如何顯示個別微博的鏈接？ （在軌道3上的紅寶石）

Question

我跟着一個rails 3教程，我試圖讓這個工作正常。

，用戶提出的是在http://localhost:3000/users/username

UsersController中列出的所有微柱

def show 
    @user = User.find(params[:id]) 
    @microposts = @user.microposts.paginate page: params[:page], :per_page => 15 
    end 

每個微柱都有一個ID

create_table "microposts", :force => true do |t| 
    t.text  "content" 
    t.integer "user_id" 
    t.datetime "created_at",       :null => false 
    t.datetime "updated_at",       :null => false 
    t.string "image" 
    t.text  "comment_content" 
    end 

我如何設定，讓這樣的鏈接http://localhost:3000/users/username/micropost_id（如果有效）將導致只有該微博的頁面？

我希望顯示完全一樣，除了在新頁面上單獨顯示。

用戶表

create_table "users", :force => true do |t| 
    t.string "name" 
    t.string "email" 
    t.timestamp "created_at",       :null => false 
    t.timestamp "updated_at",       :null => false 
    t.string "password_digest" 
    t.string "remember_token" 
    end 

我的配置路線

MyApp::Application.routes.draw do 
    resources :authentications 

resources :microposts, :path => "posts" 


root to: 'static_pages#home' 

      ActiveAdmin.routes(self) 


    resources :users do 
    member do 
     get :following, :followers 
    end 
    end 
    resources :sessions, only: [:new, :create, :destroy] 
    resources :microposts, only: [:create, :destroy] 
    resources :relationships, only: [:create, :destroy] 
    resources :microposts do 
    resources :postcomments 

end 


    match '/signup', to: 'users#new' 
    match '/signin', to: 'sessions#new' 
    match '/signout', to: 'sessions#destroy', via: :delete 

    match '/post', to: 'static_pages#post' 
    match '/about', to: 'static_pages#about' 
    match '/contact', to: 'static_pages#contact' 
    match '/users/:username/:id', to: 'microposts#show', via: :get, as: :user_micropost 
end 

Answer 1

您應該添加一個新的路由到您的routes.rb文件類似如下：

match '/users/:username/:id', to 'microposts#show', via: :get, as: :user_micropost 

，並在頁面上顯示用戶的微博，添加鏈接爲：

<a href="<%= user_micropost_path(username: @user.username, id: micropost.id) %>">Whatever..</a> 

在微柱控制器，添加方法顯示：

def show 
    @user = User.find_by_username(params[:username]) 
    @post = Post.find_by_id(params[:id]) 
    # handle any errors from the code above 
end 

，並創造條件，

app/views/microposts/show.html.erb 

新頁面將顯示在微柱。

Answer 2

我在你的路由猜你有提到這樣的事情

resources :users do 
    resources :microposts 
end 

在這種情況下，你可以在你的/views/users/show.html.erb創建鏈接，這樣的事情

<% @microposts.each do |post| 
    <%= link_to truncate(post.content, :length => 10, :separator => '...'), user_micropost_path(@user, post) %> 
<% end %>