为什么rails会生成空模型？(Why rails is generating empty models?)

为什么rails会生成空模型？(Why rails is generating empty models?)

我正试图生成一些模型，但它们正在生成没有属性。

我使用的是Linux系统，rails版本是：rails --version Rails 4.0.0

我试图用这个命令生成模型：

rails g scaffold Bsdsd description:string test:string oaso:integer

和

rails g model Asdsd description:string test:string oaso:integer

在这个空的类模型中的第一个结果一切正常：

class Bsdsd < ActiveRecord::Base end

第二个结果是测试文件，迁移文件（包含属性）和这个类模型：

class Asdsd < ActiveRecord::Base end

我怎样才能纠正这种行为？

I'm trying to generate some models but they are being generated without attributes.

I'm using a linux system and the rails version is: rails --version Rails 4.0.0

I've tried to generate the models using this commands:

rails g scaffold Bsdsd description:string test:string oaso:integer

and

rails g model Asdsd description:string test:string oaso:integer

The first results in this empty class model everything else ok:

class Bsdsd < ActiveRecord::Base end

The second results in test files, migrations file(that contains the attributes) and this class model:

class Asdsd < ActiveRecord::Base end

How can I correct this behavior?

最满意答案

模型属性是从数据库列中推断出来的，因此您不需要在模型类中指定它们。

在Rails 3.2中，如果我没有记错，

# attr_accessible :description, :test, :oaso

生成的线。 但受保护的属性在Rails 4.0中已被弃用，并被强参数机制所取代。

Model attributes are inferred from database columns, so you don't need them specified in model classes.

In Rails 3.2 you had (if I remember correctly)

# attr_accessible :description, :test, :oaso

line generated. But protected attributes are deprecated in Rails 4.0 and replaced by strong parameters mechanism.