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
Feb 12, 2020Technology
5 Best Payment Gateways For 2020

We reviewed the best payment gateways in 2020. Here’s our comparison of their features, advantages, and disadvantages.

Feb 28, 2017Technology
Passing pieces of markup to components in Angular 2 and problems with dynamic content

In this article we'll research how to pass custom markup to Angular components and how to create different types of dynamic components.

Jan 22, 2017Technology
Django vs Rails Performance

This article is aimed for beginners, who are trying to choose between Ruby on Rails and Django. Let’s see which is fastest and why.

Jan 9, 2017Technology
How to Use GraphQL with Django

GraphQL is a very powerful library, which is not difficult to understand. GraphQL will help to write simple and clear REST API to suit every taste and meet any requirements.

Oct 22, 2016Technology
Solr Sharding

When dealing with one of our projects (LookSMI media monitoring platform) we have to handle the huge volume of data – and its quantity is constantly growing. At the same time, we must run quick searches with smart rules. In this article I'll explain how we have achieved required performance.

Mar 6, 2010Technology
Ajax form validation

There was a task to submit form with ajax, with server side validation of course. Obvious solution is to do validation and return json with erros. I didn't like idea of writing separate view for validation and then inserting errors in form html on client side. Especially since I already had a generic template for django form with errors display. In this article I'll describe how I solved the task.