Django community: RSS
This page, updated regularly, aggregates Community blog posts from the Django community.
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Django lock decorator with django-redis
Here's the code. It's quick-n-dirty but it works wonderfully: import functools import hashlib from django.core.cache import cache from django.utils.encoding import force_bytes def lock_decorator(key_maker=None): """ When you want to lock a function from more than 1 call at a time. """ def decorator(func): @functools.wraps(func) def inner(*args, **kwargs): if key_maker: key = key_maker(*args, **kwargs) else: key = str(args) + str(kwargs) lock_key = hashlib.md5(force_bytes(key)).hexdigest() with cache.lock(lock_key): return func(*args, **kwargs) return inner return decorator How To Use It This has saved my bacon more than once. I use it on functions that really need to be made synchronous. For example, suppose you have a function like this: def fetch_remote_thing(name): try: return Thing.objects.get(name=name).result except Thing.DoesNotExist: # Need to go out and fetch this result = some_internet_fetching(name) # Assume this is sloooow Thing.objects.create(name=name, result=result) return result That function is quite dangerous because if executed by two concurrent web requests for example, they will trigger two "identical" calls to some_internet_fetching and if the database didn't have the name already, it will most likely trigger two calls to Thing.objects.create(name=name, ...) which could lead to integrity errors or if it doesn't the whole function breaks down because it assumes that there is only 1 or 0 of these Thing … -
Comparing AWS vs Azure vs Google Cloud Platforms For Enterprise App Development
Enterprise companies around the world have made the switch from self-hosted infrastructure to public cloud configurations. While most enterprises will always need some on-premise technology, they are developing their applications directly in the cloud. This allows the development teams to stay product focused, rather than having to work on the infrastructure to support the application. By moving to the cloud, enterprises have an existing physical infrastructure that is continuously maintained and updated. This gives them more resources and time to dedicate to the mobile app development project at hand. The post Comparing AWS vs Azure vs Google Cloud Platforms For Enterprise App Development appeared first on Distillery. -
Comparing AWS vs Azure vs Google Cloud Platforms For Enterprise App Development
Enterprise companies around the world have made the switch from self-hosted infrastructure to public cloud configurations. While most enterprises will always need some on-premise technology, they are developing their applications directly in the cloud. This allows the development teams to stay product focused, rather than having to work on the infrastructure to support the application. By moving to the cloud, enterprises have an existing physical infrastructure that is continuously maintained and updated. This gives them more resources and time to dedicate to the mobile app development project at hand. The post Comparing AWS vs Azure vs Google Cloud Platforms For Enterprise App Development appeared first on Distillery. -
Django vs WordPress: How to decide?
In the early stages of a web development project, your first step is a big decision: what’s the right tool for the job? What kind of software makes the most sense for me? A lot of our clients come to us at this stage, seeking advice on how to approach this decision. And it’s an important one: once you invest in a particular platform, the cost to switch later may be high. You’ll want to make sure you have all the info before making your decision. Should you use WordPress or Django? To answer that question, I first need to explain what each of these systems are because we’re actually talking apples and oranges, or maybe apples and fruit salads. When people say WordPress, they’re referring to the content management system (CMS) that’s used to create and upload the website content. Basically, WordPress is the dashboard through which you organize text and images to display on your website. WordPress is built using the PHP programming language. Django, on the other hand, is what’s called a web framework. Built on the powerful Python programming language, it’s a set of tools and libraries that can be rapidly deployed to build custom web … -
Django vs WordPress: How to Decide?
In the early stages of a web development project, your first step is a big decision: what’s the right tool for the job? What kind of software makes the most sense for me? -
How to customize the admin actions in list pages of Django admin?
Django by default provides automatic admin interface, that reads metadata from your models to provide a beautiful model interface where trusted users can manage content on your site. The admin is enabled in the default project template used by startproject so we don't need to worry of the settings. By default the model won't get displayed in the admin panel, to make the models of our application visible in the admin panel we have to regsiter the models in admin.py with admin. In models.py STATUS_CHOICES = ( ('d', 'Draft'), ('p', 'Published'), ('r', 'Review'), ('t', 'Trash'), ) class BlogPost(models.Model): title = models.CharField(max_length=100) content = models.TextField() status = models.CharField(max_length=1, choices=STATUS_CHOICES) created_date = models.DateTimeField(auto_now_add=True) def __str__(self): return self.title In admin.py admin.site.register(BlogPost) Customizing the admin actions: When we register our app with the admin we’ll see the table in the admin panel. By default it will come with ‘delete selected’ action in the list page. Now we want to add some actions like Publish the selected posts or Draft the selected posts. then we would be override the ModelAdmin and write our … -
django-html-validator now supports Django 2.x
django-html-validator is a Django project that can validate your generated HTML. It does so by sending the HTML to https://html5.validator.nu/ or you can start your own Java server locally with vnu.jar from here. The output is that you can have validation errors printed to stdout or you can have them put as .txt files in a temporary directory. You can also include it in your test suite and make it so that tests fail if invalid HTML is generated during rendering in Django unit tests. The project seems to have become a lot more popular than I thought it would. It started as a one-evening-hack and because there was interest I wrapped it up in a proper project with "docs" and set up CI for future contributions. I kinda of forgot the project since almost all my current projects generate JSON on the server and generates the DOM on-the-fly with client-side JavaScript but apparently a lot of issues and PRs were filed related to making it work in Django 2.x. So I took the time last night to tidy up the tox.ini etc. and the necessary compatibility fixes to make it work with but Django 1.8 up to Django 2.1. … -
How to Use Bootstrap 4 Forms With Django
This is a quick tutorial to get you start with django-crispy-forms and never look back. Crispy-forms is a great application that gives you control over how you render Django forms, without breaking the default behavior. This tutorial is going to be tailored towards Bootstrap 4, but it can also be used with older Bootstrap versions as well as with the Foundation framework. The main reason why I like to use it on my projects is because you can simply render a Django form using `` and it will be nicely rendered with Bootstrap 4, with very minimal setup. It’s a really life saver. Installation Install it using pip: pip install django-crispy-forms Add it to your INSTALLED_APPS and select which styles to use: settings.py INSTALLED_APPS = [ ... 'crispy_forms', ] CRISPY_TEMPLATE_PACK = 'bootstrap4' Setup Bootstrap You can either download the latest Bootstrap 4 version at getbootstrap.com. In that case, go to download page and get the Compiled CSS and JS version. Or you can use the hosted Bootstrap CDN: <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous"> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script> For simplicity, I will be using the CDN version. Here is my base.html template that will be referenced in the following examples: <!doctype … -
How to Build a Unique Technology for Your Fintech Product with Python
Fintech is a maze. It’s a thrilling and extremely complex industry for software development. There are state level regulations, integrations with different services and institutions, bank API connections, etc. to deal with. Another challenge is the high level of trust from the end users required to run finance, mortgages, investments and such. These, in turn, require the highest level of security, functionality, and correspondence with requirements. What I’m trying to say is that the more unique the software is, the higher it’s valued. Without a properly working and trustworthy software, any financial venture will die down and lose worth. People need financial technology that will last, and I’m going to tell you how we achieved this with Python/Django technological stack while developing fintech products. It’s especially pleasant to say after Python has become the world’s most popular coding language. Fintech: The Importance of Being Unique In the world of finance, there are two streams that still coexist. On one hand, there are the millennials who stride gloriously into the future while mastering contactless payments, using on-line banking and all kinds of digital financing services. In an effort to avoid old school bureaucracy, they build their lives in a way that … -
4 Strategies for Integrating Voice Technology into Your Business
In the world of business, voice technology holds astonishing potential. It can transform how your people work, or how your customers interact with your business or buy your products. Smart businesses are starting to think about how they can use voice to improve their operations or their customer experience. The post 4 Strategies for Integrating Voice Technology into Your Business appeared first on Distillery. -
4 Strategies for Integrating Voice Technology into Your Business
In the world of business, voice technology holds astonishing potential. It can transform how your people work, or how your customers interact with your business or buy your products. Smart businesses are starting to think about how they can use voice to improve their operations or their customer experience. The post 4 Strategies for Integrating Voice Technology into Your Business appeared first on Distillery. -
Individual member of the Django Software Foundation
Last Saturday, somewhen late at night when we came back home from our trip to the city, I received an unexpected mail. I was nominated, seconded and approved to be an Individual Member of the Django Software Foundation. This came completely unexpected and honestly caught me a bit off guard. I let it sink in a bit and accepted the invitation on Sunday, with a nice glass of scotch next to me. I have been using Django since 0.96-svn or so and I have been using it to ship production software for a decade. (Yes, I was actually crazy enough to bet on a pre 1.0 release framework instead of TurboGears which was a bit more established, had a nicer ORM and some really nice JavaScript integration.) During all those years I experienced a warm, welcoming and inclusive community that is also able to talk tech. This is a very nice combination. I have seen communities which are also welcoming and inclusive but lacked the technical capabilities to drive a project forward. And I have seen technical capable communities I would not want to spent five minutes with in a room full of liquor. Django was and still is the … -
Individual member of the Django Software Foundation
Individual member of the Django Software Foundation Last Saturday, somewhen late at night when we came back home from our trip to the city, I received an unexpected mail. I was nominated, seconded and approved to be an Individual Member of the Django Software Foundation. This came completely unexpected and honestly caught me a bit off guard. I let it sink in a bit and accepted the invitation on Sunday, with a nice glass of scotch next to me. I have been using Django since 0.96-svn or so and I have been using it to ship production software for a decade. (Yes, I was actually crazy enough to bet on a pre 1.0 release framework instead of TurboGears which was a bit more established, had a nicer ORM and some really nice JavaScript integration.) During all those years I experienced a warm, welcoming and inclusive community that is also able to talk tech. This is a very nice combination. I have seen communities which are also welcoming and inclusive but lacked the technical capabilities to drive a project forward. And I have seen technical capable communities I would not want to spent five minutes with in a room full of … -
Hackathon 2018: Kegerator 2—Revenge of the Flowmeter
Hackathon 2018: Kegerator 2—Revenge of the Flowmeter Morgan Senkal Wed, 08/01/2018 - 21:25 Read more about Hackathon 2018: Kegerator 2—Revenge of the FlowmeterAdd new comment If you’re going to spend two long days frying a Raspberry Pi and fiddling with (very) finicky electronics, is there any better way to do it than surrounded by beer? -
Congratulations to NetCloak on Joining the Techstars LA Class of 2018!
Congratulations to NetCloak on their acceptance into the Techstars LA startup accelerator program! In this week’s announcement, the tech incubator lauded the incredible breadth and depth of talent in the local startup ecosystem. Having had the chance to work with NetCloak’s impressive leadership team and staff first-hand, we agree that the forward-looking enterprise cybersecurity startup is a fantastic addition to Techstars LA’s Class of 2018. The post Congratulations to NetCloak on Joining the Techstars LA Class of 2018! appeared first on Distillery. -
Congratulations to NetCloak on Joining the Techstars LA Class of 2018!
Congratulations to NetCloak on their acceptance into the Techstars LA startup accelerator program! In this week’s announcement, the tech incubator lauded the incredible breadth and depth of talent in the local startup ecosystem. Having had the chance to work with NetCloak’s impressive leadership team and staff first-hand, we agree that the forward-looking enterprise cybersecurity startup is a fantastic addition to Techstars LA’s Class of 2018. The post Congratulations to NetCloak on Joining the Techstars LA Class of 2018! appeared first on Distillery. -
Configurer les représentations textuelles qui seront utilisées dans les ChoiceField des forms Django.
Longtemps que je n’avais pas posté de billets dans cette partie du blog. (Vous allez me dire longtemps que je n’ai pas posté de billet tout court, et vous auriez raison, mais ma bonne résolution de fin de vacances d’été est de changer cela). Mais donc, pour reprendre doucement dans la partie technique, je vais commencer par partager un truc que tout le monde connaît sûrement déjà. Sauf que perso, j’oublie à chaque fois que cette fonctionnalité de django existe et donc je galère pour la retrouver. Du coup je me dis qu’en l’écrivant je finirais par la mémoriser (et donc en fait j’écris plus pour moi qu’autre chose, je suis un vilain !:) ). Donc imaginons que vous avez un modèle. Truc assez classique. Ce modèle vous lui avez défini une représentation textuelle de base avec str . Sauf que vous avez plusieurs forms, donc certains ont des ChoiceFields utilisant ce modèle (Exemple un modèle User et vous avez un modèle Post où vous devez choisir le rédacteur du billet). Et manque de chance, vous avez besoin d’une représentation textuelle différentes de celle de base pour un de vos forms. Où même pire, vous avez besoin de plusieurs représentations … -
Understanding the User Experience: Why It’s Time to Get Comfortable with Talking About Emotions
When we discuss the “user experience,” or UX, as it is commonly known, words such as prototype, pain points, A/B testing, information architecture, wireframes, and site map get thrown around. However, it’s likely that neither you nor your users are familiar with these terms and concepts. The post Understanding the User Experience: Why It’s Time to Get Comfortable with Talking About Emotions appeared first on Distillery. -
Understanding the User Experience: Why It’s Time to Get Comfortable with Talking About Emotions
When we discuss the “user experience,” or UX, as it is commonly known, words such as prototype, pain points, A/B testing, information architecture, wireframes, and site map get thrown around. However, it’s likely that neither you nor your users are familiar with these terms and concepts. The post Understanding the User Experience: Why It’s Time to Get Comfortable with Talking About Emotions appeared first on Distillery. -
My Todoist Setup
What is this?Like a lot of others my first experience with todo managers was actually Wunderlist. At the time I was a college student and it was great for helping keep track of projects and other assignments. I never really dove to deep into GTD or any real kind of process then. It was just a bunch of tasks messily thrown in one project with dates attached. As college went on and I started freelancing I quickly realized I needed more help. That's when I started working on this system.Why Todoist?Eventually Microsoft bought Wunderlist. A truly sad day for Wunderlist fans, as Microsoft has a slight history of destroying things they buy. This gave me a good reason to find a new todo manager though. I looked at everything available (and still spend to much time looking at new ones now!), but finally settled on Todoist Premium.I love Todoist minimal interface, managers like Any.do and Asana just had to much clutter. Todoist also offers a really brilliant input interface as well. When adding tasks to Todoist you can add information (Projects, tags, due date, priority, etc) about the task just by typing, no need for clicking or special key bindings! … -
Leaving Webfaction
When I was young Five years ago (2013), when I made my first steps on Web Development, building localhost (dummy) projects I never thought of deployment or security issues. That's the beauty of working locally. You think, write it down, convert it to code, run it and done. Job's done. But, I wanted to make my work available to the public. What's the point of building a house, decorate it, paint it but with no guests at all? The point is to share. To evolve. I was building (still do) Django-based websites and when the time had come to upload it somewhere I did a research. Few players on the board for Python applications. My best bet back then (with no knowledge about web servers, security, redirects, static files handling etc) was to rely on a shared hosting service. I had rejected virtual private services (VPS) since I had absolutely no idea about how to setup a server with a Django application. Remember, it was 5 years ago, Django was at 1.6 release (if I recall correctly), I was just learning HTML, CSS, JS, Git etc and I had my app ready to deploy. I wrote down on a paper … -
Web Development Tutorial: PHP vs. Python & Django
In this tutorial, we'll compare PHP and Python (Django) for web development then we'll see how to create simple demo apps with PHP and Python (using Django one of the most popular frameworks for Python). PHP is a programming languages which has a sole purpose to create back-end web applications while Python is a general purpose programming language that can be used for web development and other fields such as data science and scientific calculations so our comparison will be between PHP and Python equipped with a web framework. The most popular web frameworks for Python are Django and Flask with Django being more popular than Flask. In order to compare PHP with Django we need to consider many factors such as: Are your a beginner or experienced developer? Are looking for quick insertion in the job market? etc. More experienced developers have more potential to quickly learn a new programming language than beginners Both PHP and Python are popular languages. They are both extremely popular among web developers and power most of the websites on the web today. Let's take a look at these three factors: Popularity of PHP and Python with Django for web development The learning curve … -
Changing Default Python 3 in Terminal for Mac OS
Sometimes Python gets upgraded... -
Pipenv Virtual Environments for Python
`Pipenv` is an **amazing** rep... -
Equivalents in Python and JavaScript. Part 4
In the last three parts of the series of articles about analogies in Python and JavaScript, we explored lots of interesting concepts like serializing to JSON, error handling, using regular expressions, string interpolation, generators, lambdas, and many more. This time we will delve into function arguments, creating classes, using class inheritance, and defining getters and setters of class properties. Function arguments Python is very flexible with argument handling for functions: you can set default values there, allow a flexible amount of positional or keyword arguments (*args and **kwargs). When you pass values to a function, you can define by name to which argument that value should be assigned. All that in a way is now possible in JavaScript too. Default values for function arguments in Python can be defined like this: from pprint import pprint def report(post_id, reason='not-relevant'): pprint({'post_id': post_id, 'reason': reason}) report(42) report(post_id=24, reason='spam') In JavaScript that can be achieved similarly: function report(post_id, reason='not-relevant') { console.log({post_id: post_id, reason: reason}); } report(42); report(post_id=24, reason='spam'); Positional arguments in Python can be accepted using the * operator like this: from pprint import pprint def add_tags(post_id, *tags): pprint({'post_id': post_id, 'tags': tags}) add_tags(42, 'python', 'javascript', 'django') In JavaScript positional arguments can be accepted using …
