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Nov 29, 2019 Here is the video to learn how to create and configure Firebase Cloud Messaging Sender ID and Server API Key: If you are an HTTPS website, after updating the FCM key, you would need to download your manifest.json file again from Settings Installation Settings Step 2, and save it in the root folder. For HTTP sites there is no extra step. Apr 10, 2020  Open the IAM & Admin page in the GCP Console. Open the IAM & Admin page. Select your project and click Continue. In the left nav, click Service accounts. Look for the service account for which you wish to create a key, click the More morevert button in that row, and then click Create key.

Python interface to the Google's Firebase REST APIs

Project description

Author: Joe Tilsed Created: 09.02.2019 Last Updated: 10.02.2019

Python interface to the Google's Firebase REST APIs

Installation

Python Version

Firebase was written for python 3 and above and will not work correctly with python 2.

Add Firebase to your Application

Your Google's Firebase configuration data can be found on Firebase > Settings > Project Settings Scroll to bottom > Add to web app > config

For use with only user based authentication we can create the following configuration:

You can optionally add a service account credential to ourconfiguration that will allow your server to authenticate with Firebase as an admin and disregard any security rules.

Adding a service account will authenticate as an admin by default for all database queries, check out theAuthentication documentation for how to authenticate users.

Use Services

A firebase app can use multiple Firebase services.

firebase.auth() - Authentication

firebase.database() - Database

firebase.storage() - Storage

Check out the documentation for each service for further details.

Authentication

The sign_in_with_email_and_password() method will return user data including a token you can use to adhere to security rules.

Each of the following methods accepts a user token: get(), push(), set(), update(), remove() and stream().

Token expiry

A user's idToken expires after 1 hour, so be sure to use the user's refreshToken to avoid stale tokens.

Custom tokens

You can also create users using custom tokens, for example:

You can also pass in additional claims.

You can then send these tokens to the client to sign in, or sign in as the user on the server.

Manage Users

Creating users

Note: Make sure you have the Email/password provider enabled in your Firebase dashboard under Auth -> Sign In Method.

Verifying emails

Sending password reset emails

Get account information

Refreshing tokens

Database

You can build paths to your data by using the child() method.

Save Data

push

To save data with a unique, auto-generated, timestamp-based key, use the push() method.

set

To create your own keys use the set() method. The key in the example below is 'Joe'.

update

To update data for an existing entry use the update() method.

remove

To delete data for an existing entry use the remove() method.

multi-location updates

You can also perform multi-location updates with the update() method.

To perform multi-location writes to new locations we can use the generate_key() method.

Retrieve Data

val

Queries return a FirebaseResponse object. Calling val() on these objects returns the query data.

key

Calling key() returns the key for the query data.

each

Returns a list of objects on each of which you can call val() and key().

get

To return data from a path simply call the get() method.

shallow

To return just the keys at a particular path use the shallow() method.

Note: shallow() can not be used in conjunction with any complex queries.

streaming

You can listen to live changes to your data with the stream() method.

You should at least handle put and patch events. Refer to 'Streaming from the REST API' for details.

You can also add a stream_id to help you identify a stream if you have multiple running:

close the stream

Complex Queries

Queries can be built by chaining multiple query parameters together.

This query will return the first three users ordered by name.

order_by_child

We begin any complex query with order_by_child().

This query will return users ordered by name.

equal_to

Return data with a specific value.

This query will return users with a score of 10.

start_at and end_at

Specify a range in your data.

This query returns users ordered by score and with a score between 3 and 10.

limit_to_first and limit_to_last

Limits data returned.

This query returns the first five users ordered by score.

order_by_key

When using order_by_key() to sort your data, data is returned in ascending order by key.

order_by_value

When using order_by_value(), children are ordered by their value.

Storage

The storage service allows you to upload images to Firebase.

child

Just like with the Database service, you can build paths to your data with the Storage service.

put

The put method takes the path to the local file and an optional user token.

download

The download method takes the path to the saved database file and the name you want the downloaded file to have.

get_url

The get_url method takes the path to the saved database file and returns the storage url.

Helper Methods

generate_key

db.generate_key() is an implementation of Firebase's key generation algorithm.

See multi-location updates for a potential use case.

sort

Sometimes we might want to sort our data multiple times. For example, we might want to retrieve all articles written between acertain date then sort those articles based on the number of likes.

Currently the REST API only allows us to sort our data once, so the sort() method bridges this gap.

Common Errors

Index not defined

Indexing is not enabled for the database reference.

# That's all folks..

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