FediForum 2024 Location Sharing

As a fediverse user, I would like to share posts that show my presence at a location.

These notes are collected to support discussion during the upcoming FediForum Sep 12-14, 2024

Location sharing vocabularies already exist in ActivityPub as Place objects and Geo-Social Events with Activity Types arrive Arrive, Leave, and Travel .

It might be possible to extend wordpress-activitypub plugin to support place and location activities in wp post types.

This continues discussion from 2023 FediForum – Session: Physical Location in Fediverse data model and open mastodon issue #29002

Previously indieweb.org/location , geosocial networking, ( for profit: swarm/foursquare, gowalla, dodgeball )

As an example, Pixelfed allows including a place from a set list of cities.

• https://pixelfed.social/i/web/post/739027037396240803
  • Full json from browser.pub

  "location": {
    "type": "Place",
    "name": "Los Angeles",
    "longitude": "-118.243680",
    "latitude": "34.052230",
    "country": "USA"
  }

WordPress Notes

I will be at WordCamp US 2024 on September 17 for contributor day working on this integration.

• org/plugins
  • micropub – github – indyweb
  • wordpress-activitypub – github – automattic
  • webmention – github – pfefferle
  • simple-location – github – dshanske / gwg
    • gwg has added significant additional functionality since the plugin was named “simple”
    • Access metadata via helper functions at includes/data-functions.php
  • travelers-map – github – verriercamille
  • enable-mastodon-apps – github – akirk
  • friends – github – akirk
• WordPress ActivityPub plugin
  • Inspired by ActivityPhp – e.g. Arrive Activity

filter “activitypub_transformer” in transformer/class-factory.php

		 * // Filter be object type
		 * add_filter( 'activitypub_transformer', function( $transformer, $object, $object_class ) {
		 *     if ( $object->post_type === 'event' ) {
		 *         return new My_Event_Transformer( $object );
		 *     }
		 *     return $transformer;
		 * }, 10, 3 )

class-base-object.php:

		$array = \apply_filters( 'activitypub_activity_object_array', $array, $class, $this->id, $this );
		$array = \apply_filters( "activitypub_activity_{$class}_object_array", $array, $this->id, $this );

• Demos
  • ActivityPub Plugin Demo m. Matthias Pfefferle
  • Das Verborgene Potential von WordPress! | m. Matthias Pfefferle
• Hosting workarounds for webfinger on Flywheel
  • SUCCESSFUL Adventures in setting up ActivityPub + Webfinger on a Flywheel-hosted WordPress site
  • Successfully repeated with Andrew from Flywheel support.
• Example urls on localhost
  • Add ?activitypub query string to author, blog, single pages.
  • http://localhost:8080/wp-json/activitypub/1.0/webfinger?resource=acct:mike@localhost
  • http://localhost:8080/example-activitypub-post/?activitypub
  • http://localhost:8080/index.php/author/mike/?activitypub
  • http://localhost:8080/index.php/wp-json/activitypub/1.0/actors/1/outbox

Fedi Notes

Current Support:

• Träwelling – CheckIn Service for transit
• Pixelfed – Add Location – Pre-set list of cities
• Friendica – Lat / Long ?
• Honk – Lat / Long rendered in reading
• fediversity.site / Y Documentation – Location Services / streams

Fedi Development

• Fediverse
  • https://browser.pub/ – A browser for exploring ActivityPub and the ⁂fediverse
• OpenStreetMap Overpass API for place data
• delightful-activitypub-development – A curated list of developer resources related to ActivityPub and the Fediverse.

Example Use

• https://location.edent.tel/.well-known/webfinger
• https://location.edent.tel/edent_location
• https://location.edent.tel/outbox
• https://location.edent.tel/posts/65db908e-5330-de2d-9b0d-07e1651547f3.json

  "location": {
    "name": "Palladium Box Office",
    "type": "Place",
    "longitude": "-0.1404904",
    "latitude": "51.5144945"
  },

Previously:

January 2024
– github/mastodon – Display embedded GeoTags #29002
– FourSquare / Swarm for fediverse demo by Terence Eden @[email protected] including a minimum viable Mastodon broadcast with check-in support

October 2023 – Mapping blog posts ( ap )- @[email protected] – WordPress Travelers’ Map plugin

September 2023 – FediForum – Session: Physical Location in Fediverse data model

January 2023
– FourSquare / Swarm @[email protected] , @[email protected] .
– github/mastodon – Add a location under a toot #22963

2018 – WordPress Pterotype plugin
2016 – GeoTag toggle #281 – github/mastodo
2012 – indieweb.org/location

Mapping Notes

• Meridian – OpenStreetMap-based places database and API. Point of Interest reverse geo-coding and osm contribution tool