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How to add a custom id to a firestore document instead of automatically generated id by firebase 9?

i've problem transforming this code into firebase 9 version -

db.collection("cities").doc("LA").set({
name: "Los Angeles",
state: "CA",
country: "USA" })

How to add a custom id to a firestore document instead of automatically generated id by firebase 9?

i've problem transforming this code into firebase 9 version -

db.collection("cities").doc("LA").set({
name: "Los Angeles",
state: "CA",
country: "USA" })

• javascript
• firebase
• web
• google-cloud-firestore

Share Improve this question Follow edited Dec 18, 2021 at 14:25 Mahmudul Ahsan asked Dec 18, 2021 at 14:17 Mahmudul AhsanMahmudul Ahsan 4311 silver badge66 bronze badges 1

• thanks bro got it. I'm newbie at firebase, didn't notice that tab. – Mahmudul Ahsan Commented Dec 18, 2021 at 14:29

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 8

The example that you've provided seems to be from Firestore's documentation itself. Switch to (modular) tab instead of (namespaced) to see the same in V9 syntax.

The syntax for setting a document with custom ID using Modular SDK is follows (for the same example):

import { doc, setDoc } from "firebase/firestore"; 

await setDoc(doc(db, "cities", "LA"), {
  name: "Los Angeles",
  state: "CA",
  country: "USA"
});

after researching a lot of time I got a solution for this by myself

Try this one.

So, the solution is:

        FirebaseFirestore db = FirebaseFirestore.getInstance();

        // [START set_document]
        Map<String, Object> city = new HashMap<>();
        city.put("batch", "25");
        city.put("blood", ""+stuBlood.getText().toString());
        city.put("email", ""+stuEmail.getText().toString());
        city.put("facebook", ""+stuFacebook.getText().toString());
        city.put("gender", ""+stuGender.getText().toString());
        city.put("id", ""+stuID.getText().toString());
        city.put("image", ""+stuImage.getText().toString());
        city.put("location", ""+stuLocation.getText().toString());
        city.put("name", ""+stuName.getText().toString());
        city.put("phone", ""+stuPhone.getText().toString());
        city.put("whatsapp", ""+stuWhatsApp.getText().toString());
        city.put("telegram", ""+stuTelegram.getText().toString());
        city.put("session", "2020-2021");

        
        String documentID = "YOUR_CUSTOM_DOC_ID (You can also add String here)";

        db.collection("YOUR_COLLECTION_PATH").document(""+documentID)
                .set(city)
                .addOnSuccessListener(new OnSuccessListener<Void>() {
                    @Override
                    public void onSuccess(Void aVoid) {
                        Log.d(TAG, "DocumentSnapshot successfully written!");
                        Toast.makeText(add_student_info.this, "Added Successfully!", Toast.LENGTH_LONG).show();
                    }
                })
                .addOnFailureListener(new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        Log.w(TAG, "Error writing document", e);
                        Toast.makeText(add_student_info.this, "Failed to add Student data!", Toast.LENGTH_LONG).show();

                    }
                });
        // [END set_document]


    }

Hope it's working now

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