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
May 10, 2018Technology
How to Build a Cloud-Based Leads Management System for Universities

Lead management is an important part of the marketing strategy of every company of any size. Besides automating various business processes, privately-held organizations should consider implementing an IT solution that would help them manage their leads. So, how should you make a web-based leads management system for a University in order to significantly increase sales?

May 18, 2017Technology
Angular2: Development Tips and Trick

In this article we'll discuss some tricks you can use with Angular to make routing cleaner and improve SEO of your application.

Mar 3, 2017Technology
Flask vs Django. Which Is Better for Your Web App?

There are two most popular web frameworks in Python. There is the Django with lots of intelligent defaults and the Flask micro framework with complete freedom in the choice of modules. Let’s see, what django vs flask is in 2017.

Jan 28, 2017Technology
Creating a site preview like in slack (using aiohttp)

In this article we will write a small library for pulling metadata and creating a preview for a site just like Slack does.

Mar 4, 2011Technology
Css sprite generation

I've created this small sprite to create css sprites. It glues images from directory directory into single file and generates corresponding css.

Feb 28, 2010Technology
Composing multiple views in Django

In UNIX way, each view should solve single task. This is good idea, but sometimes we need to mix logic of different views on same page. Filter, sort, paginate, or, for example, add comment on product page. In this article I'll show how we can mix such multiple views.