【发布时间】：2014-09-03 16:51:00
【问题描述】：
我的“办公室”视图显示在产品数据库中找到的办公室产品。此视图中显示了多个产品，因此我希望用户能够单击一个办公产品，该产品会转到仅显示该产品详细信息的“显示”视图。
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>
显示视图中产品的代码如下所示：-
<%= @products.title(:id) %>
办公产品在办公视图中正确显示。当点击产品link_to 时，浏览器使用action: :index 重定向，因为@products.nil? 被评估为真。
我应该如何将此产品详细信息传递到显示视图以便看到产品详细信息？
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“显示”视图的部分内容：-
<h2>Individual Product</h2>
<%= @products.title(:id) %>
您目前可以看到的实际上根本不是任何东西，因为我只是在测试将信息传递给它。
以下是 rake 路由的结果：-
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
【问题讨论】：
-
您没有在链接中传递您的产品，但它应该会给您一个路由错误。你没有收到任何错误？
-
你能显示你的 routes.rb 文件和你的完整视图吗
-
嗨，Mandeep，没有路由错误，没有任何类型的错误，而是在单击时将用户直接重定向回“索引”页面。
-
奇怪的是你没有为你的路由
get "store/show"指定控制器和动作名称。你能发布 rake 路由的输出吗？ -
您好 Mandeep，感谢您抽出宝贵时间查看此内容。我已经在我的帖子中包含了 rake 路由的结果。
标签： ruby-on-rails link-to