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This is a quick fix for
a hobby project such as this one.

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But I wanted to make it a separate video
since it's incredibly important to

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call out that this fix is just that.

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Only to be used in hobby projects.

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Firebase requires you to have
rules on your real time database.

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By default, the rules require user
authentication before you can read and

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write to the database.

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Since we aren't going to authenticate
users in this small project,

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we'll simply scrap the default rules,
and set read and write to true.

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To do this, we'll navigate to our Projects
database, and then click the Rules tab.

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Then, replace the current
rules with just the word true.

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Finally, click Publish.

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You'll see a warning here, but

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it's safe to ignore it, again,
just in hobby projects.

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You'll want to update these rules and
production applications,

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as you should more than likely always
have some form of user authentication.

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Please see the teacher's note for more
information on how Firebase rules work.

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Now that we have made this quick fix
that you should only ever make for

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small hobby projects,
let's go check out our application again.

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I'll pull up my emulator side by side with
my database from the Firebase console.

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Now, when I attempt to send a message,
it actually appears in the database.

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I hope you didn't blink,
because if you did you probably missed it.

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Awesome!

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We've got messages posting to Firebase,
but

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why aren't they showing up
in our application yet?

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Well, we're currently not listening for
any changes in the real time database.

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In order to receive those changes,

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we're going to learn about Child Event
Listeners, and how we can use them to

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receive a callback when someone
adds a message to our messages node