我正在尝试使用 5 个表加载结果:
class Meeting < ActiveRecord::Base
has_many :bookings
end
class Booking < ActiveRecord::Base
belongs_to :user
belongs_to :meeting
belongs_to :role
belongs_to :group
end
class Group < ActiveRecord::Base
has_many :group_memberships
has_many :users, through: :group_memberships
end
class GroupMembership < ActiveRecord::Base
belongs_to :group
belongs_to :user
end
class User < ActiveRecord::Base
has_many :group_memberships
has_many :groups, through: :group_memberships
end
在 MeetingController.rb 中:
def index
@meetings = Meeting.where(year: @year)
end
我正在尝试使用 include(:bookings) 但根据bullet-gem急切加载不起作用。在我看来,我称之为这条线:
@meetings.each do |meeting|
meeting.bookings.find_by(group: @group, role: @role)
end
我得到了多 52 行这段代码,这显然意味着我并不急于加载任何数据:
Booking Load (0.1ms) SELECT "bookings".* FROM "bookings" WHERE "bookings"."meeting_id" = ? AND "bookings"."user_id" = 8 AND "bookings"."group_id" = 2 LIMIT 1 [["meeting_id", 207]]
Rendered shared/_book.html.haml (1.0ms)
Booking Load (0.1ms) SELECT "bookings".* FROM "bookings" WHERE "bookings"."meeting_id" = ? AND "bookings"."group_id" = 2 AND "bookings"."role_id" = 4 LIMIT 1 [["meeting_id", 208]]
Booking Load (0.0ms) SELECT "bookings".* FROM "bookings" WHERE "bookings"."meeting_id" = ? AND "bookings"."user_id" = 8 AND "bookings"."group_id" = 2 LIMIT 1 [["meeting_id", 208]]
Rendered shared/_book.html.haml (1.0ms)
Booking Load (0.1ms) SELECT "bookings".* FROM "bookings" WHERE "bookings"."meeting_id" = ? AND "bookings"."group_id" = 2 AND "bookings"."role_id" = 4 LIMIT 1 [["meeting_id", 209]]
子弹日志:
2014-03-29 15:30:48[WARN] user: karlingen
localhost:3000http://localhost:3000/meetings/host
Unused Eager Loading detected
Meeting => [:bookings]
Remove from your finder: :include => [:bookings]
任何想法我应该做什么?