如何删除Firestore中具有不同ID的多个文档? [英] How to delete multiple documents that have different ids in firestore?

问题描述

我搜索了多个具有不同ID的文档，我需要实施某种方法将其全部删除，因此我搜索了一下，所以我猜我应该使用批处理的方法.因此，我的数据库如下图所示:图片

I got a multiple documents with different ids, and i need to implement some method to delete them all, i searched so i guess the way i should go is to use batch. So my database is as shown in this Image

所以我能够在这样的数组列表中获取我的文档ID.

so i was able to get my documents' ids in an array list like that..

[0Y5rfMK3duHBUTN9XsO5、2Q70mSjNxkAoUMDAJ8rz等...]

[0Y5rfMK3duHBUTN9XsO5, 2Q70mSjNxkAoUMDAJ8rz, etc...]

和我的代码:

WriteBatch batch = db.batch();
DocumentReference myRef = db.collection("Collection").document(String.valueOf(idsList));
batch.delete(myRef);
batch.commit();

但这是行不通的，因此，如果错过了一点步骤，或者有其他方法可以执行，请将其记录下来.

but this doesn't work, so if there is a little missed step, or if there is any other way to perform it, it would be greatly appreciated to write it down.

推荐答案

您将必须迭代列表并分别为每个列表创建一个DocumentReference.DocumentReference只能引用单个文档，而不能引用文档列表:

You will have to iterate your list and create a DocumentReference for each one individually. A DocumentReference can only refer to a single document, not a list of documents:

WriteBatch batch = db.batch();

for (String id : idsList) {
    DocumentReference ref = db.collection("Collection").document(id);
    batch.delete(ref);
}

batch.commit();

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