Question

SQLite3 :: SQLException：没有这样的专栏：reviews.restaurant_id：SELECT＆＃34; reviews＆＃34;。* FROM＆＃34; reviews＆＃34;在哪里＆＃34;评论＆＃34;。＆＃34; restaurant_id＆＃34; =？提取的来源（第91行）：

def prepare sql
  stmt = SQLite3::Statement.new( self, sql )
  return stmt unless block_given?

  begin

class Review < ApplicationRecord
  belongs_to :user
  belongs_to :restaurant
end

class Restaurant < ApplicationRecord
  has_many :reviews
  has_many :users, through: :reviews
end

class User < ApplicationRecord
  has_many :reviews
  has_many :restaurants, through: :reviews
end

ActiveRecord::Schema.define(version: 20170420034712) do

  create_table "restaurants", force: :cascade do |t|
    t.string   "logo"
    t.string   "name"
    t.text     "description"
    t.string   "address1"
    t.string   "address2"
    t.string   "city"
    t.string   "state"
    t.string   "zipcode"
    t.string   "phone"
    t.integer  "cost"
    t.integer  "rating"
    t.string   "menu"
    t.datetime "created_at",  null: false
    t.datetime "updated_at",  null: false
  end

  create_table "reviews", force: :cascade do |t|
    t.text     "comment"
    t.integer  "rating"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

  create_table "users", force: :cascade do |t|
    t.string   "first_name"
    t.string   "last_name"
    t.integer  "num_visits"
    t.integer  "num_searches"
    t.integer  "num_called"
    t.datetime "created_at",   null: false
    t.datetime "updated_at",   null: false
  end

end

所以我使用Rails管理员我可以将项目添加到数据库但是我无法删除它们或通过Rails管理员编辑它们。我想知道我是否遗漏了一些简单的东西。我认为我可以在创建后删除或编辑用户或餐馆。我不太了解错误，也无法找到相关文档。任何帮助将不胜感激。

Rails管理员 - 无法编辑或删除数据库中的项目

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