ruby 或者rails 把string 转换成类

例如我有一个类:Article

在这我要把"Atricle"这个字符串转换成类

1."Article".constantize

结果: => Article (call 'Article.connection' to establish a connection)

 "Article".constantize.class
 => Class 

2.ruby 方法

 Object.const_get("Article")

结果

Article(id: integer, title: string, content: text, click_count: integer, share_count: integer, article_type_id: integer, recommend_type_id: integer, created_at: datetime, updated_at: datetime, deleted: integer, image: string, article_url: text, u_id: string)