I am new in flutter firebase. I want to print total value of the field named amount of each firebase document

Question

There is a field named Amount inside the document under a collection called Use of Fund. Now I want to add the value of the field named amount of each document enter image description here

Answer 1

First Step: Get the documents from the collection:

final result = await FirebaseFirestore.instance.collection('Use of Fund').get();

Second Step: Define a variable to hold the result and start it with 0:

double totalAmount = 0;

Third Step: Loop on the docs inside the result and add the amount of each doc :

for (var doc in result.docs){
    totalAmount += doc['amount'];
}

That's It!