Ruby on rails 4 ActiveRecord:：FavoritesController#create中的UnknownAttributeError

我正在获取收藏夹的未知属性“post”。当我在表中缺少一列时，通常会发生此错误。错误指出这部分是问题所在：favorite=current_user.favorites.build（post:post）。但不应该有另一个专栏叫post。我是否有另一套我丢失的嵌套参数，可能是在某些东西下面分层的？还是我的引用完整性不正确

错误屏幕截图

收藏夹\u controller.rb文件

class FavoritesController < ApplicationController

  def create
   post = Post.find(params[:post_id])
   favorite = current_user.favorites.build(post: post)

     if favorite.save
       flash[:notice] = "This post is now favorited."
       redirect_to [post.topic, post]
    else
      flash[:error] = "There was an error favoriting you post.  Please try again."
      redirect_to [post.topic, post]
    end
    end



   end

rake routes | grep -i favorites
      post_favorites POST   /posts/:post_id/favorites(.:format)                  favorites#create
       post_favorite DELETE /posts/:post_id/favorites/:id(.:format)              favorites#destroy

岗位控制员

class Post < ActiveRecord::Base
  has_many :comments, dependent: :destroy
  has_many :votes
  has_one :summary
  belongs_to :user #means the post table has the user table's primary k ey in it
  belongs_to :topic
  has_many :favorites

#has_one :summary
mount_uploader :avatar, AvatarUploader
#default_scope {order('created_at DESC')}
default_scope {order('rank DESC')}

  validates :title, length: {minimum: 5},  presence: true
  validates :body,  length: {minimum: 20}, presence: true
  validates :topic, presence: true
  validates :user, presence: true



 def create_vote
 # self == post
   user.votes.create(value: 1, post: self)
 end


 def markdown_title
   (render_as_markdown).render(self.title).html_safe
 end


 def markdown_body
  (render_as_markdown).render(self.body).html_safe
 end

 def up_votes
  votes.where(value: 1).count
 end

 def down_votes
  votes.where(value: -1).count
 end

 def points
  votes.pluck(:value).sum
 end

 def update_rank
  age_in_days = (created_at - Time.new(1970,1,1)) / (60 * 60 * 24) #1      day in seconds
  new_rank = points + age_in_days

update_attribute(:rank, new_rank)
 end

private

 def render_as_markdown
  renderer = Redcarpet::Render::HTML.new
  extensions = {fenced_code_blocks: true}
  redcarpet = Redcarpet::Markdown.new(renderer, extensions)
  return redcarpet
 end
end

收藏路线

class FavoritesController < ApplicationController

  def create
   post = Post.find(params[:post_id])
   favorite = current_user.favorites.build(post: post)

     if favorite.save
       flash[:notice] = "This post is now favorited."
       redirect_to [post.topic, post]
    else
      flash[:error] = "There was an error favoriting you post.  Please try again."
      redirect_to [post.topic, post]
    end
    end



   end

rake routes | grep -i favorites
      post_favorites POST   /posts/:post_id/favorites(.:format)                  favorites#create
       post_favorite DELETE /posts/:post_id/favorites/:id(.:format)              favorites#destroy

这条线

favorite = current_user.favorites.build(post: post)

应该是

favorite = current_user.favorites.build(post_id: post.id)

---

因为您的收藏夹表中有

post\u id

而不是

post

请发布错误。请尝试将

favorite=current\u user.favorites.build（post:post）

更改为

favorite=current\u user.favorites.build（post\u id:post.id）

是的，我之前尝试过，但没有成功。我得到一个错误：未定义的局部变量或方法“post\u id”用于#它必须是我正在寻找的小东西…这实际上应该可以工作

favorite=current\u user.favorites.build（post\u id:post.id）

。你仔细检查了吗？