Chaos Computer Club - archive feed

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Editing data in a production database is sometimes necessary. However, mistakes in running these queries can be disastrous. In this talk, you will learn strategies for making edits to a production database with examples from a Python stack that increase safety and auditability. At some point, we all find ourselves at a SQL prompt making edits to the production database. We know it’s a bad practice...

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Ever wondered about being your own boss? Then this talk is for you. Good experience, bad experience: I’ve had some of both as a startup founder and freelancer in the 23 years after I left my last salaried job. Let me share them with you. Whether you love your job or hate it, at some time you’ve probably wondered what it would be like to work for your self. Maybe you’re working on a sideproject and...

This summer... a story of learning. She came from a different world, and must understand her new surrounds. Follow her on a journey of self discovery as she learns about... the Django ORM, via SQL. Django tutorials often use the perspective of a complete newcomer to Python and web development, and while they provide a good practical on-ramp for brand new developers, they are often not quite right...

Das geplante neue Polizeigesetz NRW fügt sich ein in die immer länger werdende Liste von verschärften Polizeigesetzen. Bayern macht es vor, und NRW zieht nach. Weitere Länder werden folgen. Unter dem Vorwand der Terrorbekämpfung wird mit dem Rechtsbegriff des "drohenden Gefährders" die Gedankenpolizei eingeführt. Menschen können ohne Schuldnachweis wochenlang eingesperrt werden. Die Polizei darf D...

In this talk, I’ll explain the fundamental problem representing deep hierarchies in relational databases. To address this problem, we can use a database design pattern, named Materialized Path Trees. Many data structures require a representation, where one parent node can have any arbitrary number of children. Inside relational databases, this typically is represented by a foreign key onto its own...

How can packaging Django projects make deployments easier, faster and more reliable? Deployments of Django projects can be a challenging task. Beside the Python source code itself you usually have to handle a lot of other stuff: * Installing Python dependencies * Shipping JavaScript code and installing it's dependencies * Compiling SCSS to CSS * Collecting static files * Building documentation * C...

Increasingly, our apps are used not by humans but by other apps - via their APIs. Thus it is increasingly important that your APIs are well-designed and easy to consume for other developers. I will share tips and good practices on authentication, versioning, documentation, response structure, and why it all matters. Adding a few API endpoints to your application for internal consumption is easy. C...

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Django ORM has lots of resources for making complex database queries and the documentation brings good examples on how to apply each one of them, but understanding how to orchestrate all of those resources on real-life projects may not be so simple. My goal with this talk is to show through examples how to combine some of the QuerySet Methods, Query Expressions and other optimization techniques to...

Since the introduction of Channels, real time web has become much easier to work with in Django: discover how you can easily create yours with Django! Since the introduction of Channels, real time web has become much easier to work with in Django. It’s now possible to build real time applications with much less effort in managing the idiosyncrasies of the async programming and a lot of batteries a...

Accessibility is an afterthought to many, but to those with issues navigating the web it's very important. We will go over examples of accessibility on the web, short and long term solutions, and talk about why accessibility matters to a variety of users. The audience should leave with the ability to spot some accessibility issues and the knowledge of how to fix them. Accessibility is a huge topic...

Welcome to DjangoCon Europe 2018! Welcome to DjangoCon Europe 2018! about this event: https://c3voc.de

Web tooling for data analysis requires, at its heart, a way to select the data a user want's to analyze. This talk shows how you can use forms to pass data among pages, retain the selected form elements through the request/response cycle and build web interfaces that utilize forms while looking like simple link elements. I will also show how I use my [django-modelqueryform](https://django-modelque...

Product makers have a biased view of the world, and this translates to biased algorithms. How can we take this into account, and create a fairer world though fairer algorithms? Even though Apple's Siri came out with a built-in response to where to hide a body, it was incapable of pointing a user to an abortion clinic. How did an Artificial Assistant get iffy about abortion? And how can I stop my o...

We’re heading into a future of delivery drones, driverless cars and 3D-printed “hoverboards” … With machines now able to perform many tasks better than humans, some people are going to be out of a job. But not software developers, right?! Could a computer generate the code you currently write for a living? In this talk, we’ll take a look at how technology is changing the work that people do, and t...

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about this event: https://c3voc.de

about this event: https://c3voc.de

about this event: https://c3voc.de

about this event: https://c3voc.de