4

5 つのテーブルで結果を熱心にロードしようとしています。

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

MeetingController.rb の内部:

def index
    @meetings = Meeting.where(year: @year)
end

includes(:bookings) を使用しようとしていますが、bullet-gemによると、熱心な読み込みが機能していません。そして、私のビューの中で私はこの行を呼んでいます:

@meetings.each do |meeting|
  meeting.bookings.find_by(group: @group, role: @role)
end

このコードの 52 行を複数取得しています。これは明らかに、データのロードを熱心に行っていないことを意味します。

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]]

bullet.log:

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]

私が何をすべきか考えていますか？

4

2 に答える 2

0

次のことを試してください。 

@meetings = Meeting.includes(:bookings).where(year: @year)

また、@year はどのように渡していますか?

于 2014-09-27T22:39:15.797 に答える