Confirm the presence of a particular sub collection within Firebase/Firestore by returning true

Can you confirm if the sub-collection named 'categories' exists within the users collection in Firestore? Please return true if it exists and false if it does not.

Answer №1

Subcollections do not require any explicit creation process. They seem to materialize once a document is added to them and vanish once the last document is deleted from them.

To determine if a subcollection exists, simply perform a query on it. If documents are returned in the query results, then you can confirm its existence. It's advisable to limit the query to only retrieve one document for efficiency.

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