How to update a certain field?

Question

 String statusOff= "off";
    Map<String, Object> status = new HashMap<>();
    status.put("status", statusOff);
    db.collection("Users").document("terapis")
        .update(status)
        .addOnSuccessListener(new OnSuccessListener<Void>() {
           @Override
           public void onSuccess(Void aVoid) {
           }

The code is working but i have a problem, as you can see, i manually input the document id I dont know any function like whereEqualTo for update.

Is there any way to do this?

score 0 · Answer 1 · answered Aug 08 '19 at 22:24

If you're trying to update all documents that match some condition, that's not possible. There is no SQL-like "update where" functionality. You will have to query for each of the documents that match your condition, iterate the results, then update each document individually.

How to update a certain field?

1 Answers1