Here's the real-life case. On this blog, I have two models: `Post` and `PostStats`. The former is, as you might have guessed, for posts, while the latter is for per …

A lot of fog and mysteries surround Python virtual environments. There are loads of packages, tools, and wrappers trying to make developer's life with virtual environmen…

Let's say we have an element: ```html Click me ``` And we want to check if the element has the `active` class. Here's how to do this in two simple steps. #…

Picture this: you have a fork (***origin***) of a GitHub repo (***upstream***). You submitted a PR from ***origin*** to ***upstream*** and then, ***upstream*** contribut…

I've played and worked with multiple programming languages over my 15-year long career in development (and a bit before, when I studied at school and university). Every …

I've been working with the Django cache recently. And while Django has exceptional caching capabilities, I was surprised to find out that it doesn't provide a simple way…

Are you getting a `ReferenceError: primordials is not defined` error message when trying to run **gulp**? Chances are you're on `gulp v3` and `node v12`, and that's the …

If you're on Dokku and after executing `dokku letsencrypt ` you get an error that looks like this: ```bash ACME server returned an error: urn:acme:error:unauthorized…

Django's request object has a nifty little method `is_ajax`. It allows determining whether a request comes from a JS framework (aka old-school ajax). While it works fine…

Let's say I want to remove the **User** menu item from Wagtail settings menu. All I need to do is to put this hook into `wagtail_hooks.py` file of my Wagtail CMS app:…

Are you swearing at mailgun now? Have you smashed your keyboard already? Do you keep receiving the `Domain not found: domainname.com` error although you're 100% sure you…

Are you staring at a pesky *"Uncaught ReferenceError: ga is not defined"* console error message right now? Yeah, I feel your pain, I've just lost two hours of my life…

[Storybook](https://github.com/storybookjs/storybook) has **"Info addon"** that shows additional information for your stories. It's handy when you want to display the st…

This command works on both Linux and Mac: ```bash grep -Rl --include \*.py 'search_vector' ./ ``` In my case I'm looking for *'search_vector'* text in my python …

```javascript const getDaysInMonth = date => new Date(date.getFullYear(), date.getMonth() + 1, 0).getDate(); getDaysInMonth(new Date(2019, 1)); // 28 days in Febr…