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我对 ruby​​ 完全陌生，但我知道如何创建数据库。我做了这个

rails generate scaffold MYTABLENAME

在 db/migrate 我编辑了文件，所以它有我的列等。

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :username
      t.string :password
      t.string :email
      t.timestamps
    end
  end
end

这是正确的吧？

现在我得到了这个输出：

  invoke  active_record
  create    db/migrate/20130325134909_create_posts.rb
  create    app/models/post.rb
  invoke    test_unit
  create      test/unit/post_test.rb
  create      test/fixtures/posts.yml
  invoke  resource_route
   route    resources :posts
  invoke  scaffold_controller
  create    app/controllers/posts_controller.rb
  invoke    erb
  create      app/views/posts
  create      app/views/posts/index.html.erb
  create      app/views/posts/edit.html.erb
  create      app/views/posts/show.html.erb
  create      app/views/posts/new.html.erb
  create      app/views/posts/_form.html.erb
  invoke    test_unit
  create      test/functional/posts_controller_test.rb
  invoke    helper
  create      app/helpers/posts_helper.rb
  invoke      test_unit
  create        test/unit/helpers/posts_helper_test.rb
  invoke  assets
  invoke    coffee
  create      app/assets/javascripts/posts.js.coffee
  invoke    scss
  create      app/assets/stylesheets/posts.css.scss
  invoke  scss
  create    app/assets/stylesheets/scaffolds.css.scss
   invoke  active_record
  create    db/migrate/20130325134909_create_posts.rb
  create    app/models/post.rb
  invoke    test_unit
  create      test/unit/post_test.rb
  create      test/fixtures/posts.yml
  invoke  resource_route
   route    resources :posts
  invoke  scaffold_controller
  create    app/controllers/posts_controller.rb
  invoke    erb
  create      app/views/posts
  create      app/views/posts/index.html.erb
  create      app/views/posts/edit.html.erb
  create      app/views/posts/show.html.erb
  create      app/views/posts/new.html.erb
  create      app/views/posts/_form.html.erb
  invoke    test_unit
  create      test/functional/posts_controller_test.rb
  invoke    helper
  create      app/helpers/posts_helper.rb
  invoke      test_unit
  create        test/unit/helpers/posts_helper_test.rb
  invoke  assets
  invoke    coffee
  create      app/assets/javascripts/posts.js.coffee
  invoke    scss
  create      app/assets/stylesheets/posts.css.scss
  invoke  scss
  create    app/assets/stylesheets/scaffolds.css.scss

听起来也不错。但是为什么会自动插入 

  app/views/posts/index.html.erb
  app/views/posts/edit.html.erb
  app/views/posts/show.html.erb
  app/views/posts/new.html.erb
  app/views/posts/_form.html.erb

等等？它是标准的，如果是的话 - 为什么？请解释。

另一个问题是：在我的家庭控制器（作为标准../home/index）中，我试图在我的新数据库中创建一个用户，但它告诉我未初始化的常量 HomeController::Users - 为什么？

这是我的代码：

 class HomeController < ApplicationController
     def index
      #@users = User.all
        o = Users.new
        o.username = "Jesper"
        o.save
     end
 end
4

2 回答 2

1

如果您只想生成一个模型，您应该这样做：

rails generate model MYTABLENAME username:string password:string email:string

脚手架生成从模型到视图的所有内容（使用默认的 CRUD 操作）。您应该阅读http://guides.rubyonrails.org/getting_started.html。本指南将涵盖所有基础知识。

于 2013-03-25T14:21:10.100 回答
-1

型号名称必须是单数

class HomeController < ApplicationController

     def index
      #@users = User.all
        o = User.new
        o.username = "Jesper"
        o.save
     end
 end

用户而不是用户

于 2013-03-25T14:25:29.887 回答