#13楼 @qinfanpeng #14楼 @adamshen #6楼 @nowherekai #1楼 @ywjno 貌似可以了。。。我先回想，等下写总结，太感谢各位了。

#8楼 @colinlll 我就直接写在app/views/homes/index.html.erb 整个页面就一个html

#6楼 @nowherekai #7楼 @qinfanpeng

• routes中代码如下 ruby match '/search', to: 'homes#search', via: :get
• Controller代码如下 ```ruby require 'docker' class HomesController < ApplicationController def search url = Docker::Container.all({}, Docker::Connection.new('tcp://192.168.1.10:2375', {})) list = url.collect { |url| [url.info["Image"], url.info["Ports"][0]["PublicPort"]]} @dsa = list.select {|k,j| k =~/ds/ } @ds = @dsa.select { |k,j| k =~/#{params[:search]}/ } render "index" end

def index url = Docker::Container.all({}, Docker::Connection.new('tcp://192.168.1.10:2375', {})) list = url.collect { |url| [url.info["Image"], url.info["Ports"][0]["PublicPort"]]} @dsa = list.select {|k,j| k =~/ds/ } @ds = @dsa.each {|k| k[1]=k[1]/100} end end

- view代码如下
```ruby
<%= form_tag("/search", method: :get) do %>
    <%= text_field_tag :search, params[:search], class: 'form-control search', placeholder: "search..." %>
<% end %>

<% @ds.each do |p, k| %>

• 现象：在index是正常，但search时候就出现如下报错 ```ruby Started GET "/search?utf8=%E2%9C%93&search=d" for 192.168.209.10 at 2016-01-05 02:19:20 +0000 Processing by HomesController#search as HTML Parameters: {"utf8"=>"✓", "search"=>"d"} Rendered homes/index.html.erb within layouts/application (266.8ms) Completed 500 Internal Server Error in 295ms

ActionView::Template::Error (undefined method `each' for nil:NilClass): 62: <% end %> 63: 64: 65: <% @ds.each do |p, k| %>

#4楼 @qinfanpeng 我有点小白，有个疑问同样的controller在index传递到view中是正常，但在方法search中却nil……

#1楼 @ywjno 没有search方法时候 each是好的

#1楼 @ywjno 依旧是undefined method `each' for nil:NilClass

Started GET "/search?utf8=%E2%9C%93&search=s" for 192.168.8.166 at 2016-01-04 14:09:40 +0000
Processing by HomesController#search as HTML
  Parameters: {"utf8"=>"✓", "search"=>"s"}
  Rendered homes/index.html.erb within layouts/application (269.6ms)
Completed 500 Internal Server Error in 312ms

ActionView::Template::Error (undefined method `each' for nil:NilClass):

#2楼 @mystery hhkb在路上……但最近tmux的F2 F3组合键岂不是很悲剧？

#5楼 @winnie 都要感谢 @afghl

#3楼 @winnie 厉害，3q winnie

#1楼 @afghl a .each {|k,j| j / 2} 这样？