Back
Sep 23, 2010

OR and AND without django.db.models.Q

I just found out that orand andare defined for QuerySet. This means that to do queries union or intersection, you can do:

User.objects.filter(...) | User.objects.filter(...)
User.objects.filter(...) & User.objects.filter(...)

Subscribe for the news and updates

More thoughts
Nov 27, 2024Technology
Stoicism At Work

This article explores how Stoic principles can be applied in the workplace to navigate stress, improve self-control, and focus on what truly matters, with practical examples from the author’s experience in software development.

Apr 11, 2024Technology
Test Analysis at the Feature Level

In the previous article, we learned about test analysis for a product in general, and now we are ready to go further and look at test analysis for specific features.

Jul 21, 2022Technology
Codemirror: unit-testing codemirror react components

One of our recent projects includes the functionality of an inline code editor. This code editor needed to be highly extensible and have custom features. To address this, we chose Codemirror v6 due to its peculiar architecture - it is highly customizable, and all the additional features are provided into codemirror engine as Extension objects.

May 12, 2022Technology
Increasing performance by using proper query structure

Earlier in our previous article "Improve efficiency of your SELECT queries" we discussed ways to profile and optimize the performance of SELECT queries. However, to write complex yet efficient SQL queries, there is a thing to remember about.

Apr 27, 2022TechnologyBusiness
How to Choose the Best Javascript Framework: Comparison of the Top Javascript Frameworks

In our article, you will find the best JavaScript framework comparison so that you know for sure how to choose the right one for your project.

Jan 12, 2017Technology
Making Custom Report Tables Using AngularJS and Django

In this article I will tell you how to create an interactive interface with a widely customized visual look and different filtering to view reports.