Django 2 by Example

Using prefetch_related()

select_related() will help you boost performance for retrieving related objects in one-to-many relationships. However, select_related() cannot work for many-to-many or many-to-one relationships (ManyToMany or reverse ForeignKey fields). Django offers a different QuerySet method called prefetch_related that works for many-to-many and many-to-one relations in addition to the relations supported by select_related(). The prefetch_related() method performs a separate lookup for each relationship and joins the results using Python. This method also supports the prefetching of GenericRelation and GenericForeignKey.

Edit the views.py file of the application account and complete your query by adding prefetch_related() to it ...