Faraday :: ConnectionFailed，Connection refused - connect（2）for“localhost”port 9200 Error Ruby on Rails [英] Faraday::ConnectionFailed, Connection refused - connect(2) for “localhost” port 9200 Error Ruby on Rails
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问题描述
Faraday :: ConnectionFailed在PostsController＃search
连接拒绝 - 连接（2）为localhost端口9200
这是我的代码：
终端显示弹性搜索已安装：
终端
警告：elasticsearch-1.7.3已安装
posts_controller.rb
class PostsController< ApplicationController
before_action：set_post，only：[：show，：edit，，update，，destroy]
def search
如果params [：search] ？
@posts = Post.search（params [：search]）
else
@posts = Post.all
end
end
＃GET / posts
＃GET /posts.json
def index
@posts = Post.all
end
＃GET / posts / 1
＃ GET /posts/1.json
def show
end
＃GET / posts / new
def new
@post = Post.new
end
＃GET / posts / 1 / edit
def edit
end
＃POST / posts
＃POST / posts .json
def create
@post = Post.new（post_params）
respond_to do | format |
if @ post.save
format.html {redirect_to @post，notice：'Post was successfully created。'
format.json {render：show，status：：created，location： @post}
else
format.html {render：new}
format.json {render json：@ post.errors，status：：unprocessable_entity}
end
end
end
＃PATCH / PUT / posts / 1
＃PATCH / PUT /posts/1.json
def update
respond_to do | format |
if @ post.update（post_params）
format.html {redirect_to @post，notice：'Post was successfully updated。'}
format.json {render：show，status：：ok ，位置：@post}
else
format.html {render：edit}
format.json {render json：@ post.errors，status：：unprocessable_entity}
end
end
end
＃DELETE / posts / 1
＃DELETE /posts/1.json
def destroy
@ post.destroy
respond_to do | format |
format.html {redirect_to posts_url，notice：'Post was successfully sold。'}
format.json {head：no_content}
end
end
private
＃使用回调来共享动作之间的共同设置或约束。
def set_post
@post = Post.find（params [：id]）
end
＃永远不要从可怕的互联网信任参数，只允许白名单通过。
def post_params
params.require（：post）.permit（：name）
end
end
model / post.rb
< ActiveRecord :: Base
searchkick
end
views / post / index.html.erb
< p id =notice><％= notice％> ;< / p为H.
<％= form_tag search_posts_path，方法：：get，class：navbar-form navbar-right，role：searchdo％>
< p>
<％= text_field_tag：search，params [：search]，class：form-control％>
<％= submit_tagSearch，name：nil，class：btn btn-default％>
< / p>
<％end％>
< h1>上市讯息< / h1>
< table>
< thead>
< tr>
< th> Name< / th>
< th colspan =3>< / th>
< / tr>
< / thead>
< tbody>
<％@ posts.each do | post | ％GT;
< tr>
< td><％= post.name％>< / td>
< td><％= link_to'显示'，post％>< / td>
< td><％= link_to'Edit'，edit_post_path（post）％>< / td>
< td><％= link_to'Destroy'，post，method：：delete，data：{confirm：'你确定吗？'}％>< / td>
< / tr>
<％end％>
< / tbody>
< / table>
< br>
<％= link_to'New Post'，new_post_path％>
views / search.html.erb
< table>
< thead>
< tr>
< th>搜索结果< / th>
< th colspan =3>< / th>
< / tr>
< / thead>
< tbody>
<％@ posts.each do | post | ％GT;
< tr>
< td><％= post.name％>< / td>
< td><％= link_to'显示'，post％>< / td>
< td><％= link_to'Edit'，edit_post_path（post）％>< / td>
< td><％= link_to'Destroy'，post，method：：delete，data：{confirm：'你确定吗？'}％>< / td>
< / tr>
<％end％>
< / tbody>
< / table>
config / routes.rb
Rails.application.routes.draw do
资源：帖子做
收集do
获取'搜索'
结束
end
end
这是我遇到错误显示的屏幕：
解决方案
连接（2）为localhost端口9200
看起来你的弹性搜索服务没有运行。您必须确保它正在运行。
要查看您的弹性搜索服务是否正在运行，请运行：
curl localhost：9200
如果它正在运行，那么它应该返回这样的哈希：
{
status：200，
name：Buzz ，
cluster_name：your_cluster_name，
version：{
number：1.4.5，
build_hash：... ，
build_timestamp：2015-04-27T08：06：06Z，
build_snapshot：false，
lucene_version：4.10.4
}
tagline：你知道，搜索
}
如果弹性搜索没有运行，这最有可能是您的情况，请使用以下命令启动：
sudo service elasticsearch start
这应该可以解决你的问题。
I am trying to add Searchkick gem in my app with Ruby on Rails but when i type a word in my search box i get this error in my app. I have installed elasticsearch and the latest version of java as required but still the error is the same. This is the error i am getting :
Faraday::ConnectionFailed in PostsController#search
Connection refused - connect(2) for "localhost" port 9200
Here's my code:
The Terminal shows that elastic search is installed:
Terminal
Warning: elasticsearch-1.7.3 already installed
posts_controller.rb
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
def search
if params[:search].present?
@posts = Post.search(params[:search])
else
@posts = Post.all
end
end
# GET /posts
# GET /posts.json
def index
@posts = Post.all
end
# GET /posts/1
# GET /posts/1.json
def show
end
# GET /posts/new
def new
@post = Post.new
end
# GET /posts/1/edit
def edit
end
# POST /posts
# POST /posts.json
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to @post, notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /posts/1
# PATCH/PUT /posts/1.json
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to @post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
# DELETE /posts/1
# DELETE /posts/1.json
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
@post = Post.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:name)
end
end
model/post.rb
class Post < ActiveRecord::Base
searchkick
end
views/post/index.html.erb
<p id="notice"><%= notice %></p>
<%= form_tag search_posts_path, method: :get, class: "navbar-form navbar-right", role: "search" do %>
<p>
<%= text_field_tag :search, params[:search], class: "form-control" %>
<%= submit_tag "Search", name: nil, class: "btn btn-default" %>
</p>
<% end %>
<h1>Listing Posts</h1>
<table>
<thead>
<tr>
<th>Name</th>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% @posts.each do |post| %>
<tr>
<td><%= post.name %></td>
<td><%= link_to 'Show', post %></td>
<td><%= link_to 'Edit', edit_post_path(post) %></td>
<td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
<br>
<%= link_to 'New Post', new_post_path %>
views/search.html.erb
<table>
<thead>
<tr>
<th>Search Result</th>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% @posts.each do |post| %>
<tr>
<td><%= post.name %></td>
<td><%= link_to 'Show', post %></td>
<td><%= link_to 'Edit', edit_post_path(post) %></td>
<td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
config/routes.rb
Rails.application.routes.draw do
resources :posts do
collection do
get 'search'
end
end
end
This is the screen i am getting with the error shown :
解决方案
Connection refused - connect(2) for "localhost" port 9200
Looks like your elastic search service is not running. You have to make sure it's running.
To see if your elastic search service is running, run:
curl localhost:9200
If it's running, then it should return a hash like this:
{
"status" : 200,
"name" : "Buzz",
"cluster_name" : "your_cluster_name",
"version" : {
"number" : "1.4.5",
"build_hash" : "...",
"build_timestamp" : "2015-04-27T08:06:06Z",
"build_snapshot" : false,
"lucene_version" : "4.10.4"
},
"tagline" : "You Know, for Search"
}
If elastic search is not running which is most likely the case for you, start it using this command:
sudo service elasticsearch start
That should fix your problem.
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