在 Ruby on Rails 中销毁关联模型中的条目

问：

如果这是一个简单的问题，我很抱歉，我对轨道没有太多经验。我有一个用户 Cow 模型，它与 User 有属于的关系。我可以对用户执行 CRUD 操作没有问题。我可以对 Cow 模型进行创建和读取操作。我不知道该怎么做的是删除操作。我试图在解决方案中实现，但不断从 axios 中得到 500 个错误。

My routes seem to be ok 

                                root GET    /                                                                                                 users#index
                           user_cows GET    /users/:user_id/cows(.:format)                                                                    cows#index
                                     POST   /users/:user_id/cows(.:format)                                                                    cows#create
                        new_user_cow GET    /users/:user_id/cows/new(.:format)                                                                cows#new
                       edit_user_cow GET    /users/:user_id/cows/:id/edit(.:format)                                                           cows#edit
                            user_cow GET    /users/:user_id/cows/:id(.:format)                                                                cows#show
                                     PATCH  /users/:user_id/cows/:id(.:format)                                                                cows#update
                                     PUT    /users/:user_id/cows/:id(.:format)                                                                cows#update
                                     DELETE /users/:user_id/cows/:id(.:format)                                                                cows#destroy
                               users GET    /users(.:format)                                                                                  users#index
                                     POST   /users(.:format)                                                                                  users#create
                            new_user GET    /users/new(.:format)                                                                              users#new
                           edit_user GET    /users/:id/edit(.:format)                                                                         users#edit
                                user GET    /users/:id(.:format)                                                                              users#show
                                     PATCH  /users/:id(.:format)                                                                              users#update
                                     PUT    /users/:id(.:format)                                                                              users#update
                                     DELETE /users/:id(.:format)                             ```

这是我尝试在控制器中实现的功能

class CowsController < ApplicationController
  before_action :set_user, only: %i[ show edit update destroy ]
  protect_from_forgery with: :exception, unless: -> {request.format.json?}
  
    def create
        @user = User.find(params[:user_id])
        @cow = @user.cows.create(cow_params)
        redirect_to user_path(@user)
      end
    
 #without this we get a 404. With it we get a 500, that's progress
    def destroy
      @user = User.find(params[:user_id])
      @cow = @user.cows.find(params[:id])

      @cow.destroy

    end
    
      private
        def cow_params
          params.require(:cow).permit(:tag, :dob, :sex, :breed, :dam, :docility, :agression, :fertility, :calving, :milk, :calf)
        end
    end

我的前端的请求如下。

 async function deleteItem(e) {
    e.preventDefault();

    let response = await axios.delete(`http://localhost:3000/tickets/${props.id}`, { headers: { Accept: "application/json" } })
    window.location.reload();
}