使用pg_search gem在Heroku上进行全文搜索

I've implemented full-text search using pg_search gem for my Rails application

我已经使用pg_search gem为我的Rails应用程序实现了全文搜索

My migration to create index looks like

我的创建索引的迁移看起来像

execute(<<-'eosql'.strip)
  CREATE index mytable_fts_idx
  ON mytable
  USING gin(
    (setweight(to_tsvector('english', coalesce("mytable"."name", '')), 'A') ||
    ' ' ||
    setweight(to_tsvector('english', coalesce("mytable"."description",'')), 'B')
    )
  )
eosql

And my controller code looks like

我的控制器代码看起来像

pg_search_scope :full_text_search,
:against => [
  :name, :description],
:using => {
  :tsearch => {
    :prefix => true,
    :dictionary => "english",
    :any_word => true
  }
}

which works totally fine locally on Postgres 9.0.4. However, when I deploy the same to heroku and search for a sample query 'test', it throws up an error

在Postgres 9.0.4上本地完全正常。但是，当我将它部署到heroku并搜索示例查询'test'时，它会引发错误

PGError: ERROR:  syntax error in tsquery: "' test ':*"

SELECT COUNT(count_column) FROM (SELECT  1 AS count_column FROM "mytable"  WHERE (((to_tsvector('english', coalesce("mytable"."name", '')) || to_tsvector('english', coalesce("mytable"."description", ''))) @@ (to_tsquery('english', ''' ' || 'test' || ' ''' || ':*')))) LIMIT 12 OFFSET 0) subquery_for_count ):

Any suggestions on where I'm wrong and what I should be looking at to fix this error? Thanks.

有关我错在哪里以及我应该注意什么来解决此错误的任何建议？谢谢。

1 个解决方案

#1

I'm the main developer of pg_search. Sorry that you ran into that problem! Right now there is a pg_search bug when using :prefix searches against PostgreSQL 8.3 (the default for Heroku).

我是pg_search的主要开发者。对不起，你遇到了这个问题！现在使用时会出现pg_search错误：对PostgreSQL 8.3（Heroku的默认值）进行前缀搜索。

https://github.com/Casecommons/pg_search/issues/10

It's my top priority right now. I'm still figuring out the best way to get the test suite to run against both 8.x and 9.x.

这是我现在的首要任务。我还在找出让测试套件针对8.x和9.x运行的最佳方法。

Update: Unfortunately, :prefix searches don't work against PostgreSQL 8.3 at all. The functionality was introduced in 8.4. I've released pg_search 0.3.3 which improves the error message. Hopefully Heroku will upgrade to 9.0 across the board soon. I believe they want to do so, but they obviously can't just upgrade everyone wholesale without warning.

更新：不幸的是，：前缀搜索根本不适用于PostgreSQL 8.3。该功能在8.4中引入。我发布了pg_search 0.3.3，它改进了错误信息。希望Heroku很快就会升级到9.0。我相信他们想要这样做，但他们显然不能在没有警告的情况下升级所有批发商。

#1