Here you can find an example of rendering graphic specification composed with the vega_lite package inside a phoenix_live_view web application.

git clone https://github.com/jonatanklosko/vega_lite_lv_example.git
cd vega_lite_lv_example

mix setup
mix phx.server

# Visit http://localhost:4000

All relevant code is encapsulated in this commit.

Note: when building with Webpack, make sure to use version 5 or higher to avoid build issues.

The rendering process goes as follows:

• we build a Vega-Lite specification using the vega_lite package
• the VegaLiteComponent renders an element with VegaLite hook and sends it the specification as an event
• the hook receives the specification and uses the vega-embed NPM package to render the actual graphic according to the provided specification