Mixtures

Mixtures website source code.

Technical docs

Application structure

Mixtures mainly use a central django app, drugcombinator, where all templates, models and logic are encapsulated.

However, another small app, named drugportals, is kind of plugged into it. This app contains all stuff related to thematic portals. It was designed this way because:

1. Thematic portals are meant to be independant from a user pespective;
2. Hence, they use a separate frontend design;
3. And last but not least, we are not sure if they will survive after Mixtures goes out of beta.

Finally, some generic parts (like the about page or 404 templates) lie in project-wide directories.

Subdomains

The drugportals app uses a special subdomain routing.

This means any relevant subdomain (eg. portalname.exemple.com) should be routed to Django for portals to work, either on a production or development environment.

When using the dev server

One caveat of this approach is some inconsistencies in the behaviors of a local dev server and a production environment, due to the localhost domain not containing a . in it.

This is mainly because:

• The vast majority of web browsers does not allow setting a wildcard cookie domain to a hostname that does not contains a not, such as .com or -you guessed it- .localhost;
• Historycally, of how django-hosts parses URLs, but a fix for this was merged (as of 2023) and it should now be consistent.

One easy solution to this is to serve the application on another host in the dev environment, such as local.host, for exemple by editing the hosts configuration file. Some settings.py entries will need updating to reflect this.

Views

This project uses a mix of function-based and class-based views. Function-based views are prefered for simplicity, but CBVs better suit certain scenarios (e.g. when inheritance is required).

CBVs

In addition to usual Django conventions, CBVs implement a get_context method returning a SimpleNamespace object. This allows dot notation to be used when setting up the context in the view code, and overriding of the get_context method when inherited classes need to append objects to view context. The get, post or dispatch methods are then responsible to call vars() on the SimpleNamespace object to pass an usual dict to the template renderer.

Sitemaps

In addition to the django.contrib.sitemaps package, this project uses a few tweaks:

• Static pages sitemaps use a custom child class which allows shorter definition;
• Sitemaps of objects that are served by a subdomain use a custom child class which support fully qualified domain names in reversed URLs;
• Each app has its own sitemaps module, which is responsible for defining a SITEMAPS dict containing the sitemaps such as {'sitemap_name': sitemap_object};
• A get_apps_sitemaps function is used in order to collect those sitemaps and prefix them.

Relevant source code lives in the utils/sitemaps directory.

About SASS

Mixtures uses SASS for generating its stylesheets. Each app has its own .scss files in its static directory, accompagnated by generated and minified .min.css files.

In order to customize the MaterializeCSS framework, custom SASS variables (such as colors) are injected in the main library file. Those variables lie in a _variables-custom.scss file near to the library.

From time to time, SASS files that lie in a given app are loaded from others SASS files which belong to another app. As the SASS compiler expects those files to be in a load path, this can make the compilation to fail.

To prevent this, a ready to use script, sass-compile.ps1, passes requiered arguments to the Dart SASS compiler. Using another way for SASS compilation is therefore unrecommanded.