James Bennett - Django in Depth - PyCon 2015

"Speaker: James Bennett
This is a tutorial that goes beyond most tutorials; it's meant for developers who already know a bit about Django and want to really understand the inner guts of the framework. This tutorial will not involve writing code or apps; rather, it'll be a deep tour of the workings and APIs of Django itself, across all the bundled components and at all levels of the stack.
Slides can be found at: speakerdeck.co... and github.com/PyC..."

[@sssswwwwllll]

0:00:00 Introduction 0:00:30 Recommended audience 0:00:54 Introduction of speaker 0:01:36 Introduction of the talk 0:03:49 ORM 0:05:08 __ DB Backend 0:06:10 ______ DatabaseWrapper 0:07:19 ______ DatabaseOperations 0:08:04 ______ DatabaseFeatures 0:08:47 ______ DatabaseCreation 0:09:12 ______ DatabaseIntrospection 0:10:44 ______ DatabaseSchemaEditor 0:11:16 ______ DatabseClient 0:11:35 ______ Should you write a DB Backend? 0:12:21 ______ DB Backend Q&A 0:13:21 __ SQL Compiler 0:17:09 __ Query 0:22:19 ______ Query Expression and Function 0:31:00 __ QuerySet 0:37:30 ______ QuerySet Useful Methods 0:47:12 __ Managers 0:51:48 __ Models 0:52:34 ______ Model Metaclass 0:56:59 ______ Model Fields 1:00:42 ______ Model Inheritance 1:00:19 __________ Abstract Models 1:02:44 __________ Multi_Table Inheritance 1:03:40 __________ Proxy Models 1:00:00 ______ Unmanaged Models 1:07:19 ______ Models Q&A 1:07:44 Forms Library 1:08:46 __ Widgets 1:11:00 __ Fields 1:17:40 __ Forms 1:30:08 __ ModelForm 1:36:12 __ Form Media 1:39:24 __ Forms Q&A 1:44:44 Template System 1:45:56 __ Template Engines 1:47:16 __ Template Loaders 1:50:27 __ Template Objects 2:00:00 __ The Django Template Language 2:01:18 __ Template Context 2:04:51 __ RenderContext 2:08:05 __ Template Q&A 2:14:00 Request and Response Processing 2:28:26 Views 2:35:04 Q&A 2:43:23 Extra: Django Admin (code) 2:52:38 Extra: Django Admin (slides)

[@some84884]

Wow, thank you a lot!

[@MagnusAnand]

Thanks. Much needed

[@definty]

Django Template Language at 1:00:00 should be 2:00:00 Thanks for your time :)

[@mimmyjau]

thank you

[@DeepSukhwani]

For me, this was probably the best explanation of N+1 problem in ORMs and how Django solves it using `select_related` - exactly at 42:47

[@MagnusAnand]

Around 2:15:18 James mentions that the only entry point Django supports is WSGI. It´s important to mention that today Django supports also ASGI

[@MagnusAnand]

* ASGI: An entry-point for ASGI-compatible web servers to serve your project. See How to deploy with ASGI for more details. * WSGI: An entry-point for WSGI-compatible web servers to serve your project. See How to deploy with WSGI for more details.

[@RosanaRuFer]

This is really good 😮Great content, structure and delivery. Who can talk so clearly for three hours about the Django ORM internals?

[@renaton3992]

This guy realy knows django...

[@guinsly2mondesir]

This talk is so usefull!!! thanks James Bennett !

[@aleksandrsamuraev5028]

Really helpfull video! Is there a book that also covers the internal implementation mechanisms well and explains why it did like in this video? Rather than being superficial like most of the current books about django... Thanks.

[@MagnusAnand]

awesome presentation!

[@addychavs822]

Truly Amazing 🙌

[@briandethloff2451]

At 35:28, the speaker mentions that QuerySet is lazy, pulls from a cache, etc. How do I re-execute the query? I'm currently having some problems with this on my site where the queries don't update until the user has started a new session. I only started having this issue when I switched my views from function to class-based. Thanks for the help and thanks for the material. I should comment that in the template, I iterate through the query, which he says at 37:11 should force a new query, but not in my case. Does the iteration have to occur in the view?

[@jesusmgw]

This talk: Looks like it's from 1995. It's actually from 2015. Is still useful in 2025.

[@armlocked1]

Slides: media.b-list.org/s/django-in-depth-2015.pdf

[@roshanmhatre8810]

Thank you for sharing 😊

[@smoothbeak]

Can anyone tell me in June 2018 if this video is still relevant as it's a few years old now? (In terms of how the Django code base has changed over the last three years)

[@mohamedtahafci]

Still Relevant even in 2019

[@macas-academy4712]

still relevant in 2020

[@pedrocampos6530]

@@macas-academy4712 thanks

[@kevinwang4573]

old got this guy.!!!LOL!!! thanks again!

[@pulkitagrawalCFA]

found thew talk to be useful even in 2023

[@mateuszkurowski4510]

Where are the slides?

[@armlocked1]

I found here: media.b-list.org/s/django-in-depth-2015.pdf

[@MagnusAnand]

Marcello Benigno thanks!

[@andreas_bergstrom]

This is like a slideshow of the API-docs. He should have used some illustrations.

[@engkortheng]

this guy got old

[@erikisidore8366]

+engkortheng old got this guy

[@wencesmoreno4912]

guy this old got

[@shashishekhar----]

got old guy this