Django community: RSS
This page, updated regularly, aggregates Community blog posts from the Django community.
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Data Warehouse vs. Data Lake: Which Is Right for Your Enterprise App Development Effort?
So you’re building an app for your enterprise. While your primary purpose for building that app may take countless forms, that purpose is at least partly driven by the desire to collect and store “big data” that can be translated into business intelligence (BI). Why? BI allows you to translate your data into actionable information that helps you drive better business decisions. The post Data Warehouse vs. Data Lake: Which Is Right for Your Enterprise App Development Effort? appeared first on Distillery. -
Our Little Scoop
Last month we welcomed a little scoop to the family. Here is our daughter Uma. She has been eating ice cream since before she was born. She's our only child, and we love her so much. -
Our Little Scoop
Last month we welcomed a little scoop to the family. Here is our daughter Uma. She has been eating ice cream since before she was born. She's our only child, and we love her so much. -
How to Export Data to XLSX Files
A while ago I wrote an article about exporting data to different spreadsheet formats. As recently I was reimplementing export to Excel for the 1st things 1st project, I noticed that the API changed a little, so it's time to blog about that again. For Excel export I am using the XLSX file format which is a zipped XML-based format for spreadsheets with formatting support. XLSX files can be opened with Microsoft Excel, Apache OpenOffice, Apple Numbers, LibreOffice, Google Drive, and a handful of other applications. For building the XLSX file I am using openpyxl library. Installing openpyxl You can install openpyxl to your virtual environment the usual way with pip: (venv) pip install openpyxl==2.6.0 Simplest Export View To create a function exporting data from a QuerySet to XLSX file, you would need to create a view that returns a response with a special content type and file content as an attachment. Plug that view to URL rules and then link it from an export button in a template. Probably the simplest view that generates XLSX file out of Django QuerySet would be this: # movies/views.py from datetime import datetime from datetime import timedelta from openpyxl import Workbook from django.http … -
Our Little Scoop
Last month we welcomed a little scoop to the family. Here is our daughter Uma. She has been eating ice cream since before she was born. She's our only child, and we love her so much. -
How to Export Data to XLSX Files
A while ago I wrote an article about exporting data to different spreadsheet formats. As recently I was reimplementing export to Excel for the 1st things 1st project, I noticed that the API changed a little, so it's time to blog about that again. For Excel export I am using the XLSX file format which is a zipped XML-based format for spreadsheets with formatting support. XLSX files can be opened with Microsoft Excel, Apache OpenOffice, Apple Numbers, LibreOffice, Google Drive, and a handful of other applications. For building the XLSX file I am using openpyxl library. Installing openpyxl You can install openpyxl to your virtual environment the usual way with pip: (venv) pip install openpyxl==2.6.0 Simplest Export View To create a function exporting data from a QuerySet to XLSX file, you would need to create a view that returns a response with a special content type and file content as an attachment. Plug that view to URL rules and then link it from an export button in a template. Probably the simplest view that generates XLSX file out of Django QuerySet would be this: # movies/views.pyfrom datetime import datetimefrom datetime import timedeltafrom openpyxl import Workbookfrom django.http import HttpResponsefrom .models import … -
Guide to Ansible/NGINX/uWSGI/Django, Part 1: Running the Ansible Scripts
Here at Imaginary Landscape, we are frequently tasked with spinning up new cloud servers for our clients. Once a new server is online, we usually follow up by provisioning it with useful software. To automate that process, we began using Ansible a few years ago, and have had a lot of success with it. Provisioning is complicated by nature, however, and no provisioning attempt has been completely free of difficulty. This post examines a recent provisioning and uses it to expose issues that caused pain. Some of this is undoubtedly a case of the day-to-day getting in the way of tying up loose ends, but other aspects represent more generic problems. It is in the latter category where we hope this post might hold some wider value for the reader. Ansible offers a lot of flexibility in terms of how its configuration is laid out. A very pared-down version of ours looks like this: ansible-django-stack/ ├── extra-variables.yml ├── ansible/ └── ├── inventory.ini └── roles/ │ └── django/ │ └── tasks │ └── base.yml └── playbooks/ ├── playbook-all.yml └── playbook-all.retry Now let's look at what some of those files do. STEP 1: The Inventory File Our Ansible uses an inventory.ini file to obtain the … -
Meet Distillery’s Newest Scholarship Recipient: Andrew Chatman!
Well-functioning software is vital to keeping our world moving smoothly forward. At Distillery, we do our part by building reliable, secure, thoughtfully designed software that helps our clients build business success. We also do our part by supporting the next generation of developers: students who demonstrate outstanding promise in IT, computer science, or software engineering. The post Meet Distillery’s Newest Scholarship Recipient: Andrew Chatman! appeared first on Distillery. -
Django File (and Image) Uploads Tutorial
Learn how to add user-uploaded files and images to a Django project. -
Mercurial Mirror For Django 2.1 Branch
I’m slightly late on this one, but here it is. For the record, main purposes of this mirror are: being a lightweight read-only repository to clone from for production servers hide the ugly git stuff behind a great mercurial interface The clone is at the usual location at bitbucket, from which you can browse, clone, […] -
Django Tips #8: Projects vs Apps
An explanation of Django structure and what constitutes an "app." -
An Introduction to Designing for Virtual Reality: 5 Lessons to Help You Get Started
Test driving a luxury car from the comfort of your couch. Getting on a rollercoaster that careens you through a world seething with fire-breathing dragons. Experiencing a spacewalk just as an astronaut would, floating 250 feet above the Earth. Today, these otherwise unimaginable experiences are all possible in virtual reality. The post An Introduction to Designing for Virtual Reality: 5 Lessons to Help You Get Started appeared first on Distillery. -
Equivalents in Python and JavaScript. Bonus
From time to time I google for the right syntax how to process lists and dictionaries in Python or arrays and objects in JavaScript. So I decided to extend my series of equivalents with those functions. After all, it's me too, who will be using the information I provide here. All truthful elements Sometimes we need to check from a list of conditions if all of them are true, or from a list of elements if all of them are not empty. This can be checked with the following in Python: items = [1, 2, 3]all_truthy = all(items)# True And here is an equivalent in JavaScript: items = [1, 2, 3];all_truthy = items.every(Boolean);// true Any truthful elements Similarly, we can check if at least one of the conditions is true, or there is at least one non-empty element in a list. It Python we would do that with: items = [0, 1, 2, 3]some_truthy = any(items)# True And in JavaScript we would check it like this: items = [0, 1, 2, 3];some_truthy = items.some(Boolean);// true Iterate through each element and its index Here is an example of how to iterate through a list of items and also check their indices … -
Equivalents in Python and JavaScript. Bonus
From time to time I google for the right syntax how to process lists and dictionaries in Python or arrays and objects in JavaScript. So I decided to extend my series of equivalents with those functions. After all, it's me too, who will be using the information I provide here. All truthful elements Sometimes we need to check from a list of conditions if all of them are true, or from a list of elements if all of them are not empty. This can be checked with the following in Python: items = [1, 2, 3] all_truthy = all(items) # True And here is an equivalent in JavaScript: items = [1, 2, 3]; all_truthy = items.every(Boolean); // true Any truthful elements Similarly, we can check if at least one of the conditions is true, or there is at least one non-empty element in a list. It Python we would do that with: items = [0, 1, 2, 3] some_truthy = any(items) # True And in JavaScript we would check it like this: items = [0, 1, 2, 3]; some_truthy = items.some(Boolean); // true Iterate through each element and its index Here is an example of how to iterate through a … -
A Guide To Creating An API Endpoint With Django Rest Framework
As part of our work to make sharp web apps at Caktus, we frequently create API endpoints that allow other software to interact with a server. Oftentimes this means using a frontend app (React, Vue, or Angular), though it could also mean connecting some other piece of software to interact with a server. A lot of our API endpoints, across projects, end up functioning in similar ways, so we have become efficient at writing them, and this blog post gives an example of how to do so. First, a few resources: read more about API endpoints in this previous blog post and review documentation on Django Rest Framework. A typical request for an API endpoint may be something like: 'the front end app needs to be able to read, create, and update companies through the API'. Here is a summary of creating a model, a serializer, and a view for such a scenario, including tests for each part: Part 1: Model For this example, we’ll assume that a Company model doesn’t currently exist in Django, so we will create one with some basic fields: # models.py from django.db import models class Company(models.Model): name = models.CharField(max_length=255) description = models.TextField(blank=True) website = … -
A Guide To Creating An API Endpoint With Django Rest Framework
As part of our work to make sharp web apps at Caktus, we frequently create API endpoints that allow other software to interact with a server. Oftentimes this means using a frontend app (React, Vue, or Angular), though it could also mean connecting some other piece of software to interact with a server. A lot of our API endpoints, across projects, end up functioning in similar ways, so we have become efficient at writing them, and this blog post gives an example of how to do so. -
How to test Django with LiveServerTestCase
When it comes to backend my tools of choice are Django and Python. Speed of development (particulary useful for rapid prototyping) and the excellent test coverage I can get almost out of the box are the major boons for me. I use Django for training aspiring developers too and when I run a workshop I don't go straight to the "right implementation". What I like instead is guiding newcomers through the initial "working implementation" to refactoring into a more complex application. In this tutorial you'll build a small application with the exact same mindset. We'll make it work first and them we will refactor for adding more features. How to test a Django application: what you will learn In the following tutorial you'll learn: how to build a simple Django website how to test a Django application how to measure test coverage How to test a Django application: requirements To follow along with the tutorial you should have: a basic understanding of Python and Django a newer version of Python installed on your system (Python 3 is nice to have) a basic understanding of both unit testing and functional testing How to test a Django application: setting up a Python … -
Implementation of single sign on using auth0 in django application
As the no of applications increases, users need to create username & passwords, need to remember for each application. Users can't remember these details and, sometimes users use single username/password for all applications, then there may be a chance of hacking your accounts easily. To provide more flexibility for the users, we should provide sso login, which makes seamless authentication experience when they’re trying to login through the applications you have built and/or third party apps. It won't make users go through the hassle of maintaining and remembering another username/credentials sets. In this blog post, we’ll see how to add single sign on & single sign out for a django application using auth0. Steps to follow for an auth0 account: Create your account in auth0 Go to applications & click on create application by proving app name(for ex: demoapp) & application type(web or mobile app etc.) Go to settings tab of your application(demoapp), you can see client id, client secret, domain values. Add application domains with a comma separated list in Allowed Web Origins & Allowed Origins (CORS) tab For ex: http://demoapp.io, http://demoauth.io By Default, application will use Username Password authentication database. We can also use custom database based on … -
Voice Tech 101: Everything You Need to Know About Voice User Interface
Interface design enables humans to interact with technology. Excitingly, voice user interfaces are fundamentally changing how we interact with many of our devices. Whether you’re new to voice technology or you’ve already gotten your feet wet, this “everything you need to know” primer gives a high-level overview of the various benefits and challenges of voice. These benefits and challenges will be driving forces in shaping the future of voice user interfaces. To get started, however, let’s first examine how voice interface design is different — and why that’s revolutionary. The post Voice Tech 101: Everything You Need to Know About Voice User Interface appeared first on Distillery. -
Make Django's collectstatic command forgiving
Have this ever happened to you, you run a python manage.py collecstatic command, it progresses for some time and then throws an error, something like ValueError: The file 'theme/startup/css/font/ytp-regular.eot' could not be found with <django.contrib.staticfiles.storage.ManifestStaticFilesStorage object at 0x10b47cc50>? Well, that ... Read now -
7 Conferences We’re Looking Forward To
Above: The Internet Summit in Raleigh is one of the local conferences we recommend attending. (Photo by Ian Huckabee.) At Caktus, we strongly believe in professional development and continued learning. We encourage our talented team to stay up to date with industry trends and technologies. During 2018, Cakti attended a number of conferences around the country. Below is a list (in alphabetical order) of the ones we found the most helpful, practical, and interesting. We look forward to attending these conferences again, and if you get the chance, we highly recommend that you check them out as well. All Things Open Recommended by Account Executive Tim Scales Next Conference Location: Raleigh Next Conference Date: October 13 - 15, 2019 All Things Open is a celebration and exploration of open source technology and its impact. Topics range from nuts and bolts sessions on database design and OSS languages to higher-level explorations of current trends like machine learning with Python and practical blockchain applications. The annual conference is heavily publicized in the open source community, of which Caktus is an active member. All Things Open attracts open source thought leaders from across industries, and it’s a valuable learning experience for both non-technical … -
Container Runtimes Part 4: Kubernetes Container Runtimes & CRI
This is the fourth and last part in a four part series on container runtimes. It's been a while since part 1, but in that post I gave an overview of container runtimes and discussed the differences between low-level and high- level runtimes. In part 2 I went into detail on low-level container runtimes and built a simple low-level runtime. In part 3 I went up the stack and wrote about high-level container runtimes. Kubernetes runtimes are high-level container runtimes that support the Container Runtime Interface (CRI). CRI was introduced in Kubernetes 1.5 and acts as a bridge between the [...] -
Container Runtimes Part 4: Kubernetes Container Runtimes & CRI
This is the fourth and last part in a four part series on container runtimes. It's been a while since part 1, but in that post I gave an overview of container runtimes and discussed the differences between low-level and high- level runtimes. In part 2 I went into detail on low-level container runtimes and built a simple low-level runtime. In part 3 I went up the stack and wrote about high-level container runtimes. Kubernetes runtimes are high-level container runtimes that support the Container Runtime Interface (CRI). CRI was introduced in Kubernetes 1.5 and acts as a bridge between the [...] -
Django Quiz 2016
I realized I’ve posted the 2017 and 2018 editions of the London Django Meetup December quizzes on my blog, but forgot to post the first one in 2016. So here it is reproduced below, if you’d like to play at home or scroll through to the answers to pick up on some more Django trivia. Part 1: Multiple Choice 1. In which city in Kansas was Django conceived? Newton Lawrence Pittsburg 2. In what year was Django first released? 1999 2001 2005 3. Where was Djangocon EU 2016 held? Cardiff Budapest Bucharest 4. When does Python 2.7 stop being supported? 1 Jan 2018 2020 April 12 2020 5. Which version of Django will drop Python 2 compatibility? 1.12 2.0 2.1 6. Which of these popular sites does not run on Django? Instagram Slideshare Bitbucket Disqus 7. What is i18n short for? Internationalization International Code 18 Internal operation 8. Which official Django project offers websocket and asynchronous task support? Inputs Transmissions Channels 9. What does SQL stand for? Standard Query Language Structured Query Language SQL’s a Query Language Part 2: Freeform answers 1. Which database servers does Django core include backends for? One point each, but minus one for each wrong. … -
How to add buttons to ModelAdmin Index View in Wagtail CMS
By default, every object in ModelAdmin's Index View of Wagtail CMS gets two buttons: Edit and Delete. What if we want to add more buttons? Is that possible in Wagtail? My answer is yes, and it's easy! Follow me! Let's add a "View" button Let's assume ... Read now
