如何获取 Firebase 集合中的所有文档(包括不存在的祖先文档)? [英] How do you fetch all documents (including non-existent ancestor documents) in a Firebase collection?

问题描述

我正在尝试提取users"集合中的所有文档，但它只提取fred"和lisa"，而忽略了所有斜体文档:

I am trying to pull all the documents in the collection 'users', but it only pulls 'fred' and 'lisa', and ignores all the italicized documents:

对于这个数据:

尝试获取所有文档:

将产生:

info: length 2
info: fred  =>  { gender: 'male', contacts: [ '' ] }
      lisa  =>  { contacts: [ '' ] }

根据 Firebase 文档(Firebase:添加和管理数据):

According to the Firebase documentation (Firebase: Add and Manage Data):

警告:即使不存在的祖先文档出现在控制台中，它们也不会出现在查询和快照中.您必须创建文档以将其包含在查询结果中.

Warning: Even though non-existent ancestor documents appear in the console, they do not appear in queries and snapshots. You must create the document to include it in query results.

注意:当用户点击触发 firebase.auth() 函数的注册按钮时，不存在的祖先用户似乎是自动创建的(fred 和 lisa 是手动创建的).

Note: The non-existent ancestor users seem to be auto-created when the user hits the sign-up button that triggers a firebase.auth() function (fred and lisa were created manually).

如果某些用户没有出现在我的查询中，我将如何打印每个用户的 contacts?我是否需要定期运行手动重新添加所有用户的脚本，还是有更优雅的解决方案?

How would I print the contacts of each user if some of the users do not show up in my queries? Would I need to periodically run a script that manually re-adds all the users or is there a more elegant solution?

推荐答案

如果您尝试从 Firebase 身份验证中列出所有注册用户，您可以使用 Firebase SDK 功能:

If you're trying to list all your registered users from Firebase auth, you can use the Firebase SDK function:

    function listAllUsers(nextPageToken) {
      admin.auth().listUsers(1000, nextPageToken)
        .then(function(listUsersResult){
          listUsersResult.users.forEach(function(userRecord) {
            console.log('user', userRecord.toJSON());
          })
          if (listUsersResult.pageToken) {
            // list next batch of users
          }
        })
        .catch(function(err) {
          console.log('Error listing users: ', error)
        });
    }

    listAllUsers();

通过 http://firebase.google.com/docs/auth/admin/manage-users#list_all_users

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