Having correct grammar and punctuation on your website admin interface creates a professional impression and improves site usability. However, Django’s auto-generated admin sometimes displays plural model names incorrectly. Luckily, fixing this issue is straightforward with some customization. In this post, we’ll explore a simple method to correct Django admin plural names. The Problem-Admin Plural Name … Read more
A foreign key in Django sets up a many-to-one relationship between two models. It connects one model (the child) to another (the parent), allowing the child model to reference a specific record in the parent model. However, sometimes you need a model to reference itself. This is where self-referential foreign keys come in handy. What … Read more
Running unit tests is an integral part of developing with Django. Unit tests allow developers to verify that their code works as expected and catch regressions early. However, leaving logging enabled while running tests can slow things down significantly. In this post, we’ll explore some techniques for disabling logging in Django during test execution to … Read more
Defining the CORS Problem First, let’s outline the browser security policy that creates this issue. CORS is enforced by web browsers to prevent malicious sites from accessing resources on other sites without authorization. Therefore, when a web app served from example.com tries to access an API at api.example.com, the browser blocks the request unless the … Read more
Django South is a useful database migration library for Django projects. It allows you to evolve your database schema over time through a series of incremental migration files. However, sometimes you may need to perform a backwards migration if you make a mistake or want to revert to an earlier version. Luckily, South makes backwards … Read more
First and foremost, the 403 Forbidden response is an HTTP status code that means access to the requested resource is forbidden. Specifically, the server understood the request but refuses to authorize it. There are a few common cases where you may want to deliberately raise a 403 error in your Django application. Reasons to Raise … Read more
When you start up the development server in Django using the python manage.py runserver command, it will by default bind to port 8000 on the local machine. However, sometimes you may want to change this default port for various reasons. Luckily, Django makes it easy to customize the port used by the runserver command. Why … Read more
As developers build web applications with Django, they often need to work with dates and times stored in the database. Django makes this easy with the DateTimeField model field. However, to make the most of this data, developers need to know how to properly filter DateTimeFields in queries. In this post, we’ll explore some effective … Read more
Selecting the Records The first step is selecting the records you want to update from the database. Django provides a rich queryset API that makes it easy to filter down to the specific set of records needed. For example, if we had a BlogPost model, we could select all posts in the database by author … Read more
If you have created custom management commands for your Django project, you may want to test them directly instead of going through the command line interface. Calling commands programmatically from test code is straightforward in Django. This allows you to write automated tests for your custom commands to ensure they function as expected. In this … Read more
Django’s URL routing system allows you to define URL parameters as part of your URL patterns. By default, these parameters are required – if they are not provided, Django will return a 404 error. However, you can also make these parameters optional. Making URL parameters optional can make your URLs more flexible and improve the … Read more
Having multiple submit buttons in a Django form can be very useful for accomplishing different actions with the same set of data. For example, you may want a “Save Draft” button in addition to a “Publish” button for blog posts or other content. In this blog post, we will walk through a simple technique to … Read more
Django is a popular open-source web framework used by developers to build web applications quickly and efficiently. However, you may encounter the error “RuntimeError: populate() isn’t reentrant” when working with Django which stops things from functioning properly. In this blog post, we’ll explore the reasons for this runtime error and the steps you can take … Read more
Django’s template language provides a rich set of features for displaying data from your models and controllers. However, it does not have a direct way to get the length or size of a collection. In this post, we’ll explore a few different approaches to getting the size of a list, set, or other collection within … Read more
Django’s template language offers various effective methods to access and exhibit model instance data in templates. Frequently, there is a need to iterate through all fields or particular sets of fields within a model instance to showcase their values. This approach allows for a dynamic and programmatic rendering of model data. Nevertheless, executing this task … Read more
Django provides useful utilities for working with URLs in your Python code. Two particularly handy methods allow you to extract just the protocol (http vs https) or the host name from a full URL string. In this post, we’ll explore these functions and see examples of how to use urlsplit and get_host to get these … Read more
Django’s form rendering system facilitates seamless styling of forms through the incorporation of custom CSS classes. This not only grants enhanced control over the presentation layer but also enables extensive customization without necessitating alterations to the Python code. In the following discussion, we will delve into the diverse methods at your disposal for seamlessly appending … Read more
When building robust web applications with Django, understanding database relationships is crucial. One common scenario is the one-to-many relationship, where a single entity is associated with multiple related entities. In this blog post, we’ll delve into how to express such as relationships using Django models. Let’s explore the steps, best practices, and practical examples. Understanding … Read more
In the world of Django and relational databases, the choice between using “id” or “pk” in your queries can significantly impact the efficiency of your application. In this blog post, we’ll explore differences between these two options and help you make informed decisions for your Django projects. Understanding id and pk First, let’s clarify what … Read more
When working with Django, you’ll often encounter the mysterious nested Meta class within your model definitions. What exactly is it, and how does it impact your application? In this comprehensive guide, we’ll demystify the Meta class, explore its purpose, and discuss best practices. What is the Meta Class? Let’s break it down: Why Use the … Read more