Rails:无法销毁帖子 [英] Rails: unable to destroy post

问题描述

我正在构建基于 Ruby on Rails 的论坛应用程序.我在 Post Controller 中销毁操作有问题.我的帖子控制器:

I'm building forum app based on Ruby on Rails. I have problem with destroy action in Post Controller. My Posts Controller:

class PostsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_topic, only: :create

  def new
    @post = @topic.posts.new
  end

  def create
    @post = @topic.posts.new(post_params)
    @post.user = current_user

    if @post.save
      flash[:notice] = 'Post created successfully!'
      redirect_to(:back)
    else
      render 'shared/_post_form'
    end
  end

  def destroy
    @post = Post.find(params[:id])
    @post.destroy
    redirect_to(:back)
    flash[:error] = "Post was destroyed!"
  end

  private

  def set_topic
    @topic = Topic.find(params[:topic_id])
  end

  def post_params
    params.require(:post).permit(:content)
  end
end

这是我的路线:

  resources :contact_forms, only: [:new, :create]
  match '/contact', to: 'contact_forms#new',    via: 'get'
  root 'static_pages#home'

  resources :forums, only: [:index, :show] do
    resources :topics, except: :index
  end

  resources :topics, except: :index do 
    resources :posts
  end

  devise_for :users
  resources :users, only: :show

我转到主题显示操作，我有删除帖子的链接:

I go to topic show action and i have link to delete post:

= link_to "Delete", topic_post_path(post.topic.forum.id, post.topic.id), method: :delete, data: {confirm: "You sure?"}, class: 'label alert

当我点击它时，我有以下错误:

When i click it i have following error:

ActiveRecord::RecordNotFound in PostsController#destroy 
Couldn't find Post with id=46

有什么想法吗?

推荐答案

您没有通过 post.id 来销毁链接.试试看:

You are not passing post.id to destroy link. Try out:

= link_to "Delete", topic_post_path(post.topic.id, post.id), method: :delete, data: {confirm: "You sure?"}, class: 'label alert'

UPD:有一个更短的方法来完成这个:

UPD: there is a shorter way to accomplish this:

= link_to "Delete", [post.topic.id, post.id], method: :delete, data: {confirm: "You sure?"}, class: 'label alert'

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