Lessons about Django

The links, tools and tips our engineers and designers share with each other, one “today I learned” at a time.

lessons shared: 288
people sharing: 29
database started in: 2016

cheatsheetseries.owasp.org
Django REST Framework quick security tips
Website with the collection of all the cheat sheets of the project.
Dennys AzevedoAugust 4, 2023
stackoverflow.com
You can use a Q object (and more) inside a get_object_or_404 call
Renato VieiraAugust 3, 2023
pganalyze.com
PostgreSQL Partitioning in Django:
We walk through the different types of partitions available in Postgres and how to use the django-postgres-extra package to make partitioning happen in Django.
Rebeca SaraiMay 12, 2023
buttondown.email
Speeding up a Django view
How we cut the time to first byte of Buttondown's archive pages by 70% with select_related, defer, and fewer joins in a Django detail view.
Raí SiqueiraApril 27, 2023
suor.github.io
Ban 1+N in Django:
I always thought of 1+N as a thing that you just keep in your head, catch on code reviews or via performance regressions. This worked well for a long time, however, the less control we have over our …
Flavio JuvenalMarch 31, 2023
docs.djangoproject.com
Django templates has a built-in complex tag that regroups a list of alike objects by a common attribute called regroup. You can use the {% regroup %} tag to group the list of cities by country:
Rebeca SaraiMarch 22, 2023
docs.djangoproject.com
Django's bulk_create does not work with with child models in a multi-table inheritance scenario.
Elton MoraisMarch 16, 2023
Today I learned
TIL: if you need to use both override_flag (django-waffle) and either django_assert_num_queries (pytest-django) or assertNumQ...
TIL: if you need to use both override_flag (django-waffle) and either django_assert_num_queries (pytest-django) or assertNumQueries (django testcase), make sure to have override_flags being put first or you'll end up tainting your number of queries assertion with those from flag value override
Carlos CoelhoFebruary 9, 2023
hakibenita.com
Cheatsheet to grouping queries in Django
Tulio LagesJanuary 5, 2023
docs.djangoproject.com
Django Field Deconstruction
Raí SiqueiraDecember 26, 2022
stackoverflow.com
How to migrate models across apps in Django?
Flavio JuvenalDecember 23, 2022
stackoverflow.com
Django needs a GinIndex with OpClass + Upper to support fast queries with the icontains operator:
Flavio JuvenalOctober 28, 2022
stackoverflow.com
Using window functions on Django ORM
Renato VieiraJuly 7, 2022
github.com
django-pgtrigger provides primitives for configuring Postgres triggers on Django models without raw SQL in many cases:
Flavio JuvenalJune 13, 2022
github.com
django-axes a plugin for keeping track of suspicious login attempts for your Django based website and implementing simple brute-force attack blocking:
Rebeca SaraiJune 7, 2022

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Lessons about Django

Django REST Framework quick security tips

Django REST Framework quick security tips

You can use a Q object (and more) inside a get_object_or_404 call

You can use a Q object (and more) inside a get_object_or_404 call

PostgreSQL Partitioning in Django:

PostgreSQL Partitioning in Django:

Speeding up a Django view

Speeding up a Django view

Ban 1+N in Django:

Ban 1+N in Django:

Django templates has a built-in complex tag that regroups a list of alike objects by a common attribute called regroup. You can use the `{% regroup %}` tag to group the list of cities by country:

Django templates has a built-in complex tag that regroups a list of alike objects by a common attribute called regroup. You can use the `{% regroup %}` tag to group the list of cities by country:

Django's bulk_create does not work with with child models in a multi-table inheritance scenario.

Django's bulk_create does not work with with child models in a multi-table inheritance scenario.

TIL: if you need to use both override_flag (django-waffle) and either django_assert_num_queries (pytest-django) or assertNumQ...

TIL: if you need to use both override_flag (django-waffle) and either django_assert_num_queries (pytest-django) or assertNumQ...

Cheatsheet to grouping queries in Django

Cheatsheet to grouping queries in Django

Django Field Deconstruction

Django Field Deconstruction

How to migrate models across apps in Django?

How to migrate models across apps in Django?

Django needs a `GinIndex` with `OpClass` + `Upper` to support fast queries with the `icontains` operator:

Django needs a `GinIndex` with `OpClass` + `Upper` to support fast queries with the `icontains` operator:

Using window functions on Django ORM

Using window functions on Django ORM

django-pgtrigger provides primitives for configuring Postgres triggers on Django models without raw SQL in many cases:

django-pgtrigger provides primitives for configuring Postgres triggers on Django models without raw SQL in many cases:

django-axes a plugin for keeping track of suspicious login attempts for your Django based website and implementing simple brute-force attack blocking:

django-axes a plugin for keeping track of suspicious login attempts for your Django based website and implementing simple brute-force attack blocking:

Found it useful?
Let’s put it to work.

Lessons about Django

Django REST Framework quick security tips

You can use a Q object (and more) inside a get_object_or_404 call

PostgreSQL Partitioning in Django:

Speeding up a Django view

Ban 1+N in Django:

Django templates has a built-in complex tag that regroups a list of alike objects by a common attribute called regroup. You can use the {% regroup %} tag to group the list of cities by country:

Django's bulk_create does not work with with child models in a multi-table inheritance scenario.

TIL: if you need to use both override_flag (django-waffle) and either django_assert_num_queries (pytest-django) or assertNumQ...

Cheatsheet to grouping queries in Django

Django Field Deconstruction

How to migrate models across apps in Django?

Django needs a GinIndex with OpClass + Upper to support fast queries with the icontains operator:

Using window functions on Django ORM

django-pgtrigger provides primitives for configuring Postgres triggers on Django models without raw SQL in many cases:

django-axes a plugin for keeping track of suspicious login attempts for your Django based website and implementing simple brute-force attack blocking:

Found it useful? Let’s put it to work.

Django templates has a built-in complex tag that regroups a list of alike objects by a common attribute called regroup. You can use the `{% regroup %}` tag to group the list of cities by country:

Django needs a `GinIndex` with `OpClass` + `Upper` to support fast queries with the `icontains` operator:

Found it useful?
Let’s put it to work.