ActionController :: UrlGenerationError ...缺少必需的鍵：[：id]

Question

我已閱讀以前有關此錯誤的問題的答案，但似乎無法使其適應當前情況。

我通過TUTS + Riding Ruby on Rails課程的國際化部分工作（比較我的代碼在course repo什麼的），並進行演練，我不得不默認區域設置更改爲葡萄牙（PT），並更改路線，以便我的問題和項目資源由語言環境（例如localhost3000/pt/issues/14）作爲前綴，在我的路線文件中，範圍在/:locale之下。

似乎由於某種原因ID密鑰正在被區域設置哈希取代。當我提交新問題時，出現以下錯誤：

ActionController::UrlGenerationError in Issues#show 
Showing /Users/andrekibbe/code/new_issues/app/views/issues/show.html.erb where line #19 raised: 
No route matches {:action=>"show", :controller=>"projects", :id=>nil, :locale=>#<Project id: 1, name: "First project", description: "A little description", created_at: "2015-06-20 15:34:58", updated_at: "2015-06-20 15:34:58">} missing required keys: [:id] 

我在做什麼錯？我有正確的路徑名嗎？

提取的源（圍繞線＃19）：

問題/ show.html.erb

<p id="notice"><%= notice %></p> 

<p> 
    <strong>Title:</strong> 
    <%= @issue.title %> 
</p> 

<p> 
    <strong>Description:</strong> 
    <%= @issue.description %> 
</p> 

<p> 
    <strong>No followers:</strong> 
    <%= @issue.no_followers %> 
</p> 

<p><b>Project: </b> 
<%= link_to @issue.project.name, @issue.project %></p> 

<%= link_to 'Edit', edit_issue_path(@issue) %> | 
<%= link_to 'Back', issues_path %> 

這裏有問題的create行動和項目控制器：

issues_controller.rb

def create 
    @issue = Issue.new(issue_params) 

    respond_to do |format| 
    if @issue.save 
     format.html { redirect_to @issue, notice: t('issues.created') } 
     format.json { render :show, status: :created, location: @issue } 
    else 
     format.html { render :new } 
     format.json { render json: @issue.errors, status: :unprocessable_entity } 
    end 
    end 
end 

projects_controller.rb

def create 
    @project = Project.new(project_params) 

    respond_to do |format| 
    if @project.save 
     format.html { redirect_to @project, notice: 'Project was successfully created.' } 
     format.json { render :show, status: :created, location: @project } 
    else 
     format.html { render :new } 
     format.json { render json: @project.errors, status: :unprocessable_entity } 
    end 
    end 
end 

我的問題控制器的顯示方法，要求通過@Pavan，是Rails默認。這裏看不到太多。

issues_controller.rb

def show 
end 

我的路線：

的routes.rb

Rails.application.routes.draw do 
    scope "/:locale" do 
    get 'timeline/index' 

    resources :projects 
    resources :issues 
    end 
end 

耙路線

timeline_index GET /:locale/timeline/index(.:format) timeline#index 
     projects GET /:locale/projects(.:format)   projects#index 
       POST /:locale/projects(.:format)   projects#create 
    new_project GET /:locale/projects/new(.:format)  projects#new 
    edit_project GET /:locale/projects/:id/edit(.:format) projects#edit 
     project GET /:locale/projects/:id(.:format)  projects#show 
       PATCH /:locale/projects/:id(.:format)  projects#update 
       PUT /:locale/projects/:id(.:format)  projects#update 
       DELETE /:locale/projects/:id(.:format)  projects#destroy 
     issues GET /:locale/issues(.:format)   issues#index 
       POST /:locale/issues(.:format)   issues#create 
    new_issue GET /:locale/issues/new(.:format)  issues#new 
    edit_issue GET /:locale/issues/:id/edit(.:format) issues#edit 
     issue GET /:locale/issues/:id(.:format)  issues#show 
       PATCH /:locale/issues/:id(.:format)  issues#update 
       PUT /:locale/issues/:id(.:format)  issues#update 
       DELETE /:locale/issues/:id(.:format)  issues#destroy 

我改變了路徑那些@nathanvda建議，但建議從內部Rails框架代碼本身產生以下錯誤消息：

NoMethodError in IssuesController#index 
undefined method `set_locale' for #<IssuesController:0x007fd2f9fc2460> 
Extracted source (around line #432): 

case filter 
    when Symbol 
     lambda { |target, _, &blk| target.send filter, &blk } 
    when String 
     l = eval "lambda { |value| #{filter} }" 
     lambda { |target, value| target.instance_exec(value, &l) } 

Answer 1

既然你作用域的語言環境下的一切，軌道路線傭工假設第一個助手是語言環境。

如果你寫你的鏈接如下，你應該是不錯的：

link_to @issue.project.name, [I18n.locale, @issue.project] 

但這似乎有點乏味。更妙的是從I18n guides尖端：語言環境添加到默認網址選項，添加以下方法您ApplicationController：

def default_url_options(options = {}) 
    { locale: I18n.locale }.merge options 
end 

，然後你的鏈接應該是工作，因爲他們是。