This package is discontinued and will receive no further updates
Feel free to fork the repository and use/extend the code for your needs.
PLEASE NOTE: If you're looking for a package to use in your Flutter app, please have a look at the official documentation: firebase.google.com/docs/flutter.
Introduction
NOTE: This package provides three libraries:
-
For browser-based applications:
package:firebase/firebase.dartandpackage:firebase/firestore.dartare wrappers over the Firebase JS API. -
For the Dart VM and Fuchsia:
package:firebase/firebase_io.dartis a lightly maintained wrapper over the Firebase Database REST API. Contributions to expand support to the other REST APIs are appreciated!
Other platforms
-
Flutter: FlutterFire plugins
-
Node (via dart2js): Anatoly Pulyaevskiy has been working on unofficial wrappers.
Firebase Configuration
You can find more information on how to use Firebase on the Getting started page.
Don't forget to setup correct rules for your realtime database, storage and/or firestore in the Firebase console.
If you want to use Firestore, you need to enable it in the Firebase console and include the additional js script.
Authentication also has to be enabled in the Firebase console. For more info, see the next section in this document.
Using this package for browser applications
You must include the right Firebase JavaScript libraries into your .html file
to be able to use this package. Usually this means including firebase-app.js
as well as one or more libraries corresponding to the features you are using.
For example:
<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-database.js"></script>
<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-firestore.js"></script>The firestore library is available in firestore.dart. You can find an example
how to use this library in the example/firestore.
Real-time Database Example
import 'package:firebase/firebase.dart';
void main() {
initializeApp(
apiKey: "YourApiKey",
authDomain: "YourAuthDomain",
databaseURL: "YourDatabaseUrl",
projectId: "YourProjectId",
storageBucket: "YourStorageBucket");
Database db = database();
DatabaseReference ref = db.ref('messages');
ref.onValue.listen((e) {
DataSnapshot datasnapshot = e.snapshot;
// Do something with datasnapshot
});
}Firestore Example
import 'package:firebase/firebase.dart';
import 'package:firebase/firestore.dart' as fs;
void main() {
initializeApp(
apiKey: "YourApiKey",
authDomain: "YourAuthDomain",
databaseURL: "YourDatabaseUrl",
projectId: "YourProjectId",
appId: "YourAppId",
storageBucket: "YourStorageBucket");
fs.Firestore store = firestore();
fs.CollectionReference ref = store.collection('messages');
ref.onSnapshot.listen((querySnapshot) {
querySnapshot.docChanges().forEach((change) {
if (change.type == "added") {
// Do something with change.doc
}
});
});
}Using this package with the Dart VM and Fuchsia
This library also contains a dart:io client.
Create an instance of FirebaseClient and then use the appropriate method
(GET, PUT, POST, DELETE or PATCH). More info in the
official documentation.
The dart:io client also supports authentication. See the documentation on how to get auth credentials.
import 'package:firebase/firebase_io.dart';
void main() {
var credential = ... // Retrieve auth credential
var fbClient = new FirebaseClient(credential); // FirebaseClient.anonymous() is also available
var path = ... // Full path to your database location with .json appended
// GET
var response = await fbClient.get(path);
// DELETE
await fbClient.delete(path);
...
}Examples
You can find more examples on realtime database, auth, storage and firestore in the example folder.
Dart Dev Summit 2016 demo app
Demo app which uses Google login, realtime database and storage.
Before tests and examples are run
You need to ensure a couple of things before tests and examples in this library are run.
All tests and examples
Create config.json file (see config.json.sample) in lib/src/assets folder
with configuration for your Firebase project.
To run the io tests, you need to provide the service_account.json file. Go to
Settings/Project settings/Service accounts tab in your project's Firebase
console, select the Firebase Admin SDK and click on the
Generate new private key button, which downloads you a file. Rename the file
to service_account.json and put it into the lib/src/assets folder.
Warning: Use the contents of
lib/src/assetsis only for development and testing this package.
App tests
No special action needed here.
Auth tests and example
Auth tests and some examples need to have Auth providers correctly set. The
following providers need to be enabled in Firebase console,
Auth/Sign-in method section:
- E-mail/password
- Anonymous
- Phone
Database tests and example
Database tests and example need to have public rules to be able to read and
write to database. Update your rules in Firebase console,
Database/Realtime Database/Rules section to:
{
"rules": {
".read": true,
".write": true
}
}Warning: At the moment, anybody can read and write to your database. You usually don't want to have this in your production apps. You can find more information on how to setup correct database rules in the official Firebase documentation.
Firestore tests and example
To be able to run tests and example, Firestore needs to be enabled in the
Database/Cloud Firestore section.
Firestore tests and example need to have public rules to be able to read and
write to Firestore. Update your rules in Firebase console,
Database/Cloud Firestore/Rules section to:
service cloud.firestore {
match /databases/{database}/documents {
match /{document=**} {
allow read, write;
}
}
}
Warning: At the moment, anybody can read and write to your Firestore. You usually don't want to have this in your production apps. You can find more information on how to setup correct Firestore rules in the official Firebase documentation.
You also need to include the additional firebase-firestore.js script. See
more info.
Storage tests and example
Storage tests and example need to have public rules to be able to read and
write to storage. Firebase Storage Rules Version 2 is
required for list
and listAll. Update your rules in Firebase console, Storage/Rules section
to:
rules_version = '2';
service firebase.storage {
match /b/YOUR_STORAGE_BUCKET_URL/o {
match /{allPaths=**} {
allow read, write;
}
}
}
Warning: At the moment, anybody can read and write to your storage. You usually don't want to have this in your production apps. You can find more information on how to setup correct storage rules in the official Firebase documentation.
Remote Config example
In order to use Remote Config functionality in your web app, you need to include
the following script in your .html file, in addition to the other Firebase
scripts:
<script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-remote-config.js"></script>Remote config parameters are defined in Firebase console. Three data types are
supported by the API: String, Number, and Boolean. All values are stored by
Firebase as strings. It's your responsibility to assure that numbers and
booleans are defined appropriately. A boolean value can be represented as either
of: 0/1, true/false, t/f, yes/no, y/n, on/off.
For example:
title: Welcome
counter: 2
flag: true
Below is a simple example of consuming remote config:
final rc = firebase.remoteConfig();
await rc.ensureInitialized();
rc.defaultConfig = {'title': 'Hello', 'counter': 1, 'flag': false};
print('title: ${rc.getString("title")}'); // <-- Hello
print('counter: ${rc.getNumber("counter").toInt()}'); // <-- 1
print('flag: ${rc.getBoolean("flag")}'); // <-- false
await rc.fetchAndActivate();
print('title: ${rc.getString("title")}'); // <-- Welcome
print('counter: ${rc.getNumber("counter").toInt()}'); // <-- 2
print('flag: ${rc.getBoolean("flag")}'); // <-- trueRefer to Remote Config Documentation for more details.
Remote Config tests
In order to test remote config, you need to obtain service account credentials for your Firebase project. Each Firebase project has a default service account that will work for this purpose. The service account can be found in the GCP console by choosing the project, then in the menu: IAM & admin > Service accounts.
Once you have located the service account, choose Actions > Create key. Pick
JSON as the format. Put the JSON file in lib/src/assets/service_account.json.
Ensure that the remote config for your project is empty. The unit test will refuse to run with the following message if it detects that the remote config of the project is not empty on start:
This unit test requires remote config to be empty.
This is done to avoid overwriting your remote config in case if you run the test in a Firebase project that is used for other purposes.