需要为[=10th=]的所有用户生成账单，创建方法应该是什么？

Question

嗨，

我需要为我的应用程序中的所有用户（居民）生成账单，bill_controller 的 create 方法如下所示：

    def create
    resident = Resident.find_by(hostel:current_admin_user.hostel) # current_admin_user  action is provided by Activeadmin to access current activeadmin user details 
      @bill=resident.bills.create(bill_params)
      if @bill.save
        flash[:info] = "Bills Generated  successfully"
        redirect_to new_bill_path
      else
        flash[:danger] = "Bills Not generated, Please try again!"
        redirect_to new_bill_path

      end
  end

The active admin users can generate bills, and bills will be generated only for residents that have same hostel with admin user ! And bills should be generated for all residents with specific hostel. check out my code, right now it is generating only for current user(resident logged in) . thanks !

Answer 1

使用 where 获取该旅馆的所有居民：

residents = Resident.where(hostel: Hostel.where(name: current_admin_user.hostel).first.id)

遍历居民并为每位居民创建账单：

residents.each do |resident|
  # Note here I use bill_params (because it's in your example), but I'm not totally sure it's the behavior you want
  resident.bills.create(bill_params)
end

请注意，您使用的是 create，因此您使用的 @bill.save 是不必要的（create 调用 save，请参阅 Differences between new + save and create). To check if the bill has been successfully created you could use @bill.persisted? for instance (see : Determine if ActiveRecord Object is New）。

需要为[=10th=]的所有用户生成账单，创建方法应该是什么？

Need to genrate bills for all users in rails, what should be create method?

ruby

activerecord

ruby-on-rails

ruby-on-rails-3

activeadmin