
    debugger-ruby_core_source (1.3.2)
    diff-lcs (1.2.5)
    elasticsearch (1.0.2)
      elasticsearch-api (= 1.0.2)
      elasticsearch-transport (= 1.0.2)
    elasticsearch-api (1.0.2)
      multi_json
    elasticsearch-model (0.1.4)
      activesupport (> 3)
      elasticsearch (> 0.4)
      hashie
    elasticsearch-transport (1.0.2)
      faraday
      multi_json
    erubis (2.7.0)
    execjs (2.0.2)
    factory_girl (4.2.0)
      activesupport (>= 3.0.0)
    factory_girl_rails (4.2.1)
      factory_girl (~> 4.2.0)
      railties (>= 3.0.0)
    faker (1.3.0)
      i18n (~> 0.5)
    faraday (0.9.0)
      multipart-post (>= 1.2, < 3)
    ffi (1.9.3)
    figaro (0.7.0)
      bundler (~> 1.0)
      rails (>= 3, < 5)
    geocoder (1.1.9)
    hashie (3.0.0)
    hike (1.2.3)
    i18n (0.6.9)
    jbuilder (1.5.3)
      activesupport (>= 3.0.0)
      multi_json (>= 1.2.0)
    jquery-rails (3.1.0)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    jquery-ui-rails (4.2.0)
      railties (>= 3.2.16)
    json (1.8.1)
    jwt (0.1.11)
      multi_json (>= 1.5)
    mail (2.5.4)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    method_source (0.8.2)
    mime-types (1.25.1)
    mini_magick (3.7.0)
      subexec (~> 0.2.1)
    mini_portile (0.5.2)
    minitest (4.7.5)
    multi_json (1.9.0)
    multi_xml (0.5.5)
    multipart-post (2.0.0)
    nokogiri (1.6.1)
      mini_portile (~> 0.5.0)
    oauth (0.4.7)
    oauth2 (0.9.3)
      faraday (>= 0.8, < 0.10)
      jwt (~> 0.1.8)
      multi_json (~> 1.3)
      multi_xml (~> 0.5)
      rack (~> 1.2)
    pg (0.17.1)
    polyglot (0.3.4)
    pry (0.9.12.6)
      coderay (~> 1.0)
      method_source (~> 0.8)
      slop (~> 3.4)
    pry-debugger (0.2.2)
      debugger (~> 1.3)
      pry (~> 0.9.10)
    quiet_assets (1.0.2)
      railties (>= 3.1, < 5.0)
    rack (1.5.2)
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (4.0.3)
      actionmailer (= 4.0.3)
      actionpack (= 4.0.3)
      activerecord (= 4.0.3)
      activesupport (= 4.0.3)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.0.3)
      sprockets-rails (~> 2.0.0)
    rails_12factor (0.0.2)
      rails_serve_static_assets
      rails_stdout_logging
    rails_serve_static_assets (0.0.2)
    rails_stdout_logging (0.0.3)
    railties (4.0.3)
      actionpack (= 4.0.3)
      activesupport (= 4.0.3)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.1.1)
    rdoc (4.1.1)
      json (~> 1.4)
    rspec-core (2.13.1)
    rspec-expectations (2.13.0)
      diff-lcs (>= 1.1.3, < 2.0)
    rspec-mocks (2.13.1)
    rspec-rails (2.13.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      railties (>= 3.0)
      rspec-core (~> 2.13.0)
      rspec-expectations (~> 2.13.0)
      rspec-mocks (~> 2.13.0)
    rubyzip (0.9.9)
    sass (3.2.15)
    sass-rails (4.0.2)
      railties (>= 4.0.0, < 5.0)
      sass (~> 3.2.0)
      sprockets (~> 2.8, <= 2.11.0)
      sprockets-rails (~> 2.0.0)
    sdoc (0.4.0)
      json (~> 1.8)
      rdoc (~> 4.0, < 5.0)
    selenium-webdriver (2.35.1)
      childprocess (>= 0.2.5)
      multi_json (~> 1.0)
      rubyzip (< 1.0.0)
      websocket (~> 1.0.4)
    simple_form (3.0.1)
      actionpack (>= 4.0.0, < 4.1)
      activemodel (>= 4.0.0, < 4.1)
    slop (3.5.0)
    sorcery (0.8.5)
      bcrypt-ruby (>= 3.0)
      oauth (~> 0.4.4)
      oauth2 (>= 0.8.0, < 1.0.0)
    sprockets (2.11.0)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sprockets-rails (2.0.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (~> 2.8)
    state_machine (1.2.0)
    subexec (0.2.3)
    thor (0.18.1)
    thread_safe (0.2.0)
      atomic (>= 1.1.7, < 2)
    tilt (1.4.1)
    treetop (1.4.15)
      polyglot
      polyglot (>= 0.3.1)
    tzinfo (0.3.39)
    uglifier (2.5.0)
      execjs (>= 0.3.0)
      json (>= 1.8.0)
    websocket (1.0.7)
    xpath (2.0.0)
      nokogiri (~> 1.3)

PLATFORMS
  ruby

DEPENDENCIES
  bootstrap-sass (~> 3.1.1)
  capybara (= 2.1.0)
  carrierwave
  coffee-rails (~> 4.0.0)
  elasticsearch-model
  factory_girl_rails (= 4.2.1)
  faker
  figaro
  geocoder
  jbuilder (~> 1.2)
  jquery-rails
  jquery-ui-rails
  mini_magick
  pg
  pry-debugger
  quiet_assets
  rails (= 4.0.3)
  rails_12factor
  rspec-rails (= 2.13.1)
  sass-rails (~> 4.0.0)
  sdoc
  selenium-webdriver (= 2.35.1)
  simple_form
  sorcery
  state_machine
  uglifier (>= 1.3.0)

Answer 1

如果消息#<Faraday::ConnectionFailed> Connection refused - connect(2)后面跟着Connection refused - connect(2) for "localhost" port 9200

然后使用以下命令确认elastic search服务是否正在运行

curl localhost:9200

正常情况下，elastic search在9200端口接收请求。如果没有运行，您需要使用命令(在Ubuntu中) sudo service elasticsearch start启动。请等待几秒钟，然后重试。