Advertisements I read here that: Do not use monotonically increasing document IDs such as: Customer1, Customer2, Customer3, … Product 1, Product 2, Product 3, … I plan to use document IDs such: 2023-09-01, 2023-09-02, 2023-09-07, … The dates are not always consecutive. It can be or cannot be. Can be these dates be considered monotonically?… Read More Can dates can be considered monotonically in Firestore?
Advertisements I have this map field in a Firestore document: That exists at this location: users/jeff/tasks/my_task_id According to the docs, to calculate the size of the document I need: The document name size = 6 + 5 + 6 + 11 + 16 = 44 The sum of the string size of each field name… Read More How to calculate the size of a map field inside a Firestore document?
Advertisements I have this document: As you can see, the field map is of type Map. I read the data from Firestore using this function: async function getJohn() { var ref = doc(db, "users/john"); const document = await getDoc(ref); if(document.exists()) { let map = document.data().map if (map instanceof Map) { alert("Is a Map.") } else… Read More How to check if a field in Firestore document is a Map?
Advertisements After registering as a member of firebase, you are also trying to add data to the firestore The code is as follows await FirebaseFirestore.instance.collection(‘users’).doc(FirebaseAuth.instance.currentUser!.uid).set({ ‘1_email’ : FirebaseAuth.instance.currentUser!.email, ‘2_name’ : ‘Null’, ‘3_phone’ : ‘01012345678’, ‘4_age’ : 20, } ); I want the data to be stored in the firestore only for the first time So… Read More Saving Day to Firestore for the first time only in flutter
Advertisements Currently, I have a React application connected to Firestore. I followed the official documentation on adding custom objects to Firestore via the help of withConverter function. Now I want to read all the data I uploaded to Firestore into my app as a custom object again. But the documentation on Firestore did not show… Read More Retrieving multiple documents as custom object in Firestore
Advertisements fam, I have a document added to cloud firestore, I can successfully read data from the database, I want to get only the ID from the document, here’s the code snippet:- const [tasks, setTasks] = useState([]); const [fetch, setFetch] = useState({ id: “”, }); const {userId} = useParams(); const collectionRef = collection(db, “microsystems/” +… Read More How to fetch id from console log firestore and react js
Advertisements I have a Firestore collection called users that contains user documents. Each user document has an optional field called previewPosts, which is an array representing the user’s four most recent posts. Additionally, there is another field called lastConnection that stores the timestamp of the user’s last online connection. I want to implement a query… Read More Firestore query to retrieve users based on last connection and presence of field
Advertisements I’m trying to access the props from this taskList array that I’m grabbing from firestore, The taskList is an array of objects so shouldn’t I just be able to access them with task.propName? function App() { const [taskList, setTaskList] = useState<Array<object>>() const taskCollectionRef = collection(db, "tasks") useEffect(() => { const getTaskList = async ()… Read More How can I access the props from this taskList array?
Advertisements In a component in react, I wasnt to display the sum count of two subcollections in a specific document in a collection. The issue is, each time I go to a different page and go back, the responses seem to refetch and take some time to display (even though the underlying data didn’t change).… Read More Firebase get 2 subcollections count caching
Advertisements I’ve noticed many times that transaction or batch write with many documents at once creating documents with the same Timestamp . How could i prevent that ? >Solution : This is actually by design, all writes in a transaction happen at the logically same time. There is no way to configure this behavior. If… Read More How to make unique Timestamp within transaction or batch write