我的“办公室”视图显示在产品数据库中找到的办公产品。此视图中显示了多个产品，因此我希望用户能够点击办公产品，该产品进入“展示”视图，仅显示产品详细信息。
我的商店控制器如下所示： -
class StoreController < ApplicationController
def index
@products = Product.all
end
def show
@products = Product.find_by(:id)
if @products.nil?
redirect_to action: :index
end
end
end
Office视图中的link_to代码如下所示： -
<p class="showArticle"><%= link_to 'Show Article', store_show_path %></p>
show视图中产品的代码如下所示： -
<%= @products.title(:id) %>
办公室产品在办公室视图中正确显示。点击产品link_to后，浏览器会使用action: :index重定向，因为@products.nil?评估为真。
如何将此产品详细信息传递到show视图中，以便查看产品详细信息？
以下是我的routes.rb文件： -
Easygifts::Application.routes.draw do
get "store/index"
get "store/writing"
get "store/office"
get "store/time"
get "store/home"
get "store/wellness"
get "store/travel"
get "store/bags"
get "store/leisure"
get "store/show"
resources :products
# The priority is based upon order of creation: first created -> highest priority.
# See how all your routes lay out with "rake routes".
# You can have the root of your site routed with "root"
root 'store#index', as: 'store'
# Example of regular route:
# get 'products/:id' => 'catalog#view'
# Example of named route that can be invoked with purchase_url(id: product.id)
# get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
# Example resource route (maps HTTP verbs to controller actions automatically):
# resources :products
# Example resource route with options:
# resources :products do
# member do
# get 'short'
# post 'toggle'
# end
#
# collection do
# get 'sold'
# end
# end
# Example resource route with sub-resources:
# resources :products do
# resources :comments, :sales
# resource :seller
# end
# Example resource route with more complex sub-resources:
# resources :products do
# resources :comments
# resources :sales do
# get 'recent', on: :collection
# end
# end
# Example resource route with concerns:
# concern :toggleable do
# post 'toggle'
# end
# resources :posts, concerns: :toggleable
# resources :photos, concerns: :toggleable
# Example resource route within a namespace:
# namespace :admin do
# # Directs /admin/products/* to Admin::ProductsController
# # (app/controllers/admin/products_controller.rb)
# resources :products
# end
end
以下是应用程序布局： -
<!DOCTYPE html>
<html>
<head>
<title>Easy Gifts UK Ltd - Home of promotional gifts</title>
<%= stylesheet_link_tag "application", media: "all", "data-turbolinks-track" => true %>
<%= javascript_include_tag "application", "data-turbolinks-track" => true %>
<%= csrf_meta_tags %>
</head>
<body class='<%= controller.controller_name %>'>
<div id="wrapper">
<div id="branding">
<%=link_to( image_tag("easyGiftsLogo.jpg", :width => "210", :height => "70", :alt => "Easy Gifts UK Logo"), store_path) %>
<div id="search2">
<p>search field</p>
</div>
</div>
<div id="content">
<%= yield %>
</div>
<div id="mainNav">
<ul>
<li><%= link_to_unless_current('Writing', { action: 'writing' }) %></li>
<li><%= link_to_unless_current('Office', { action: 'office' }) %></li>
<li><%= link_to_unless_current('Time', { action: 'time'}) %></li>
<li><%= link_to_unless_current('Home', { action: 'home'}) %></li>
<li><%= link_to_unless_current('Wellness', {action: 'wellness'}) %></li>
<li><%= link_to_unless_current('Travel', {action: 'travel'}) %></li>
<li><%= link_to_unless_current('Bags', {action: 'bags'}) %></li>
<li><%= link_to_unless_current('Leisure', {action: 'leisure'}) %></li>
</ul>
</div>
<div id="footer">
<ul>
<li><%= link_to 'Admin', products_path %></li>
<li><a href="#">link 2</a></li>
<li><a href="#">link 3</a></li>
</ul>
</div>
</div>
</body>
</html>
以下是“办公室”的部分内容： -
<%= image_tag("office (1).jpg", :class => "imgBorder", :width => "808", :height =>"228", :alt => "Office section - Easy Gifts UK Ltd") %>
<%= render "notice" %>
<% @products.each do |office| %>
<div class="item">
<%= link_to image_tag(office.image_url), image_path(office.image_url), class: 'fancybox' %>
<p><strong><%= office.item_code%></strong>
</br><em><%= truncate(office.title, length: 18) %></em></p>
<p class="showArticle"><%= link_to 'Show Article', store_show_path %></p>
<p class="addTo"><a href="#">Quote this item</a></p>
</div>
<% end %>
<p class="clear"><%= will_paginate @products %></p>
最后，以下是'show'视图的部分内容： -
<h2>Individual Product</h2>
<%= @products.title(:id) %>
你现在可以看到的并不是什么，因为我只是测试将信息传递给它。
以下是佣金路线的结果： -
c:\Sites\work\easygifts>rake routes
Prefix Verb URI Pattern Controller#Action
store_index GET /store/index(.:format) store#index
store_writing GET /store/writing(.:format) store#writing
store_office GET /store/office(.:format) store#office
store_time GET /store/time(.:format) store#time
store_home GET /store/home(.:format) store#home
store_wellness GET /store/wellness(.:format) store#wellness
store_travel GET /store/travel(.:format) store#travel
store_bags GET /store/bags(.:format) store#bags
store_leisure GET /store/leisure(.:format) store#leisure
store_show GET /store/show(.:format) store#show
products GET /products(.:format) products#index
POST /products(.:format) products#create
new_product GET /products/new(.:format) products#new
edit_product GET /products/:id/edit(.:format) products#edit
product GET /products/:id(.:format) products#show
PATCH /products/:id(.:format) products#update
PUT /products/:id(.:format) products#update
DELETE /products/:id(.:format) products#destroy
store GET / store#index
答案 0 :(得分：0)
您的代码中有几处错误：
一个。让我们看看你的路线，你的路线是你的路线：
store_show GET /store/show(.:format) store#show
对于show动作，你没有传递商店ID，所以当你试图在你的行动中找到它时它是零。
<强>修正
您应该使用rails resourceful routing。你可以这样做：
resources :stores do
collection do
get "writing"
get "office"
get "time"
get "home"
get "wellness"
get "travel"
get "bags"
get "leisure"
end
end
对于你的节目动作，这将创建一个这样的路线：
GET /stores/:id(.:format) stores#show
这将允许您在链接中传递商店ID，然后您可以在控制器操作中找到它
湾将您的链接更改为：
<p class="showArticle"><%= link_to 'Show Article', store_path(office) %></p> // notice we are now passing your product in path helper
℃。显示行动：
def show
@products = Product.find(params[:id]) # notice we have to use params[:id] to find your product also by default find searches your record with id so you don't need to use find_by
if @products.nil?
redirect_to action: :index
end
end