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Step-by-Step Guide to Setting up Django-RQ

Modern websites are complicated pieces of machinery. The requests they initiate can be intensive and take more time to complete than a typical HTTP request-response cycle. This is typically refererd to as a blocking request, in that the browser (and user) waits until the response is received. If the request...

Scraping pdf, doc, and docx with Scrapy

In February 2017, Google announced its plans to discontinue its Google Site Search product. Those clients of Imaginary Landscape who had relied on Google to provide their users with a search engine service for their website looked to us for a new solution. Finding no obvious equivalent replacement, we decided to create our own website scraper and accompanying search app.

The case for a Django upgrade

It boils down to this. An upgrade costs money, sometimes a lot of money, but the result has no visible outcome. In fact, in many cases the only outcome is an assurance that you've reduced the probability of attack, intrusion, breach and related unpleasantness. By any measure, that's a tough...

Let's Encrypt with Alternative ACME Client

I recently was tasked with installing Let’s Encrypt on a server running an old version of Debian (Squeeze) which was due to have its certificate expire. Unfortunately, this meant following the path of setting up certbot and a cron job as outlined in Let's Encrypt Quick Setup -- which basically follows the...

Don't Wait for the Lawsuit - Make Your Website Accessible Now

Although no formal set of guidelines have been released, website owners are encouraged to immediately comply with level A and AA of the Web Content Accessibility Guidelines as published by the World Wide Web Consortium. Aggressive law firms have had success bringing suit against organizations whose websites are not...

Writing Functional Python

The recent buzz surrounding Functional Programming (FP for short) is well deserved. Languages like Haskell and Clojure in use by big name companies such as Barclays Captial, Atlassian, and Walmart have helped FP ideas gain a major foothold in industry. I am a Clojurist hobbyist who has been interested in FP for...

Free and Auto-Renewing SSL Certificates: Letsencrypt Quick Setup

You may have have heard of Letsencrypt, which is a new SSL certificate authority that provides free SSL certificates that are supported in all modern browsers. This service is also designed to help automate the issuance of SSL certificates.  The following describes how to use Letsencrypt to configure auto-renewing SSL certificates...

End User Focused Django Tutorials

Django is being used by corporations worldwide.  Every day, Imaginary does its part to increase this footprint by deploying Django websites and applications to our clients. As a result, Django is being exposed to greater numbers of end users. I'm not talking end user developers.  I'm talking Samantha in marketing...

How to Use Amazon S3 Storage for Select Apps

At Imaginary Landscape, we often have the need to add remote file storage capabilities for our clients. At first glance, this sounds easy enough: "pip install django-storages", add the right credentials, and boom, you're done! However, this was not the case for one particular situation we encountered. We didn't want...

Braintree Integration with Django

Braintree Integration in Django Introduction Much has been written about how to implement online payment using the services available from Braintree, but not much has been written about how to do it within a Django framework. Combining the two does not require any special contortions, but as Braintree’s own online...

Django Class-Based Views: The Basics

Class-based views are my favorite feature of Django, so there is an obvious bias when discussing function views and class-based views.  I’ll throw my two cents in here and move on.  I prefer the structure and predictability that class-based views provide. I recognize that there are many instances when a...

Django CMS Plugin Authenticated User Variations

Note: a companion app for this post can be found here:  https://github.com/ImaginaryLandscape/cmsplugin-auth-content-example In a recent project using django CMS, we found ourselves in need of serving alternate plugin content to authenticated users. This is not the first time a request such as this has been made, and on past occasions...

A Python Solution for Making Custom PDFs from HTML

The client wanted to give their users the option of printing completed forms to a pdf file. They also wanted the pdf to be rendered with formatting and style that varied slightly from the online display of the completed form, and so desired a solution other than the browser’s own...

Encrypted Postgres Backups

When creating a Postgres Database backup, one convenient approach is to export the database to disk via the pg_dump command. This postgres export file can then be picked up by a regular filesystem backup. A possible security risk with this approach is that your sensitive database data could be situated...