ruby-on-rails - 如何使用 getter by symbol 在 SimpleForm 中添加选择字段？

Question

我从如下符号添加了 getter 和 setter：

class User < ActiveRecord::Base
  GENDER = { male: 2, female: 1}

  def gender
    GENDER.key(read_attribute(:gender))
  end

  def gender=(g)
    write_attribute(:gender, GENDER[g.to_sym])
  end
end

如何添加选择字段以选择性别？我想从GENDER.

= simple_form_for [:member, @member] do |f|
  = f.input :gender

Answer 1

您需要使用集合，请参阅此处的文档：https ://github.com/plataformatec/simple_form#collections

 <%= f.input :gender, collection: User::GENDER.keys %>