如何在Firebase实时数据库上为聊天应用程序建模? [英] How to model a chat application on Firebase Realtime Database?

问题描述

我正在尝试为聊天应用程序设计一个结构，包括私人消息和通过使用实时firebase将我分组我不知道如何设计结构任何帮助，请我试图做这样的事情是真的

I am try to design a structure for chat application include private message and groups i by using real time firebase i don't know how to design the structure any help please i am try to do something like this is that true

Users
     |
     |_USER1
     |     |
     |     |__FRIENDS
     |     
     |_USER2
           |
           |__FRIENDS

推荐答案

您通常最终将在数据库中为聊天室"建模.这样，每次对话(用户在启动应用程序时可能会看到的对话)都显示为某个根列表下的单独节点.您可能希望将每个对话的主要元数据与其实际消息及其参与者分开.

You'll typically end up modeling the "chat rooms" in the database. So that each conversation (that users may see when they start the app), shows up as a separate node under some root list. You may want to separate the main metadata of each conversation from its actual messages and its participants.

所以:

Chats
  chat1
    title: "...."
    lastUpdated: ...
  chat2
    title: "...."
    lastUpdated: ...
Messages
  chat1
    message1: { ... }
    message2: { ... }
  chat2
    message3: { ... }
    message3: { ... }
Participants
  chat1
    userid1: true
    userid2: true
  chat2
    userid1: true
    userid3: true
    userid4: true
    userid5: true

通过对每个列表中的节点使用相同的键( chat1 ， chat2 )，您可以在需要时轻松查找数据以进行完整的聊天.但是，通过将它们保存在单独的顶级列表中，可以更好地保护应用程序的安全，并更好地控制加载的数据量.

By using the same keys (chat1, chat2) for the nodes in each list, you can easily look up the data for a complete chat when needed. But by keeping them in separate top-level lists, you can better secure the app, and better control how much data is loaded.

另请参阅:

• 在Firebase中管理聊天频道的最佳方法
• 是什么在Firebase/Swift上为两个匹配用户创建聊天室的首选方法?
• 允许用户使用在消息传递应用程序中同时向多个用户发送消息

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