Rails 3：如何从复选框中获取输入

Question

我对 ruby​​ on rails 很陌生...我的问题是从复选框中获取输出。如果 复选框是false，我想展示每场音乐会，但我总是得到else条件...... 怎么可能得到@concerts = Concert.find(:all, :order => "day")作为标准输出，如果check_box被选中，得到else条件？

#index.html.erb
check_box('dm', false, options = {}, checked_value = "1", unchecked_value = "0")


# controller.rb
def index
  if params[:dm] == '0'
    @concerts = Concert.find(:all, :order => "day")
  else
    @concerts = Concert.find(:all, :order => "day", :conditions => {:bool => false})
end

开发日志

在 2012-08-14 13:21:39 +0200 开始为 127.0.0.1 获取“/” ConcertsController#index 处理为 HTML [1m[36mConcert Load (0.0ms)[0m [1mSELECT concerts.* FROM concerts WHERE concerts.bool = 0 ORDER BY day[0m [1m[35mConcert Load (15.6ms)[0m SELECT concerts.* FROM concerts ORDER BY lineup [1m[36mConcert Load (0.0ms)[0m [1mSELECT DISTINCT day FROM concerts ORDER BY day[0m [1m[35mConcert Load (0.0ms)[0m SELECT DISTINCT club_id FROM concerts ... 在布局/应用程序中渲染了 Concerts/index.html.erb (78.0ms) 在 94 毫秒内完成 200 次 OK（查看次数：78.0 毫秒 | ActiveRecord：15.6 毫秒）

Answer 1

试试这个

def index
  if params[:dm] == '0'
    @concerts = Concert.find(:all, :order => "day")
  else
    @concerts = Concert.find(:all, :order => "day", :conditions => {:bool => false})
end

控制器接收到的复选框值是字符串形式的 0 或 1。另外，应该是params[:dm]。