best way to add multi-tenancy support

[fair...@fieldday.ag]

Hello,

  I've just started using pgsearch, and it was easy to setup and get going, working great. 

  I now need to ensure search results are scoped to support multi tenancy.  I am using ActsAsTenant, with an organization_id column on most of my models.

I added an organization_id column to the pg_search_documents, and figured I could then either add acts_as_tenant to the PgSearch::Document or could filter the via  a proxy method.

  I'm wondering if others have thought thru this and have a recommended approach as the best spot to hook into this flow and modify PgSearch::Document.  I'm currently just monkey patching it, but thought I'd check to see if there were better ideas.

Thanks,

~Michael