创建带有脚手架的项目在创建后不显示属性 - Rails/Devise

Question

我对 Rails 比较陌生。我正在尝试创建一个应用程序，允许用户创建视频游戏项目并将它们存储在他们自己的用户名下。我正在使用最新版本的 Rails 和 Devise。

使用脚手架作为基础，我在我的应用程序中创建了视频游戏 model/controller。将视频游戏模型链接到创建它们的用户后，似乎在创建表单中输入的任何属性都没有保存，或者至少没有显示在 videogames/index 页面上。在尝试搜索 Google 和 Whosebug 后，我找不到任何类似的 questions/guides 可以使用。

关于如何解决这个问题有什么想法吗？对 Rails 新手的任何帮助将不胜感激。

下面我发布了所有可能相关的文件。如果还需要什么，请告诉我。要查看整个项目，请参阅 http://github.com/bmmart2/collection-manager

Image after item creation

Index page of two created items

这是我的控制器：

class VideogamesController < ApplicationController
  before_action :set_videogame, only: [:show, :edit, :update, :destroy]

  # GET /videogames
  # GET /videogames.json
  def index

    if user_signed_in?
        @videogame = current_user.videogames.all
    else
        redirect_to :root
    end
  end

  # GET /videogames/1
  # GET /videogames/1.json
  def show
  end

  # GET /videogames/new
  def new
    @videogame = current_user.videogames.new
  end

  # GET /videogames/1/edit
  def edit
  end

  # POST /videogames
  # POST /videogames.json
  def create
      @videogame = current_user.videogames.create(videogame_params)
    respond_to do |format|
      if @videogame.save
        format.html { redirect_to @videogame, notice: 'Videogame was successfully created.' }
        format.json { render :show, status: :created, location: @videogame }
      else
        format.html { render :new }
        format.json { render json: @videogame.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /videogames/1
  # PATCH/PUT /videogames/1.json
  def update
    respond_to do |format|
      if @videogame.update(videogame_params)
        format.html { redirect_to @videogame, notice: 'Videogame was successfully updated.' }
        format.json { render :show, status: :ok, location: @videogame }
      else
        format.html { render :edit }
        format.json { render json: @videogame.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /videogames/1
  # DELETE /videogames/1.json
  def destroy
    @videogame.destroy
    respond_to do |format|
      format.html { redirect_to videogames_url, notice: 'Videogame was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_videogame
      @videogame = Videogame.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def videogame_params
      params.require(:videogame).permit(:title, :publisher, :platform, :year, :condition, :upc)
    end
end

电子游戏模型：

class Videogame < ApplicationRecord

belongs_to :user

attr_accessor :title, :platform, :upc, :condition, :publisher, :year

end

视频游戏数据库迁移文件：

class CreateVideogames < ActiveRecord::Migration[5.2]
  def change
    create_table :videogames do |t|
      t.string :title
      t.string :publisher
      t.integer :condition
      t.string :platform
      t.string :year
      t.string :upc
      t.timestamps
    end
    add_index :videogames, :user_id
  end
end

add_user_refs_to_videogame 迁移：

class AddUserRefsToVideogame < ActiveRecord::Migration[5.2]
  def change
    add_reference :videogames, :user, foreign_key: true
  end
end

编辑：显示视频游戏视图

<p id="notice"><%= notice %></p>

<p>
  <strong>Title:</strong>
  <%= @videogame.title %>
</p>

<p>
  <strong>Publisher:</strong>
  <%= @videogame.publisher %>
</p>

<p>
  <strong>Platform:</strong>
  <%= @videogame.platform %>
</p>

<p>
  <strong>Year:</strong>
  <%= @videogame.year %>
</p>

<p>
  <strong>Condition:</strong>
  <%= @videogame.condition %>
</p>

<p>
  <strong>Upc:</strong>
  <%= @videogame.upc %>
</p>

<%= link_to 'Edit', edit_videogame_path(@videogame) %> |
<%= link_to 'Back', videogames_path %>

Answer 1

我认为您的 videogame.rb 文件中的 attr_accessor 行导致了问题。尝试删除它，看看是否能解决问题。

创建带有脚手架的项目在创建后不显示属性 - Rails/Devise

Creating items with scaffolding not showing attributes after creation - Rails/Devise

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