Can't find hstore for db:test:prepare about activerecord-postgres-hstore

[timuckun]

I have upgraded postgres.app and still no joy. db:structure:dump does not create an entry for the hstore

[timuckun]

Could this be because the table and the extension were created inside of a schema?

[diogob]

could you post the exact error message?

[danmelnick]

Having the same issue here. It seems that something about db:test:prepare is overwriting the availability of the extension.

If I go into my test db and run:

CREATE EXTENSION hstore;

I can see it was created properly by running SELECT * FROM pg_available_extensions;

But if I rerun rake db:test:prepare, it blows up with a type "hstore" does not exist error.

Then if I go back into the test db, the extension is no longer active.

[danmelnick]

Followup: for me, I think this is an issue with pg_dump not including extensions in the structure.sql. So when it loads that in for tests, the extension isn't there.

Since I'm using the activerecord-postgis-adapter which overrides the db:structure:dump task, I'm going to follow up there and see if there's something going on.

[timuckun]

Hi Everybody.

In my case this was because I had created the extension in a different schema. I changed my migration to read like this.

class SetupHstore < ActiveRecord::Migration
  @current_search_path =  Rails.configuration.database_configuration[Rails.env]['schema_search_path']
  def self.up

    execute " set search_path = public; CREATE EXTENSION IF NOT EXISTS hstore; set search_path= #{@current_search_path}"
  end

  def self.down
    execute "set search_path = public;DROP EXTENSION IF EXISTS hstore;set search_path= #{@current_search_path}"
  end
end

This seems to solve the problem for me.

[timuckun]

@diogob You may want to make sure the generator switches to the public schema before it creates the extension by default.

BTW the code I posted fails if there is no search path defined so it has to be made a little more robust.

[diogob]

Thanks for the heads up, I'll use the SCHEMA clause in the CREATE EXTENSION.