Cloud firestore: How to create and update a nested array with map object

Question

I want to create/update a set of data in the cloud firestore in that is stored in a nested array method.

I want to define the nested array to be in a Map<String, dynamic> method like this.

Please follow below questions: stackoverflow.com/questions/67838039/… — Rahul Variya
– Rahul Variya, Commented Feb 3, 2023 at 6:35

Rahul Variya · Accepted Answer · 2023-02-03 06:47:30Z

2

First, you have to create instance of categories model then change the value according to your requirement

for ex:

 Categories c =  categories; // here assign your exiting data of categories
     c.copyWith(flavor : ["hello","world"]);

          await FirebaseFirestore.instance
          .collection('user')
          .doc(FirebaseAuth.instance.currentUser?.uid)
          .collection('todos')
          .doc(map["collectionId"])
          .update(FieldValue.arrayUnion(c)))

answered Feb 3, 2023 at 6:47

Rahul Variya

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2 Comments

Nitin Gopal Over a year ago

Thanks, can you give me an example of how to write a copyWith function

Rahul Variya Over a year ago

stackoverflow.com/questions/62372580/… @NitinGopal please refer it

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