ruby-on-rails - ActiveRecord::UnknownAttributeError(未知属性:作者姓名):

Question

我的 heroku-server 出现了一些问题。在本地没有遇到这个问题:

2014-07-23T16:59:23.249055+00:00 app[web.1]: ActiveRecord::UnknownAttributeError (unknown attribute: authorname):
2014-07-23T16:59:23.249058+00:00 app[web.1]:   app/controllers/chapters_controller.rb:5:in `create'

我的 Controller :

class ChaptersController < ApplicationController

    def create
        @story = Story.find(params[:story_id])
        @chapter = @story.chapters.create(chapter_params)
        redirect_to story_path(@story)
    end

    def destroy
        @story = Story.find(params[:story_id])
        @chapter = @story.chapters.find(params[:id])
        @chapter.destroy
        redirect_to story_path(@story)
    end

    def upvote
        @chapter = Chapter.find(params[:id])
        @chapter.votes.create
        redirect_to(:back)
    end

    private
        def chapter_params
            params.require(:chapter).permit(:round, :author, :authorname, :body)
        end
end

我刚刚添加了作者姓名

rails g migration add_authorname_to_chapter authorname:string

我错过了什么？

编辑，添加模式信息:ActiveRecord::Schema.define(version: 20140723154333) 做

  create_table "chapters", force: true do |t|
    t.string   "round"
    t.string   "author"
    t.text     "body"
    t.integer  "story_id"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "authorname"
  end

Answer 1

迁移后重新启动服务器将刷新架构缓存。