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firebaseflutterdartgoogle-cloud-firestore

Get data from subcollection in firestore flutter

In the 1st screen shot there are many documents in collection users. Each documents contains further collection jobPost and that collection contains further documents and its meta data.

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What I want here is go to the every document of collection users and further subcollection jobPost and fetch all the documents. Suppose first it should go to document 1 in collection users, in the document 1 it should fetch all the documnets in subcollection jobPost then it should go to the 2nd document of collection users and then get all the documents in the subcollection jobPost and so on. what will be the query or implementation to this technique

Solution

  • What you're describing is known as a collection group query, which allows you to query all collections with a specific name. Unlike what the name suggests, you can actually read all documents from all subcollections named jobPost that way with:

    FirebaseFirestore.instance.collectionGroup('jobPost').get()...