如何在Rails中显示搜索表单的结果？

Question

I made a simple search form, that is basically searching through a couple of names on some items. 我做了一个简单的搜索表单，基本上是在某些项目上搜索几个名称。 I want to display the results on a new page, if the search query can be found in the name. 如果可以在名称中找到搜索查询，我想在新页面上显示结果。 I think it's really simple, just new to rails. 我认为这很简单，只是对Rails的新手。

post_controler.rb - post_controler.rb-

class PostsController < ApplicationController
def index
    @posts = Post.all
  if params[:search]
    @posts = Post.search(params[:search]).order("created_at DESC")
  else
    @posts = Post.all.order('created_at DESC')
  end
end
end

routes.rb - routes.rb-

Rails.application.routes.draw do
  get '/index' => 'posts#index'
  resources :post, :posts
end

application.html.erb - application.html.erb-

<!DOCTYPE html>
<html>
<head>
  <title>Trial</title>
  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
  <%= stylesheet_link_tag "defaults", media: "all", "data-turbolinks-track" => true %>
  <%= csrf_meta_tags %>
</head>
<body>

<%= yield %>

</body>
</html>

index.html.erb - index.html.erb-

    <html>
        <body>
                <div class="input-group">
                    <%= form_tag(posts_path, :method => "get", id: "search-form") do %>
                    <%= text_field_tag :search, params[:search], placeholder: "Search Posts", class: 'form-control' %>
                <span class="input-group-btn">
                     <%= submit_tag "Search", class: 'btn btn-success' %>
                </span>
                <% end %>
                </div>
                </form>

</body>
</html>

post.rb post.rb

class Post < ActiveRecord::Base
def self.search(search)
  where("name LIKE ?", "%#{search}%") 
end

end

Answer 1

You can put this code in your index.html.erb file. 您可以将此代码放在index.html.erb文件中。 It doesn't matter whether there is search parameter or not. 是否有搜索参数都没有关系。 Just put the following code below your form. 只需将以下代码放在表单下方即可。

<% @posts.each do |post| %>
  <p>
    <%= post.name %>
  </p> 
<% end %>

Your controller code is fine. 您的控制器代码很好。 But doing the following will make it efficient. 但是，执行以下操作将使其高效。 It will access database once. 它将访问数据库一次。

def index
  @posts = Post.all.order('created_at DESC')
  @posts = @posts.search(params[:search]) if params[:search].present?
end

Updated for redirecting to new page 已更新，可重定向到新页面

post_controller.rb post_controller.rb

def search
  @posts = Post.all.order('created_at DESC')
  @posts = @posts.search(params[:search]) if params[:search].present?
end

routes.rb routes.rb

resources :posts do
  member do
    post :search
  end
end

search.html.erb search.html.erb

<% @posts.each do |post| %>
  <p>
    <%= post.name %>
  </p> 
<% end %>

Hope it helps you. 希望对您有帮助。 And in the form_tag of index.html.erb change the path to search. 并在index.html.erb的form_tag中更改搜索路径。

如何在Rails中显示搜索表单的结果？

问题描述

1 个解决方案

解决方案1
0 2015-06-25 16:44:58

如何在Rails中显示搜索表单的结果？

问题描述

1 个解决方案

解决方案1 0 2015-06-25 16:44:58

解决方案1
0 2015-06-25 16:44:58