使用Rails 4（和Hstore）在PostgreSQL中存储嵌套的哈希

I have a Rails app that aggregates a lot of data from Google API's. I store the JSON responses in MongoDB currently (so my Rails app has both pg and mongo). However, today, I've came across PostgreSQL Hstore extension, and I've decided to give it a try.I have a Rails app that aggregates a lot of dat