Django: Key (slug)=(*) Already Exists

I'm pretty new to Django and python and I'd like to learn more about how to populating my Postgres database. Here is my current model: models.py from django.template.defaultfilter

Solution 1:

When you provide unique=True, the field will be unique throughout the table. Hence, when you try to add a data which is already in DB, it will raise an error. See this official doc for more details