ruby-on-rails – 没有这样的列：以下多对多关联中的书签

我有一个帖子和一个用户模型.我正在尝试添加书签模式,以便用户可以为帖子添加书签.我正在使用连接模型：

schema.rb：

create_table "bookmarks",:force => true do |t|
  t.integer  "bookmarker_id"
  t.integer  "bookmarked_id"
  t.datetime "created_at",:null => false
  t.datetime "updated_at",:null => false
end

bookmark.rb：

class Bookmark < ActiveRecord::Base
  attr_accessible :bookmarked_id

  belongs_to :bookmarker,class_name: "User"
  belongs_to :bookmarked,class_name: "Post"

  validates :bookmarker_id,presence: true
  validates :bookmarked_id,presence: true
end

post.rb：

has_many :bookmarks,:dependent => :destroy
has_many :bookmarkers,:through => :bookmarks

user.rb：

has_many :bookmarks,:dependent => :destroy
has_many :bookmarked_posts,:through => :bookmarks,source: :bookmarked

我试着测试终端中的关联,但我明白了：

1.9.3-p0 :007 > user.bookmarks
  Bookmark Load (0.4ms)  SELECT "bookmarks".* FROM "bookmarks" WHERE "bookmarks"."user_id" = 1
ActiveRecord::StatementInvalid: sqlite3::sqlException: no such column: bookmarks.user_id: SELECT "bookmarks".* FROM "bookmarks"  WHERE "bookmarks"."user_id" = 1

可能是什么问题呢？

解决方法

你没有指定foreign_key,异常清楚地说

no such column: bookmarks.user_id

加上

has_many :bookmarks,:foreign_key => 'bookmarker_id'