ref.updateChildren()中的FirebaseException:路径X是更新中X/Y的祖先 [英] FirebaseException in ref.updateChildren(): Path X is an ancestor of X/Y in an update

问题描述

当尝试在同一 ref中使用" users/user "和" users/user/name "之类的路径执行多路径写入时.updatChildren()操作，应用崩溃，但出现以下异常:

When trying to perform a multi-path write using path like "users/user" and "users/user/name" in the same ref.updatChildren() operation, app crashes with the following exception:

com.firebase.client.FirebaseException:路径X是X/Y的祖先更新.

com.firebase.client.FirebaseException: Path X is an ancestor of X/Y in an update.

在Firebase中执行这种多路径写入的最佳方法是什么?谢谢！

What is the best way to perform this kind of multi-path writes in Firebase? Thanks!

编辑:在这种情况下，我想实现以下目标:

EDIT: In this particular case I wanted to achieve something like:

HashMap<String, Object> userUpdate = new HashMap<String, Object>();
HashMap<String, String> user = new HashMap<String, String>();
user.put("firstName", "Ivan");
user.put("initialOfLastName", "V");

userUpdate.put("/user", user);
userUpdate.put("/user/gender", "male")

ref.updateChildren(userUpdate);

推荐答案

像错误状态一样，您不能为/user 指定更新，然后为/指定其他更新用户/性别.将性别更新移动到 user 地图应该可以.

Like the error states, you can't specify an update for /user and then specify a different update for /user/gender. Moving the gender update to the user map should work.

user.put("firstName", "Ivan");
user.put("initialOfLastName", "V");
user.put("gender", "male")

userUpdate.put("/user", user);

ref.updateChildren(userUpdate);

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