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xAPI Plugin

The xAPI Plugin is for Grav CMS to send xAPI (Tincan) statements to an LRS. So far this plugin only sends statements for storage. It doesn't provide yet any LRS query.

How does it works :

  • When a user opens a page: a statement is sent to the LRS. You can map a group of users to different LRS. You can map the page template to verbs and/or activityTypes

  • When a from is submited: You can add a xAPI process to a form so that its submission triggers a statement.

  • You can add js script to your pages/templates to configure trigger special statements.

There would be a lot of work to take full advantage of the specifications. So feel free to comment, raising issues, or to submit PRs

Installation

Installing the xAPI plugin can be done in one of two ways. The GPM (Grav Package Manager) installation method enables you to quickly and easily install the plugin with a simple terminal command, while the manual method enables you to do so via a zip file.

GPM Installation (Preferred)

The simplest way to install this plugin is via the Grav Package Manager (GPM) through your system's terminal (also called the command line). From the root of your Grav install type:

bin/gpm install xapi

This will install the xAPI plugin into your /user/plugins directory within Grav. Its files can be found under /your/site/grav/user/plugins/xapi.

Manual Installation

To install this plugin, just download the zip version of this repository and unzip it under /your/site/grav/user/plugins. Then, rename the folder to xapi. You can find these files on GitHub or via GetGrav.org.

You should now have all the plugin files under

/your/site/grav/user/plugins/xapi

NOTE: This plugin is a modular component for Grav which requires the following to operate :

Admin Plugin

If you use the admin plugin, you can install directly through the admin plugin by browsing the Plugins tab and clicking on the Add button.

Note The admin blueprints is experimental. As I manage all my grav with Yaml files not using the admin, it might have some flaws. Feel free to submit PR to enhance it.

Configuration

Before configuring this plugin, you should copy the user/plugins/xapi/xapi.yaml to user/config/plugins/xapi.yaml and only edit that copy.

Here is the default configuration and an explanation of available options:

enabled: true
php:
  active: true
js:
  active: false
lrs:
    -
        naming: default
        endpoint: "https://mylrs/data/xAPI"
        username: 3b5d9d1f2fc76e9cdb663f311613d5663fc694d1
        password: fa4a6689c00153b393905e095f44510d34138195
        version: "1.0.1"
template_activityType:
    -
        naming: default
        activityIRI: "http://activitystrea.ms/schema/1.0/page"
template_verb:
    -
        naming: default
        verbIRI: "http://activitystrea.ms/schema/1.0/read"

filter:
  template:
    - login
  taxonomies:
    category:
      - reporting
  users:
    - jdoe
  groups:
    - management
  uri:
    query:
        -
            key: search
            value: test

Note that if you use the admin plugin, a file with your configuration, and named xapi.yaml will be saved in the user/config/plugins/ folder once the configuration is saved in the admin.

Usage

Activity / Object

xAPI object The statement's object is defined by the page's route.

nothing configurable, make a proposal should you need it to

Context

xAPI context Is defined by the site's title and the current language.

nothing configurable, make a proposal should you need it to

JS

Activating the tincan js will add the minified TinCanJS library to the page html head, then up to you to configre and trigger the statememnts.

lrs

A sequence of

  • naming An identifier for an LRS to bemapped to a grav user's group. (user belonging to a group matching the name of the LRS will have their statements sent to that LRS)
  • endpoint see xAPI doc
  • Credentials to connect to the LRS
    • username
    • password
  • version (the LRS's xAPI version)

A default setup is mandatory. You can add as many LRS as you want

lrs:
    - 
      naming: default
      endpoint: https://my.lrs.test/data/xAPI/
      username: 3b5d9d1f2fc76ed5663fc694d19cdb663f311613
      password: fa4a6689c001534510d34138195b393905e095f4
      version: "1.0.0"
    - 
      naming: new_starters
      endpoint: https://my.lrs.other/data/xAPI/
      username: 3f311613d5663fc694d13b5d9d1f2fc76e9cdb66
      password: 905e095f44510d34138195fa4a6689c00153b393
      version: "1.0.1"      

So if a user has group 'new_starters' statements will be sent to that LRS, else to the 'default' one.

template_verb

There you can define a sequence of verbs to match a pages templates If not found default is chosen

template to verb:
  -
    naming: default
    home: http://adlnet.gov/expapi/verbs/experienced
  -
    naming: listing
    verbIRI: 'http://activitystrea.ms/schema/1.0/search'

template to activityType

There you can define a sequence of activityTypes to match a pages templates If not found default is chosen

template_verb:
    -
        naming: default
        verbIRI: 'http://activitystrea.ms/schema/1.0/read'
    -
        naming: listing
        verbIRI: 'http://activitystrea.ms/schema/1.0/search'
    

filters

Exclusive filter to prevent tracking usage of :

  • page
    • template
    • taxonomies
  • user
    • login
    • group
  • URL
    • routes
    • queries
filter:
  template:
    - login
  taxonomies:
    category:
      - reporting
  users:
    - jdoe
  groups:
    - management
  uri:
    query:
        -
            key: search
            value: test

Forms

Just add in your form's process definition (frontmatter) the form's results to match a xAPI extension

    process:
        xapi:
            extensions:
                _id: "{{ grav.user.username }}{{now|date('HisDdMy') }}" #twig computed expl
                http://id.tincanapi.com/extension/purpose: todo-form-field
                targetDocType: targetDocType-form-field
                http://id.tincanapi.com/extension/date: deadline-form-field
                http://id.tincanapi.com/extension/severity: criticality-form-field
                comments: comments-form-field
                sourceLang: sourceLang-form-field

Credits

Uses the all mighty https://rusticisoftware.com/ PHP lib. https://github.com/RusticiSoftware/TinCanPHP

To Do

  • Page level profiles
  • extend templates with js tiggers
  • use lrs response to filter tracking
  • ...