使用Ruby on Rails为每个餐厅创建信息页面

I am trying to create an info page for each restaurant in a Ruby on rails app. I created an action info in Restaurant controller and added a line in routes.rb. but it gives an error

我正在尝试在Ruby on rails应用程序中为每个餐厅创建一个信息页面。我在餐厅控制器中创建了一个动作信息，并在routes.rb中添加了一行。但它给出了一个错误

"ActiveRecord::RecordNotFound in RestaurantsController#info" Couldn't find Restaurant with 'id'=..

“在餐馆控制器#info中的ActiveRecord :: RecordNotFound”找不到带有'id'的餐馆= ..

What is wrong with my code?

我的代码出了什么问题？

This is my Restaurant controller:

这是我的餐厅控制器：

class RestaurantsController < ApplicationController
 before_action :set_restaurant, only: [:show, :edit, :update, :destroy, :info]

  def info
  end 

  private
  def set_restaurant
    @restaurant = Restaurant.find(params[:id]) 
  end
end

This is my routes.rb:

这是我的routes.rb：

Rails.application.routes.draw do

 resources :restaurants do 
  get '/info', to: 'restaurants#info'
 end

end

And this a link to restaurant info page:

这是餐厅信息页面的链接：

<%= link_to 'Info', restaurant_info_path(@restaurant) %>

2 个解决方案

#1

ActiveRecord::RecordNotFound in RestaurantsController#info

RestaurantsController中的ActiveRecord :: RecordNotFound #info

By having the custom route nested inside the resources :restaurants, generates the route with wrong keys. When you run rake routes, you can see this route

通过将自定义路由嵌套在资源：restaurants中，生成具有错误键的路由。当您运行rake路线时，您可以看到此路线

restaurant_info GET  /restaurants/:restaurant_id/info(.:format)  restaurants#info

So this route has :restaurant_id not :id. So you cannot do params[:id] to fetch the value here in this line @restaurant = Restaurant.find(params[:id]) which fails with that error. Changing params[:id] to params[:restaurant_id] should solve your problem but that is not the right solution.

所以这条路线有：restaurant_id not：id。所以你不能用params [：id]来获取这行@restaurant = Restaurant.find（params [：id]）中的值，该值因错误而失败。将params [：id]更改为params [：restaurant_id]应该可以解决您的问题，但这不是正确的解决方案。

The obvious and the ideal solution would be to tweak your custom route, so it can generated like this

显而易见且理想的解决方案是调整自定义路由，因此它可以像这样生成

 restaurant_info GET  /restaurants/:id/info(.:format)  restaurants#info

You can tweak your custom route to below to achieve this and not having that nested inside resources :restaurants

您可以将自定义路由调整到下面以实现此目的，而不是嵌套内部资源：餐馆

get 'restaurants/:id/info', to: 'restaurants#info', as: :restaurant_info
resources :restaurants

#2

This is because the set_restaurant method isn't getting any params, check that and come back if it is receiving them correctly.

这是因为set_restaurant方法没有得到任何参数，检查并返回它是否正确接收它们。

#1