CODEWITHSUNDEEP
firebasefluttergoogle-cloud-firestore
SUX
SUX

Reputation: 900

how to get listener to multiple documents collections

i use cloud firestore in flutter and i have this structure

collections > documents > sub-collections > sub-documents

in my cloud 

=> collections (users)
  => documents (user_id)
    => sub-collections (Video)
       => sub-documents (video_id)

i want to listen to all sub-collections in the documents (user_id) without specify the user_id

like that 

Firestore.instance.collection('users').document(*).collection('Video').snapshots().listen((data)

Upvotes: 0

Views: 1294

Answers (1)

Frank van Puffelen
Frank van Puffelen

Reputation: 598728

If you want to listen to a specific (named) collection across the entire database, you can perform a so-called Collection Group Query. See the documentation on these queries for an example.

In Flutter this would look something like:

Firestore.instance.collectionGroup('Video').snapshots().listen((data)

This will listen to all Video collections, not just the ones under users though.

Upvotes: 2

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