Get all documents from Firestore Database

Question

I'm currently making a Flutter app for practice, similar to a Twitter clone app. However, I have a problem when I try to get all documents from Firestore Database. I use UID as document id and want to see all user's posts. But only the posts of the currently logged in user are displayed.

In this case, how can I get all the documents?

I want to display posts by user [B1vq9.........] and posts by [QVf5.........].

I tried:

final FirebaseAuth auth = FirebaseAuth.instance; final User? user = auth.currentUser; final uid = user!.uid; FirebaseFirestore.collection('post').doc(uid).collection('talk').snapshots();

However, this code can only display posts from the currently logged in user.

collection('talk') is a subcollection.enter image description here

pradyot1996 · Accepted Answer · 2022-03-24 02:17:12Z

3

If you need all the posts from posts's collection you only need

FirebaseFirestore.collection('post').snapshots()

If you append .doc(uid).collection('talk') then this will fetch all the documents inside {uid}/talk.

answered Mar 24, 2022 at 2:17

pradyot1996

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4 Comments

YK07 Over a year ago

Hi. Thank you for your advice and I tried it. But this code above [FirebaseFirestore.collection('post').snapshots()]couldn't get all user's posts. I also tried [FirebaseFirestore.collection('post').doc(uid).collection('talk').snapshots()] which can access only current logged in user's post.

pradyot1996 Over a year ago

You mean to say each user's post is inside post/{uid}/talk path?

YK07 Over a year ago

Hi. Thanks for your reply. Yes each user's post is inside of post/{uid}/talk.

pradyot1996 Over a year ago

if that's the case, you might have to do a loop on FirebaseFirestore.collection('post') for each document and get the documents inside 'talk' collection. I would suggest put the posts inside the 'posts' collection directly and add a 'createdBy' field with the user id of the respective user.

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