Question

我有2个模型1）预订2）BookingPeriod

预订has_many_booking_periods和booking_period属地_to预订

current_resource_owner.bookings.includes(
        :slot, :booking_periods, plan_location: [:plan, content: [:original_image]]
      ).left_outer_joins(
        :booking_periods, plan_location: :likes
      ).select(
        'bookings.*, COUNT(plan_locations_likes.id) as likes_count, COUNT(booking_periods.id) as booking_count'
      )
      .where(
        "booking_periods.to > ?", Date.current
      )
      .group(
        'bookings.id'
      )

如果所有预订期都在将来，我需要选择预订记录。例如，如果预订1有3个预订期。和2个预订期日期已经过去。并且将来有一个booking_period，我不想要该记录，但是从上面的查询中我得到了该记录。

我认为要获得正确的记录，我需要这样查询

current_resource_owner.bookings.includes(
    :slot, :booking_periods, plan_location: [:plan, content: [:original_image]]
  ).left_outer_joins(
    :booking_periods, plan_location: :likes
  ).select(
    'bookings.*, COUNT(plan_locations_likes.id) as likes_count, COUNT(booking_periods.id) as booking_count'
  )
  .where(
    "booking_periods.to #{params[:booking] == 'previous_bookings' ? '<' : '>'} ?", Date.current
  )
  .group(
    'bookings.id'
  ).having(
    "count(booking_periods.id) >= ?", "SELECT 
     COUNT(booking_periods.id) from bookings INNER JOIN 
     booking_periods ON bookings.id = booking_periods.id"
  )

基本上，我需要做一些事情，例如预订的预订期间数不应小于我按查询分组后得到的COUNT(booking_periods)。

查询关联模型的数量

0 个答案: