graph_models style per app

[ahmad88me]

Idea

Style the generated model per app.

use case

Imagine you're working on a Django project composed of two distinct applications, namely 'app1' and 'app2'. These applications are interconnected, with models in each app having relationships not only within the same app but also across the two apps. To effectively visualise these intricate relationships, you're aiming to generate a comprehensive graph model. This graph will not only illustrate the internal model structures within each individual app but will also clearly depict the inter-app model relationships. The goal is to have a single, unified graphical representation that vividly differentiates the models of 'app1' and 'app2', while simultaneously showcasing the connections between them. Such a visual tool would be invaluable for understanding the complex architecture of your Django project at a glance.

How to use it

You can either have a .app-style.json or you can specify the style file using the --app-style option. It takes a path to the style file. The style file is a json file which has the app name as the key and the style as the value. Here is a sample one:

{
  "app1": {"bg": "#341b56"},
  "django.contrib.auth": {"bg": "#561b4c"},
  "app2":{"bg": "#1b3956"}
}

Further, I updated the django style to support the background change. So in the future, this can easily be extended to more styles (e.g., color, font, ..., etc.)