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mod_geomap

Support for displaying maps and adding geographical locations to :term:resources <resource> in the admin.

Calculates quadtile codes from lat/long location stored in Zotonic resources, and other geo-related functionality.

Uses OpenStreetMap for display of maps in the admin and on Zotonic websites.

Configuration

This modules has the following configuration keys:

  • mod_geomap.provider Either openlayers (default) or googlemaps
  • mod_geomap.google_api_key The API Key for Google Maps requests
  • mod_geomap.location_lat Default latitude for map views
  • mod_geomap.location_lng Default longitude for map views
  • mod_geomap.zoomlevel Default zoomlevel for map views (0..29)

Search query: geo_nearby

The module exposes a new search query type called geo_nearby, which is used like this:

{% with m.search[{geo_nearby id=1306 distance=10}] as results %}

Required parameters are id or (lat+lng), and distance (which specifies the search radius in kilometers).

The results are ordered, the nearest location is given first. (When the id parameter is given, the first result is thus the id itself).

Optional parameters are cat, which can be a list of categories to which to restrict the resulting resources to.

Service: /api/geomap/nearby

Retrieve a list of resources with (basic) information about them, all of which are in the vicinity of the given resource or lat/lng pair.

Internally uses the geo_nearby search mechanism, and has the same parameters.

It returns a list of JSON objects with for each resource the following resource properties: id, title, summary, location_lat, location_lng, location_zoom_level, created, modified, publication_start, image_url.

Service: /api/geomap/locations

The module exposes an API service at /api/geomap/locations, which returns a list of locations for the search or id given.

Custom tag: geomap_static

Shows a location’s map using static images from OpenStreetMap.

{% geomap_static latitude=52.34322 longitude=4.33423 %}

The location is taken from the tag’s latitude + longitude parameters, or, when absent, from the id parameter which is supposed to be a Zotonic resource of category location (e.g. having an address).

It displays the _geomap_static.tpl template.

Other parameters:

zoom Zoom level (defaults to 14)

n How many rows and cols to display (defaults for the rows and cols parameters), defaults to 2.

cols How many grid columns to display

rows How many grid rows to display

size The size in pixels of each tile, defaults to 256.

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OpenStreetMaps and GoogleMaps support module for Zotonic

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