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Editorial Team
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Asked: 2026-06-07T06:24:37+00:00

I have a document which contains references to some other documents. Like most people,

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I have a document which contains references to some other documents. Like most people, I am using a MongoId in an “id” field in URLs in order to view these documents. The situation is that I want to display links to these referenced documents from the main document. In order to get the ID of the referenced document I am using code like this:

$mainDocument->getReferencedDoc()->getId();

The obvious annoyance here is that doctrine will run another query to fetch that referenced document just so I can get the ID. But the ID technically already exists in the main document in the reference field. Shouldn’t there be a more efficient way to get only the ID without having to query and hydrate the entire referenced document? Do I have to write custom queries every time I want to do this?

The problem becomes significant when you’re generating a large list of the main documents containing links to their referenced documents.

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1 Answer

  1. Editorial Team

    It seems it does behave this way since this commit on Feb 6th. So this issue is resolved by using the latest mongodb-odm.

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