Elixir Engine

Examples

Elixir Phoenix LiveView

Building a LiveView App

Elixir Phoenix LiveView creates reactive UIs without JavaScript.

Introduction to Phoenix LiveView

Phoenix LiveView enables developers to create highly interactive, real-time web applications without the need for JavaScript. By leveraging WebSockets, LiveView allows for server-rendered HTML to be updated in real-time, providing a seamless user experience.

Setting Up a New Phoenix Project

Before you can start using LiveView, you'll need to set up a new Phoenix project. Make sure Elixir, Phoenix, and Node.js are installed on your machine.

The --live flag sets up your new Phoenix project with LiveView integrated by default.

Creating a LiveView Module

To create a new LiveView, you'll need to define a module that uses Phoenix.LiveView. Let's create a simple counter application.

In this example, the mount function initializes the state of the LiveView with a count of 0. The handle_event function listens for an increment event and updates the count accordingly.

Creating the LiveView Template

Next, we'll create an HTML template for our LiveView. This will define how the counter is displayed and how user interactions are handled.

The template includes a heading to display the count and a button that triggers the increment event when clicked.

Running Your LiveView Application

With your LiveView module and template in place, you can now run your Phoenix application. Start the server and navigate to the appropriate route to see your LiveView in action.

Visit http://localhost:4000 in your browser to interact with your new LiveView counter.

Conclusion

Phoenix LiveView offers a powerful way to build reactive, real-time applications without writing any JavaScript. By following the above steps, you can start leveraging LiveView in your own projects.

Examples

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