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Stack

HTML

HTML for the majority of the site is generated from Django/Wagtail templates and components.

Frontend styleguide

This site has a styleguide, which can be refrenced for frontend development to note intended usage of exisitng styles and components.

CSS

CSS is currently in a state of transition. We are using custom Sass, mixed with the mofo-bootstrap theme found under source/sass/mofo-bootstrap while we also trying to move away from Bootstrap to Tailwind CSS. Reason for the transition to Tailwind is that it allows us to sync the design tokens defined by the design team with the available CSS utilities, which makes it easier for our implementation to stay true to the design system. The following epic should give a better picture as to where we stand in this transition: https://app.zenhub.com/workspaces/mofo-engagement-585335eab729771d0736378d/issues/mozilla/foundation.mozilla.org/6989

We are utilizing the Tailwind configuration file (tailwind.config.js) to override some of the Tailwind's default design system options with our own. For example, we define our own screen breakpoints, sizing scale and colors. See the config file directly for more details.

All new CSS work should try to replace all use of Bootstrap and custom classes by applying the correct Tailwind utilities in the HMTL.

For more complex components, there is also tailwind-plugins/components.js. We are also using tailwind-plugins/components.js to define Tailwind equivalents of Bootstrap classes (e.g. .container and .row).

React

React is used à la carte for isolated component instances (eg: a tab switcher) since the site is not designed as a single page application. This precludes the need for Flux architecture, or such libraries as React Router.

To add a React component, you can target a container element from /source/js/main.js and inject it.

HTMX

We have added the htmx.org javascript library to the project. htmx allows us to combine server rendered HTML (as we have with Django templates) with dynamic updates on the frontend.

The main workflow of htmx is the following:

  1. A trigger (e.g. button click) leads to an AJAX request to the backend (Django),
  2. Django renders a template in response to the AJAX request and sends the HTML back,
  3. htmx injects the HTML response into the DOM.

This workflow fits particularly nice into a Django project like this, because most of this can be configured with a few HTML attributes.

For more information see the htmx docs.

Django and Wagtail

Django powers the backend of the site, and we use Wagtail with Django to provide CMS features and functionality.

If you are defining a new page class for the site, make sure it inherits both the Wagtail Page class as well as the FoundationMetadataPageMixin mixin. The first is a general Wagtail requirement, and the latter ensures that page metadata used for SEO and the like is (generally) correct.

Localization

We use wagtail-localize for CMS content localization. Please see its documentation for more information.

Localiztion of numbers

We are using Django's L10N setting set to True. This will also be the Django default starting in version 4.0 and can not be disabled starting version 5.0.

With L10N = True, Django will use a formatting depending on the active locale when rendering numbers and dates. This can have impilcations when we dynamically render numbers into template that are meant for programmatic use, think script or style tags as well as attributes like width and height on the img tag. Rendering localized value can lead to wrong behaviour.

Consider for example that in the German locale the decimal separator is a comma rather than a dot. This can lead to misinterpretation of the number as a list or otherwise invalid value.

To ensure correct programmatic use of the rendered numbers, we need to prevent their localization. The unlocalize template filter can be used to deactivate the localization of a number in the template.

See also: https://docs.djangoproject.com/en/4.1/topics/i18n/formatting/#controlling-localization-in-templates

A/B testing

The project has wagtail-ab-testing setup. Out-of-the box we only get a "Visit page" goal event type which we can use to track when users visit a goal page. Custom goal types need to be setup to track other events such as making a donation, submitting a form, or clicking a link.

S3

All assets are stored on S3.

File Structure

/
├── dest <- Compiled code generated from source. Don't edit!
├── network-api <- Django site code
│   ├── networkapi <- Django apps live within this directory
        └── wagtailpages <- most of the pages using wagtail are here
│   └── templates <- page templates and overrides
├── locales <- Localized strings (Java .properties syntax)
├── scripts <- Scripts run by npm tasks
└── source <- Source code
    ├── images <- Image assets
    ├── js <- JS code
    │   └── components <- React components
    ├── json <- JSON for static data sets
    │   └── temp <- JSON pulled from web services. Don't commit!
    └── sass <- Sass code

The templates are very scattered at the moment. We are trying to localize all tempaltes to the location network-api/networkapi/templates. When ever you touch or create a template, please move it to / create it in this location and place it in the appropriate sub-directory, pages or fragments. Create sub-directories under pages or fragments only when necessary and you have more than one template that needs to be grouped.

Fundraise Up

This site uses Fundraise Up as a payment processor.

Enabling Test Mode

Developers can enable Fundraise Up "test mode" by appending the query parameter ?fundraiseUpLiveMode=no to the end of the current URL.

With live mode disabled, you can test functionality without the need of a real credit card. Test card information will be given to you when completing the checkout process.