Question

When I am on the index page and click on the delete link to destroy the post i get that error:

Unknown action

No action responded to delete. Actions: add, edit, and index

我不理解为什么删除打字工作。这是我的控制车——控制器。

def delete
    @car = Car.find(params[:id])
    flash[:notice] = "Question #{@car.name} deleted!"
    @car.destroy
    redirect_to :controller => :car, :action => :index
  end

map.connect  :controller/:action/:id 
  map.connect  :controller/:action/:id.:format 
  map.root :controller => "main"
  map.root :controller => "car"
end

Answer 1

删除行动是否实际销毁?

If you look at a controller that was generated as part of scaffold, you should see what the delete action maps to...

Rails provides the 7 classical RESTful actions out of the box when you generate the controller and each one has the actual URL + method commented above the action method...

# DELETE /subject_families/1
# DELETE /subject_families/1.xml
def destroy
  ...
end

I hope this helps...

Answer 2

Make sure your request is using the correct HTTP verb. Rails default for REST resources is to use HTTP DELETE on the destroy action. Are you using GET (a simple link) or POST instead of DELETE?

我建议检查你的路线——运行<条码>铁路线——以确认铁路的预期。如果你利用铁路资源产生器,那么我就期望你的观察模板包含这样的内容:

<%= form_for @car, :html => { :method => :delete } do |f| %>
  <%= submit_tag  Delete Car  %>
<% end %>

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