rails学习笔记：维护商品信息任务C_商品信息维护是什么意思-优快云博客

本文链接：https://blog.youkuaiyun.com/Three_fish/article/details/48751269

创建商店控制器

rails generate controller store index

修改../config/routes.rb 使http://localhost:3000/store/index 成为根目录

加 root 'store#index'

Rails.application.routes.draw do
get 'store/index'

resources :products

root 'store#index'

end

假定可以从模型中得到可销售的商品清单

修改 /app/controllers/store_controller.rb

class StoreController < ApplicationController
def index
@products = Product.all
end
end

修改 /app/models/product.rb 以字母顺序显示商品清单

添加default_scope {order(:title)}

编写视图模板/app/views/store/index.html.erb

<% if notice %>
<p id="notice"><%= notice %></p>
<% end %>
<h1>Your Pragmatic Catalog</h1>

<% @products.each do |product| %>
<div class="entry">
    <%= image_tag(product.image_url) %>
    <h3><%= product.title %></h3>
    <%= sanitize(product.description) %>
    <div class="price_line">
      <span class="price"><%= product.price %></span>
    </div>
</div>
<% end %>

在没有其他页面布局的情况下，所有控制器的视图会用/app/views/layouts/application.html.erb 这个布局

现在设置一个占位布局

<!DOCTYPE html>
<html>
<head>
<title>Pragprog Books Online Store</title>
<%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
<%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
<%= csrf_meta_tags %>
</head>
<body id='store'>
<div id='banner'>
    <%= image_tag('logo.png') %>
    <%= @page_title || "Pragmatic Bookshelf" %>
</div>
<div id='columns'>
    <div id='side'>
      <a href="http://localhost:3000/">home</a> <br/>
      <a href="#">Questions</a><br/>
      <a href="#">News</a><br/>
      <a href="#">Contact</a><br/>
    </div>
    <div id='main'>
      <%= yield %>
    </div>
</div>

</body>
</html>

在depot.css 中加入以下代码

#banner {
background: #9c9;
padding-top: 10px;
padding-bottom: 10px;
border-bottom: 2px solid;
font: small-caps 40px/40px "Times New Roman", serif;
color: #282;
text-align:center;
}

#banner img{
float: left;
}

#columns {
background: #141;
}

#main {
margin-left: 17em;
padding-top: 4ex;
padding-left: 2em;
background: white;
}

#side{
float: left;
padding-top: 1em;
padding-left: 1em;
padding-bottom: 1em;
width: 16em;
background: #141;
}

#side a{
color: #bfb;
font-size: small;
}