动态生成对象、ruby、rails的属性

给定这些参数:

例:1

{:field => 'admin', :id => "1"}

例:2

{:field => 'client', :id => "1"}

{:field => 'partner', :id => "1"}

我可以(当然也可以)动态地将这个应用到 User

控制器

#note the field attribute is not a field
#the field attribute I'm trying to set above to what are given in the params hash

def update_user
    field = params[:field]
    @user = User.find(params[:id])
    @user.field = !@user.field
    @user.save(false)
    render :nothing => true
end

为什么不发送has with params并更新 update_attributes(params[:user]) ? 因为用户属性是受保护的,这样更新布尔值就更容易了。