ruby中字符的转换

时间:2020-12-09 21:50:57

1.将表格名转成class名

  classify

"book_comments".classify
=> "BookComment"
 

2.class名转成table_name(和上面的相反)
  tableize

"BookComment".tableize
=> "book_comments"

3.将class名转成class
  constantize

"BookComment".constantize
=> BookComment

4.string复数化(可用于生成table_name)
  pluralize

 "bookcomment".pluralize
=> "bookcomments"

5.string单数化
  singularize

"bookcomments".singularize
=> "bookcomment"