Question

我试图在我的Rails应用程序中创建一个简单的搜索表单。我在表单的url路径中出错：

<%= form_tag(med_search, :method => "get", id: "search-form") do %>
            <%= text_field_tag :search, params[:search], placeholder: "Search", class: "form-control" %>
            <%= button_to "Search", class: "btn btn-default" %>
          <% end %>

上面的第一行会导致错误undefined local variable or method med_search＆＃39;对于＃＆lt;＃：0x007fab2b5afa90＆gt;`

问题很可能是我的路线设置。我创建了一个名为search的新控制器操作，因此我编辑了routes.db，如下所示：

resources :meds do
  collection do
    get 'search' => 'meds#search'
  end
end
  devise_for :users
  #get 'meds/index'
  root to: "meds#index"
  resources :meds, :path => ''
end

当我做rake路线时，我看到路径med搜索，所以我知道网址是有效的：

                  Prefix Verb   URI Pattern                    Controller#Action
              med_search GET    /meds/:med_id/search(.:format) meds#search
                    meds GET    /meds(.:format)                meds#index
                         POST   /meds(.:format)                meds#create
                 new_med GET    /meds/new(.:format)            meds#new
                edit_med GET    /meds/:id/edit(.:format)       meds#edit
                     med GET    /meds/:id(.:format)            meds#show
                         PATCH  /meds/:id(.:format)            meds#update
                         PUT    /meds/:id(.:format)            meds#update
                         DELETE /meds/:id(.:format)            meds#destroy
        new_user_session GET    /users/sign_in(.:format)       devise/sessions#new
            user_session POST   /users/sign_in(.:format)       devise/sessions#create
    destroy_user_session DELETE /users/sign_out(.:format)      devise/sessions#destroy
           user_password POST   /users/password(.:format)      devise/passwords#create
       new_user_password GET    /users/password/new(.:format)  devise/passwords#new
      edit_user_password GET    /users/password/edit(.:format) devise/passwords#edit
                         PATCH  /users/password(.:format)      devise/passwords#update
                         PUT    /users/password(.:format)      devise/passwords#update
cancel_user_registration GET    /users/cancel(.:format)        devise/registrations#cancel
       user_registration POST   /users(.:format)               devise/registrations#create
   new_user_registration GET    /users/sign_up(.:format)       devise/registrations#new
  edit_user_registration GET    /users/edit(.:format)          devise/registrations#edit
                         PATCH  /users(.:format)               devise/registrations#update
                         PUT    /users(.:format)               devise/registrations#update
                         DELETE /users(.:format)               devise/registrations#destroy
                    root GET    /                              meds#index
                         GET    /                              meds#index
                         POST   /                              meds#create
                         GET    /new(.:format)                 meds#new
                         GET    /:id/edit(.:format)            meds#edit
                         GET    /:id(.:format)                 meds#show
                         PATCH  /:id(.:format)                 meds#update
                         PUT    /:id(.:format)                 meds#update
                         DELETE /:id(.:format)                 meds#destroy

我应该在修复此问题的路线中更改哪些内容？

谢谢！

编辑：将网址更改为med_search_path，收到新错误：No route matches {:action=>"search", :controller=>"meds"} missing required keys: [:med_id]。看起来它与路线/meds/:med_id/search(.:format)

有关

Answer 1

1）您需要像这样更改form_tag

 <%= form_tag(search_meds_path, :method => "get", id: "search-form") do %>

2）您需要将路线从member更改为此类收藏

resources :meds do
  collection do
    get 'search' => 'meds#search'
  end
end

3）不确定为什么需要再次在底部添加resources :meds, :path => ''。如果您不需要它，最好删除。

Answer 2

看起来您正在尝试对搜索进行编码，但由于您将其放在资源块中，因此Rails假设您正在讨论特定的med。

从资源块中删除路线并将其更改为get 'meds/search' => 'meds#search'。这将允许您将其用作常规端点，而Rails不会抱怨您需要ID。

未定义的局部变量或带有form_tag的方法

2 个答案: