wagtail-tag-manager 0.0.3

A Wagtail add-on for managing tags.

Wagtail Tag Manager (WTM for short) is a Wagtail addon that allows for easier and GDPR compliant administration of scripts and tags.

Disclaimer

This package attempts to ease the implementation of tags by the new ePrivacy rules as defined by the European Union. I urge you to read about these new rules and ensure you are properly configuring your tags for both the analytical and traceable variants. This package is free and the author can not be held responsible for the correctness of your implementation, or the assumptions made in this package to comply with the new ePrivacy regulation.

Read more about the ePrivacy Regulation.

Included in this package is a cookie bar which admittedly provides too little information to end users regarding the purpose of the scripts you are placing on the website. For compliance, please use the cookie_bar.html template to change the text shown in the cookie bar.

Requirements

Django	2.0
Wagtail	2.0, 2.1

Instructions

Installation:

pip install wagtail-tag-manager

Add the application to your INSTALLED_APPS:

INSTALLED_APPS = [
    # ...
    'wagtail.contrib.modeladmin',
    'wagtail_tag_manager',
    # ...
]

Include the middleware:

MIDDLEWARE = [
    # ...
    'wagtail_tag_manager.middleware.TagManagerMiddleware',
    # ...
]

Include the urls:

from django.urls import include, path
from wagtail_tag_manager import urls as wtm_urls

urlpatterns = [
    # ...
    path('wtm/', include(wtm_urls)),
    # ...
]

To enable the included “Manage” view, add this to your settings:

WTM_MANAGE_VIEW = True

You can also use the following provided template tags to render a tag status overview and a form.

{% wtm_status_table %}

{% wtm_manage_form %}

Settings

WTM_MANAGE_VIEW = True

Allows you to enable or disable the included “manage” view allowing users to get insight in the tags running on your site and adjust their preferences. The view is enabled by default.

WTM_CACHE_TIMEOUT = 1800

Sets the amount of microseconds the cache will be preserved. At the moment, caching is only applied to constants, which will refresh when a constant is saved. Default is 30 minutes.

Sandbox

To experiment with the package you can use the sandbox provided in this repository. To install this you will need to create and activate a virtualenv and then run make sandbox. This will start a fresh Wagtail install, with the tag manager module enabled, on http://localhost:8000 and http://localhost:8000/cms/. The superuser credentials are [e-mail] with the password testing.

Various types of tags, constants and variables are enabled out of the box. Check out the console in your browser to see them in action.

Todo

[ ] Optimize the middleware for performance.

[ ] Add selenium tests for proper lazy tag testing.

[ ] Ensure the cookie bar and manage view are accessible.

[ ] Write user and developer documentation.

Concept

State	Functional	Analytical	Traceable
No cookies accepted.	yes	no	no
Cookies implicitly accepted through browser settings.	yes	yes	no
Cookies explicitly accepted, noting tracking functionality.	yes	yes	yes

Note that in the case of analytical cookies or local storage, you are obliged to still show a notification at least once, noting that you are using cookies for analytical and performance measurement purposes.

When implementing tracking cookies, the user has to explicitly give permission for you to enable them for their session. When asking for permission, you must explicitly state the tracking functionality of the script you are using.

To ease the implementation by this concept, Wagtail Tag Manager allows you to define a tag as functional, analytical of traceable. When properly configured, it’ll take care of loading the correct tag at the correct time, taking in account the following scenario’s:

1. The user has not accepted cookies.

	Functional	Analytical	Traceable
Instant	Yes	No	No
Lazy	Yes	No	No

2. The user has accepted cookies through browser settings.

	Functional	Analytical	Traceable
Instant	Yes	Yes*	No
Lazy	Yes	Yes	No

As the acceptance of analytical tags can only be verified client side, we’ll first load all the analytical tags lazy (whether they are instant or not). On the next request we are able to instantly load the analytical tags marked as ‘instant’.

Please note that we still have to show a message stating that we are using analytical tags.

3. The user has explicitly accepted tracking cookies for your site.

	Functional	Analytical	Traceable
Instant	Yes	Yes	Yes*
Lazy	Yes	Yes	Yes

We’ll load the traceable tags marked ‘instant’, after the user accepting the usage of these tags, together with the lazy tags. On the next request we are able to instantly load the traceable tags marked as ‘instant’.