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目前我正在开发一个大型 Web 应用程序并使其运行更快，我决定重构所有 N+1 查询（以减少对数据库的请求数量，http://rails-bestpractices.com/posts/29-fix-n -1-查询）。所以我安装了现在不适用于 Rails 3.1.1 的 gem "bullet"（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，我都会收到相同的警报：

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

...

您能帮我解决这个问题并加快查询速度吗？

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1 回答 1

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我会删除 gem，但:include在两个模型中添加 s 。

于 2011-11-27T01:39:59.117 回答