Ruby On Rails：从现有数据库创建模型视图和控制器

Question

是否可以从现有数据库创建控制器，模型和视图？

我在Google上找不到命令。

这里我说的是逆向工程

Answer 1

你必须创建为每个表的简单模型关系，然后你可以

[rails3] > rails generate scaffold_controller Club name:string exclusive:boolean 
     create app/controllers/clubs_controller.rb 
     invoke erb 
     create app/views/clubs 
     create app/views/clubs/index.html.erb 
     create app/views/clubs/edit.html.erb 
     create app/views/clubs/show.html.erb 
     create app/views/clubs/new.html.erb 
     create app/views/clubs/_form.html.erb 
     create app/views/layouts/clubs.html.erb 
     invoke test_unit 
     create test/functional/clubs_controller_test.rb 

或者你可以尝试active_admin宝石

ActiveAdmin - https://github.com/gregbell/active_admin

rails generate active_admin:resource [MyModelName] 

RailsAdmin也够https://github.com/sferik/rails_admin

你应该为你的模型指定至少2分的规则，如果它不使用好轨道约定。 例

class Article < ActiveRecord::Base 
    self.table_name "tbl_articles" 
    self.primary_key "art_id" 
end 

Answer 2

那么这是违背原则的。你必须做得越好，如果你想为你的应用程序快速引导，你需要复制数据库中的模型并使用脚手架。 请记住，Rails使用了大量的约定，如果你决定不遵循，你会有很多麻烦。

如果您需要帮助，请检查此guide。

Answer 3

这是你如何能做到这一点 -

尝试：

rails g scaffold myscaffold 

这将生成文件：

invoke active_record 
create db/migrate/20130124100759_create_myscaffolds.rb 
create app/models/myscaffold.rb 
invoke test_unit 
create  test/unit/myscaffold_test.rb 
create  test/fixtures/myscaffolds.yml 
route resources :myscaffolds 
invoke scaffold_controller 
create app/controllers/myscaffolds_controller.rb 
invoke erb 
create  app/views/myscaffolds 
create  app/views/myscaffolds/index.html.erb 
create  app/views/myscaffolds/edit.html.erb 
create  app/views/myscaffolds/show.html.erb 
create  app/views/myscaffolds/new.html.erb 
create  app/views/myscaffolds/_form.html.erb 
invoke test_unit 
create  test/functional/myscaffolds_controller_test.rb 
invoke helper 
create  app/helpers/myscaffolds_helper.rb 
invoke  test_unit 
create  test/unit/helpers/myscaffolds_helper_test.rb 
invoke assets 

invoke coffee 
create  app/assets/javascripts/myscaffolds.js.coffee 
invoke scss 
create  app/assets/stylesheets/myscaffolds.css.scss 
invoke scss 
identical app/assets/stylesheets/scaffolds.css.scss