Question

目前我正在开发一个大型Web应用程序并使其工作更快我决定重构所有N + 1个查询（以减少对数据库的请求数量http://rails-bestpractices.com/posts/29-fix-n-1-queries）。所以我安装了gem“bullet”，它现在不能与Rails 3.1.1一起使用（你可以使用来自https://github.com/flyerhzm/bullet的fork）。在每个页面上使用declarative_authorization gem时，我会收到相同的警报：

N+1 Query detected
  Role => [:permissions]
  Add to your finder: :include => [:permissions]

N+1 Query detected
  Permission => [:permission_rules]
  Add to your finder: :include => [:permission_rules]

CACHE (0.0ms)  SELECT "roles".* FROM "roles" 
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 1
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 2
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 3
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 4
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 6
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 7
  CACHE (0.0ms)  SELECT "permissions".* FROM "permissions" WHERE "permissions"."role_id" = 8
  CACHE (0.0ms)  SELECT "permission_rules".* FROM "permission_rules" INNER JOIN "permission_rules_permissions" ON "permission_rules"."id" = "permission_rules_permissions"."permission_rule_id" WHERE "permission_rules_permissions"."permission_id" = 30
  CACHE (0.0ms)  SELECT "permission_rules".* FROM "permission_rules" INNER JOIN "permission_rules_permissions" ON "permission_rules"."id" = "permission_rules_permissions"."permission_rule_id" WHERE "permission_rules_permissions"."permission_id" = 31

...

你可以帮我解决这个问题并加快查询速度吗？

Answer 1

我会移除宝石，但在两个模型的每个模型中添加:include。

使用gem“bullet”修复“declarative_authorization”gem中的N + 1查询

1 个答案: