CODEWITHSUNDEEP
firebasedartgoogle-cloud-firestoreflutter
Shaurya Jain
Shaurya Jain

Reputation: 71

Filtering & Sorting Firebase (Firestore) Data on a Flutter App

If my user database is on Firestore and on Registration I ask each users a set of few questions (checkboxes, radio buttons, etc). I want to create a Filter and Sort mechanism where a user is able to filter and sort a list of other users (from Firestore) based on multiple filter parameters sorted according to a particular field.

Is what I want to create even possible on Firebase (FireStore) and Flutter or do I need anything else?

Can anybody please link me to any relating Flutter/Firebase documentation, YouTube videos, or any other relevant content.

Upvotes: 7

Views: 4272

Answers (2)

Manish Sahu
Manish Sahu

Reputation: 96

You can create multiple filter and ordering in firestore in flutter app.

 QuerySnapshot orderQuerySnapshot = await orderCollection
            .where("status", isEqualTo: status)
            .where("timestamp", isGreaterThanOrEqualTo: lowerDate)
            .where("timestamp", isLessThanOrEqualTo: upperDate)
            .orderBy('timestamp', descending: true)
            .get();

Upvotes: 0

Rohan Taneja
Rohan Taneja

Reputation: 10667

Once you fetch your list of users from Firestore, you can easily sort and filter them using the methods provided by the List class in Flutter:

sort method for sorting: https://docs.flutter.io/flutter/dart-core/List/sort.html

retainWhere method for filtering: https://docs.flutter.io/flutter/dart-core/List/retainWhere.html

Upvotes: 1

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