ruby-on-rails – PG：错误关系不存在

发布时间：2020-12-17 02:04:54 所属栏目：百科来源：网络整理

导读：我正在使用Rails 3.2.x并使用RailsAdmin. 我运行了很多次迁移并多次更改了我的数据库结构.因此,我得到一个PG：错误,表示对于真正不存在的表,不存在关系. 这是错误： ActiveRecord::StatementInvalid at /PG::Error: ERROR: relation "addresses" does not ex

我正在使用Rails 3.2.x并使用RailsAdmin.

我运行了很多次迁移并多次更改了我的数据库结构.因此,我得到一个PG：错误,表示对于真正不存在的表,不存在关系.

这是错误：

ActiveRecord::StatementInvalid at /
PG::Error: ERROR:  relation "addresses" does not exist
LINE 5:              WHERE a.attrelid = '"addresses"'::regclass
                                        ^
:             SELECT a.attname,format_type(a.atttypid,a.atttypmod),pg_get_expr(d.adbin,d.adrelid),a.attnotnull,a.atttypid,a.atttypmod

所以简而言之,当我转到/ admin时,我的development.log中显示的错误是这样的：

Started GET "/admin" for 127.0.0.1 at 2013-07-04 02:24:07 -0500
Processing by RailsAdmin::MainController#dashboard as HTML
  Cart Load (0.5ms)  SELECT "carts".* FROM "carts" WHERE "carts"."id" = $1 LIMIT 1  [["id",5]]
  User Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
   (0.6ms)  SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = 1 AND (((roles.name = 'admin') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
   (0.6ms)  SELECT COUNT(*) FROM "roles" INNER JOIN "users_roles" ON "roles"."id" = "users_roles"."role_id" WHERE "users_roles"."user_id" = 1 AND (((roles.name = 'seller') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL)))
PG::Error: ERROR:  relation "addresses" does not exist
LINE 5:              WHERE a.attrelid = '"addresses"'::regclass
                                        ^
:             SELECT a.attname,a.atttypmod
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"addresses"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum

Completed 500 Internal Server Error in 1269ms

ActiveRecord::StatementInvalid - PG::Error: ERROR:  relation "addresses" does not exist
LINE 5:              WHERE a.attrelid = '"addresses"'::regclass
                                        ^
:             SELECT a.attname,a.atttypmod
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"addresses"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum

我该如何解决？

解决方法

我建议删除并重新创建整个数据库.在执行此操作时,您可能会在迁移过程中遇到一些问题 – 将它们全部修复,以便可以彻底安装应用程序.

（编辑：李大同）

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