MongoID relational queries?

You can`t reference embedded documents in MongoID.

Ok. But how can I find the state with of city zip code? – Nazar Hussain Oct 4 at 11:48.

The solution here is two keep the id-s of the Cities inside State and then you can find the states which have certain id-s inside that array. You can implement difficult logic in there with IN, NIN (not in) keywords, etc. I really recommend you to watch this to get into it.

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