Ruby on Rails 3.1与Postgres 9.1.4搭配时,hstore未知运算符错误如何解决?
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本文共计398个文字,预计阅读时间需要2分钟。
我正在尝试将hstore数据列添加到现有的STI模型中。类似于Postgres HStore错误——未知操作符。尽管我知道我已经安装了hstore扩展,并且已经删除了数据库并重新建立,但错误仍然存在。
我正在尝试将hstore数据列添加到现有的STI模型中.类似于Postgres HStore Errors – Unknown Operator但据我所知,我已经安装了hstore扩展.我已经删除了数据库并从迁移重建它而没有错误,但规格仍然失败.
Mac OS X 10.8.2 Rails 3.1.10 psql (PostgreSQL) 9.1.4
user.rb
has_many :targets def complete_targets targets.where("data @> (:key => :value)", key: 'complete', value: 'true') end
targets.rb
belongs_to :user serialize :data, ActiveRecord::Coders::Hstore
setup_hstore迁移:
class SetupHstore < ActiveRecord::Migration def self.up execute "CREATE EXTENSION IF NOT EXISTS hstore" end def self.down execute "DROP EXTENSION IF EXISTS hstore" end end
添加数据列迁移:
class AddDataToRecords < ActiveRecord::Migration def change add_column :records, :data, :hstore end end
添加索引迁移:
class AddHstoreIndexes < ActiveRecord::Migration def up execute "CREATE INDEX records_gin_data ON records USING GIN(data)" end def down execute "DROP INDEX records_gin_data" end end
错误:
ActiveRecord::StatementInvalid: PG::Error: ERROR: operator does not exist: unknown => unknown LINE 1: ...records"."user_id" = 244 AND (data @> ('complete' => 'true')...
尝试通过直接查询创建扩展时的Navicat输出:
CREATE EXTENSION hstore Error : ERROR: extension "hstore" already exists 也许这是一个简单的数据类型问题,请尝试:
data @> ('complete'::text => 'true'::text)
但是=>运算符已弃用(并已在9.2中删除),最好使用hstore()格式:
(data @> hstore('complete','true'))
本文共计398个文字,预计阅读时间需要2分钟。
我正在尝试将hstore数据列添加到现有的STI模型中。类似于Postgres HStore错误——未知操作符。尽管我知道我已经安装了hstore扩展,并且已经删除了数据库并重新建立,但错误仍然存在。
我正在尝试将hstore数据列添加到现有的STI模型中.类似于Postgres HStore Errors – Unknown Operator但据我所知,我已经安装了hstore扩展.我已经删除了数据库并从迁移重建它而没有错误,但规格仍然失败.
Mac OS X 10.8.2 Rails 3.1.10 psql (PostgreSQL) 9.1.4
user.rb
has_many :targets def complete_targets targets.where("data @> (:key => :value)", key: 'complete', value: 'true') end
targets.rb
belongs_to :user serialize :data, ActiveRecord::Coders::Hstore
setup_hstore迁移:
class SetupHstore < ActiveRecord::Migration def self.up execute "CREATE EXTENSION IF NOT EXISTS hstore" end def self.down execute "DROP EXTENSION IF EXISTS hstore" end end
添加数据列迁移:
class AddDataToRecords < ActiveRecord::Migration def change add_column :records, :data, :hstore end end
添加索引迁移:
class AddHstoreIndexes < ActiveRecord::Migration def up execute "CREATE INDEX records_gin_data ON records USING GIN(data)" end def down execute "DROP INDEX records_gin_data" end end
错误:
ActiveRecord::StatementInvalid: PG::Error: ERROR: operator does not exist: unknown => unknown LINE 1: ...records"."user_id" = 244 AND (data @> ('complete' => 'true')...
尝试通过直接查询创建扩展时的Navicat输出:
CREATE EXTENSION hstore Error : ERROR: extension "hstore" already exists 也许这是一个简单的数据类型问题,请尝试:
data @> ('complete'::text => 'true'::text)
但是=>运算符已弃用(并已在9.2中删除),最好使用hstore()格式:
(data @> hstore('complete','true'))

