或 Firestore 查询中的逻辑操作 [英] OR Logical operation in Firestore Query

问题描述

有什么方法可以在 Firestore 查询中应用 OR 操作，例如:

Is there any way to apply OR operation in firestore queries like:

if (name == "Jhon" || lastname == "James") {然后这样做}

if (name == "Jhon" || lastname == "James") { then do this }

推荐答案

目前 Firestore 似乎不支持析取.

It currently seems that Firestore does not support disjunctions.

解决方法是合并查询query.whereEqual(name, John) 和query.whereEqual(surname, James) 的结果.

Workaround would be to merge results of queries query.whereEqual(name, John) and query.whereEqual(surname, James).

请记住，您必须从结果中删除重复的那些在两种情况下都被评估为真的.

Keep in mind, that from the result you have to delete the duplicated ones, those which are evaluated as true in both conditions.

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