Gain insights into building real-time web apps with Phoenix LiveView. Learn about creating interactive code, building a game from scratch, and managing distributed real-time dashboards.

Programming Phoenix LiveView by The Pragmatic Programmer_468 x 60 copy.png

liveview.tar.gz

Installation

LiveView_Sockets

Simple_App

Wrong_Guess_Number

Plug_Conn

Wrong_Guess_Number-auth

Wrong_Guess_Number-auth-gen

Wrong_Guess_Number-auth-gen-final

Generator

Generator-ecto

Generator-ected

Generator-web-ected

Forms-ected

Forms

Stateless

Stateless-ected

Stateful

Stateful-ected

Dashboard

Dashboard-ected

Distributed_Dashboard

Distributed_Dashboard-ected

Unit_Test

Unit_Test-ected

Core-ected

Core

phoenix_start_server

phoenix_build_only

phoenix_build_only_pento

phoenix_build_intro

test

intro_build_ected

intro_build_server

auth_build_server

auth_build_ected

generate_web_build_ected

generate_web_build_server

generator_build_server

generator_build_ected

forms_build_server

setup

forms_build_edcted

interactive_build_server

interactive_build_ected

distributed_build_server

distributed_build_ected

stateless_build_server

stateless_build_ected

stateful_build_server

stateful_build_ected

test_build_server

test_build_ected

core_build_server

core_build_ected

graphics_build_server

graphics_build_ected

test_build_terminal

test_build_GUI

test_build_server-copy

test_build_server-copy-copy

test_build_server-chrome-fix

test_build_server-docker_fix

intro-tester

If you want to program just for the joy of creating, LiveView will be an excellent opportunity for you. This programming model keeps your brain firmly on the server and lets you explore one concept at a time. Layering on graphics makes this kind of exploratory programming almost magical.

Programmers learn by writing code, and that’s exactly how this course will work. We’ll work on a project together as if we’re a fictional game company. You’ll write lots of code, starting with small tweaks of generated code and building up to major enhancements that extract common features with components.

As you build the application, you’ll encounter more complexity. A distributed dashboard will show a real-time view of other users and processes. You’ll even build a game from scratch—because that’s the best way to learn how to layer the most sophisticated LiveView applications.

Building Real-Time Web Applications with Phoenix LiveView

Let’s integrate our `wrong_live` view with the authentication infrastructure. This quick test will let us make sure our infrastructure is working. When we’re done, we’ll understand how to protect authenticated LiveView routes and know how to identify the authenticated user in a LiveView.

We’ll start in the router by putting our live route behind authentication. Then, we’ll update our LiveView’s `mount/3` function to use the token from the session to find the logged-in user.

# How to protect sensitive routers

When we ran the generator earlier, a scope was added to our router containing the set of routes that require a logged-in user. The scope pipes requests to such routes through two pipelines: —the `browser` pipeline, which establishes the policy for web requests from browsers, and the generated `UserAuth.require_authenticated_user/2` function plug, which ensures that a current user is present, or else redirects to the sign-in page.

In order to authenticate our `wrong_live` view, we move the LiveView route into this pipeline in `pento/lib/pento_web/router.ex` like this:


Learn how to integrate authentication with a Phoenix LiveView.

How to Authenticate The Live View

Introduction

Phoenix and Authentication

Generators: Contexts and Schemas

Generators: Live Views and Templates

Forms and Changesets

Stateless Components

Stateful Components

Build an Interactive Dashboard

Build a Distributed Dashboard

Test Your Live Views

Build The Game Core

Render Graphics With SVG

Conclusion

Authenticate The Live View