Question

我有一个带虚荣网址的应用程序，我一直在努力让用户更新属性。编辑表单正确加载，但在提交表单后，rails重新路由到root，而不是运行更新方法。不确定为什么会发生这种情况......

# users_controller
  def edit 
    @user = User.find(params[:id]) 
  end

  def to_param  # overridden
     username.parameterize
  end

  def update 
      @user = User.find(params[:id]) 
      if @user.update_attributes(params[:user]) 
         redirect_to user_url(current_user.username), :flash => { :success => "success" }
      else
        redirect_to user_url(current_user.username), :error => { :error => "shit" }
      end
   end

路由

resources :users do
     resources :friends
   end

  match '/:username' => 'users#show', :as => "user"

形式

<%= form_for @user do |form| %>  
<%= render 'shared/error_messages', :object => form.object %>
 <div class="form">  
    <p> <%= form.label :description, "Message to friends" %>  <br />  
     <%= form.text_area :description %> </p> 

     <%= form.submit %>  
 </div>  
 <% end %>

开发日志

Started GET "/users/1/edit" for 127.0.0.1 at Wed Jan 05 19:07:28 -0500 2011
  Processing by UsersController#edit as HTML
  Parameters: {"id"=>"1"}
  User Load (0.2ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
Rendered shared/_error_messages.html.erb (0.6ms)
ApplicationController::current_user
ApplicationController::current_user_session
  CACHE (0.0ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
  CACHE (0.0ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
ApplicationController::current_user_session
ApplicationController::current_user
ApplicationController::current_user
Rendered users/edit.html.erb within layouts/application (27.6ms)
Completed 200 OK in 53ms (Views: 38.7ms | ActiveRecord: 0.3ms)


    Started POST "/1" for 127.0.0.1 at Wed Jan 05 19:08:06 -0500 2011
      Processing by UsersController#show as HTML
      Parameters: {"commit"=>"Update User", "authenticity_token"=>"OM1lIzizuFCYlxC3XmtmG/btqAsyjekHtqsiwlUDn3M=", "utf8"=>"✓", "username"=>"1", "user"=>{"description"=>"Hello people! Give me your address. Get a postcard."}}
      User Load (0.2ms)  SELECT "users".* FROM "users" WHERE ("users"."username" = '1') LIMIT 1
    Redirected to http://0.0.0.0:3000/
    ApplicationController::current_user
    ApplicationController::current_user_session
      User Load (0.3ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
      CACHE (0.0ms)  SELECT "users".* FROM "users" WHERE ("users"."id" = 1) LIMIT 1
    ApplicationController::current_user_session
    Completed 302 Found in 102ms

相关的佣金路线：

 users GET    /users(.:format)                             {:controller=>"users", :action=>"index"}
                                 POST   /users(.:format)                             {:controller=>"users", :action=>"create"}
                        new_user GET    /users/new(.:format)                         {:controller=>"users", :action=>"new"}
                       edit_user GET    /users/:id/edit(.:format)                    {:controller=>"users", :action=>"edit"}
                            user GET    /users/:id(.:format)                         {:controller=>"users", :action=>"show"}
                                 PUT    /users/:id(.:format)                         {:controller=>"users", :action=>"update"}
                                 DELETE /users/:id(.:format)                         {:controller=>"users", :action=>"destroy"}

Answer 1

@Beerlington。你的答案非常接近，导致我找到了解决办法。定义方法并不是这样做，而是定义了操作。

<%= form_for @user, :url => { :action => "update" } do |form| %>

由于某种原因，这就成功了......不确定为什么行动没有被定义为更新。

Answer 2

查看表单生成的HTML。我打赌这个动作看起来像

action="/1"

因此，在提交表单时，您的路径文件会显示

match '/:username' => 'users#show', :as => "user"

这就是你被发送的地方

Started POST "/1" for 127.0.0.1 at Wed Jan 05 19:08:06 -0500 2011
  Processing by UsersController#show as HTML

我认为form_for依赖于to_param来为表单生成操作。因为你写了它，你就会出现意想不到的行为。

Answer 3

您的代码对我来说很好，但是日志显示表单没有呈现包含“put”的隐藏_method字段。这可能是由form_for帮助程序未将@user识别为现有记录引起的。我不知道为什么会发生这种情况，但临时解决方法是将以下内容添加到您的form_for帮助程序中：

:html => { :method => :put}

编辑表单路由 - 在更新提交时运行#show方法而不是#update

3 个答案: