Question

我最初在Routing Errors on attempts to delete all records in a table using Rails 4 through a link_to发布了路由错误，并且已经解决了。

现在我遇到了传递“id = remove_all”的问题。我正在使用Rails 4，并尝试使用link_to帮助程序删除所有评估。相关代码如下：

的routes.rb

   resources :assessments do
     collection do
       delete :remove_all
     end
   end

评估index.html.erb

 <p>To delete all assessments in one swoop, click <%= link_to 'Remove ALL Assessments', remove_all_assessments_path, method: :destroy, data: { confirm: 'Are you sure?' } %>

assessments_controller.rb

  def remove_all
    @assessments = Assessment.all
    @assessments.each do |assessment|
        assessment.destroy(assessment.id)
     end
    flash[:notice] = "All assessments have been deleted."
    redirect_to assessments_url
  end

我运行rake路线和

Prefix                 Verb   URI Pattern                       Controller#Action
remove_all_assessments DELETE /assessments/remove_all(.:format) assessments#remove_all

为链接生成的HTML源代码：

<p>To delete all assessments in one swoop, click <a data-confirm="Are you sure?" data-method="destroy" href="/assessments/remove_all" rel="nofollow">Remove ALL Assessments</a>

当我点击“删除所有评估”链接时，我希望在AssessmentsController中运行remove_all操作，并删除@assessments中的所有评估，然后将我重定向到assessment_url。但是，当我点击“删除所有评估”链接时，我会被带到网址：http://localhost:3000/assessments/remove_all

ActiveRecord::RecordNotFound in AssessmentsController#destroy
Couldn't find Assessment with id=remove_all

# Use callbacks to share common setup or constraints between actions.
def set_assessment
@assessment = Assessment.find(params[:id])
end

日志显示：

Started DELETE "/assessments/remove_all" for 127.0.0.1 at 2014-01-31 15:41:41 -0500
Processing by AssessmentsController#destroy as HTML
 Parameters: {"authenticity_token"=>"fooBarBaz=", "id"=>"remove_all"}

如何使用Delete动词将@assessments的集合传递给remove_all操作？这可能吗？

Answer 1

是因为

resources :assessments

已经有破坏的路线比如/assessment/:id with method :delete

所以你的remove_all_assessments_path会在你的routes.rb文件中找到它的第一个url bcoz

要解决您的问题，您必须执行以下操作： -

resources :assessments, except: [:destroy] do
 collection do
   delete :remove_all
 end 
end

或在其上方定义您的remove_all_assessments网址。

像

 match "/assessments/remove_all", to: "assessments#remove_all", via: [:delete], as: :remove_all_assessments
 resources :assessments do
 collection do
   delete :remove_all
 end 
end

无法通过link_to删除Rails 4中的所有记录

1 个答案: