TrimSpacesFor

TrimSpacesFor gem removes leading and trailing white spaces from the AR attribute values. That corresponds to the full-width space.

Installing

gem install trim_spaces_for

Usage

class Article < ActiveRecord::Base
  trim_spaces_for :title
end

> obj = Article.new
> obj.title = "  Article Title  "
> obj.save  #=> true
> obj.title  #=> "Article Title"

class User < ActiveRecord::Base
  trim_spaces_for :age
  validates :age, :numericality => {:only_integer => true}
end

> obj = User.new
> obj.age = "　23" # full-width space
> obj.save  #=> true
> obj.age #=> 23

This project rocks and uses MIT-LICENSE.