To generate an image of django's models we will use the command:

python manage.py graph_models -a -g -o imagefile_name.png
# iamgefile_name.png will be the image generated
# https://django-extensions.readthedocs.io/en/latest/graph_models.html

In order to use the command graph_models we need to instal one of these library:

• pygraphviz

• pydot

I used Ubuntu to install the library and here there are the steps i followed:

For other operating system follow the official guide: pygraphviz.github.io/documentation/stable/i..

• sudo apt-get install graphviz graphviz-dev
• pip install pygraphviz
• pip install django-extensions
• add django_extensions to installed apps in settings.py

• python manage.py graph_models -a -g -o imagefile_name.png

If you use Docker here the steps:

• in your dockerfile use the following commands

RUN yes | apt-get install graphviz
RUN yes | apt-get install graphviz-dev

• in the requirements.txt file insert

django-extensions
pygraphviz

• add django_extensions to installed apps in settings.py

• docker-compose exec web python manage.py graph_models -a -g -o imagefile_name.png (web is one of my service in the docker-compose file)