Django: Adding Context Data to Class Based Views Using Properties

When using Class-Based Views in Django, we normally add additional context data to the view by implementing the get_context_data() method:

class MyDetailView(DetailView):

    def get_context_data(self, *args, **kwargs):
        context = super().get_context_data(*args, **kwargs)
        context['foo'] = 'bar'

        return context

This works well. But I am very fond of using another approach, so as to not pollute the get_context_data method. We can achieve this using properties:

Django: Custom Middleware for Alerting High Database Querying

In this post I will show you how you can implement a custom middleware that you can use in your development environment to monitor queries to the database in your views when developing Django applications.

Let's begin by creating a middleware.py file (a nice convention) where we will place our new middleware. The middleware is relatively simple and small, this is how it looks like:

Custom Admin Action Buttons in Django

In this post I will explain how you can add custom action buttons in the admin detail view of objects in the Django admin.

This is the final result we want to achieve:

These buttons can trigger custom actions that we want to perform on these objects.

Gracefully Exiting Python Context Managers on Ctrl+C

In this post I will show you how you can exit gracefully from within a context manager in your Python application.

Suppose that we provide a context manager that can be used as a session to perform certain tasks. When the context manager is closed, there is some cleanup work to be done. We want this to happen even when the user interrupts the program with Ctrl+C key.

This is how we can achieve that:

Python Log Messages With Dynamic Formatter Variables

In this post I will explain how it is possible to replace logger formatter variables with dynamic values. Take the following log message for example:

[2020-04-02 15:37:01] myapp INFO: Logged in successfully.

What if we wanted to add some additional data after the INFO part, but this data is dynamic, or is only available at runtime. Like a username or an app name for example.

Let's take a look at how to achieve this.