deleting an article does not delete the relationship with the category(ies) about gregory HOT 2 CLOSED

You need to add on_delete = models.CASCADE instead of models.DO_NOTHING while using the Foreign Key field attribute.
The object will get deleted once the related object is deleted.

from gregory.

Won't that also delete the category of the article ?

Right now we have a many to many relationship with an intermediate table, and we just want to delete the row with the article_id in the articles table and in the articles_categories_relation table. I'm questioning because I have very little experience with this and want to understand it a bit better before proceeding.

flowchart LR
  articles --> articles_categories_relation 
  articles_categories_relation --> categories

from gregory.