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Build a Realtime Database App with Firebase

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Firebase Permissions

1:40 with Strange Learning

Permissions in Firebase determine who can access your Firebase data and how they can access it. In this video, we’ll setup your Firebase permissions for a hobby project. Please note: NEVER set permissions for a production app like this. We will cover more about permissions in future workshops in Firebase.

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    This is a quick fix for a hobby project such as this one. 0:00
    But I wanted to make it a separate video since it's incredibly important to 0:03
    call out that this fix is just that. 0:06
    Only to be used in hobby projects. 0:09
    Firebase requires you to have rules on your real time database. 0:11
    By default, the rules require user authentication before you can read and 0:15
    write to the database. 0:18
    Since we aren't going to authenticate users in this small project, 0:20
    we'll simply scrap the default rules, and set read and write to true. 0:23
    To do this, we'll navigate to our Projects database, and then click the Rules tab. 0:28
    Then, replace the current rules with just the word true. 0:34
    Finally, click Publish. 0:41
    You'll see a warning here, but 0:43
    it's safe to ignore it, again, just in hobby projects. 0:45
    You'll want to update these rules and production applications, 0:48
    as you should more than likely always have some form of user authentication. 0:52
    Please see the teacher's note for more information on how Firebase rules work. 0:56
    Now that we have made this quick fix that you should only ever make for 1:00
    small hobby projects, let's go check out our application again. 1:03
    I'll pull up my emulator side by side with my database from the Firebase console. 1:07
    Now, when I attempt to send a message, it actually appears in the database. 1:11
    I hope you didn't blink, because if you did you probably missed it. 1:16
    Awesome! 1:22
    We've got messages posting to Firebase, but 1:23
    why aren't they showing up in our application yet? 1:25
    Well, we're currently not listening for any changes in the real time database. 1:27
    In order to receive those changes, 1:31
    we're going to learn about Child Event Listeners, and how we can use them to 1:33
    receive a callback when someone adds a message to our messages node 1:36

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