Integrated Django Vector Tile Server based on mbtiles
Project description
Django Tiles GL
Integrated Django Vector Tile Server based on mbtiles.
Description
Simple app to serve Mabpox Vector Tiles directly from MBTiles files via Django views.
Django Tiles has a minimal dependencies. It does not require GeoDjano or any other libraries. Its only dependency is Django itself.
Django Tiles GL does not create raster tiles. It may only be used with map libraries that support to render vector tiles like MapLibre or OpenLayers.
Django Tiles GL contains the OSM Bright map style which can be used to render Vector Tiles following the OpenMapTiles vector tile schema.
Note that this default style is using OpenSans fonts which does only contain Latin, Greek and Cyrillic alphabets.
Other tile schemes are possible by creating a custom map style specification and referencing Django Tiles GL TileJSON endpoint as a source.
Usage
See the demo Django application for a simple usage example.
Setup
- Add
django_tiles_glto youINSTALLED_APPSsetting. - Add
django_tiles_gl.urlsto your url patterns. For example with thetilesprefix:urlpatterns = [ ... path("tiles/", include("django_tiles_gl.urls")), ]
- Set path to your MBTiles files in you application settings.
MBTILES_DATABASE = BASE_DIR / "demo" / "data" / "berlin.mbtiles"
- Optionally set the default center to be set on the default map style.
MBTILES_CENTER = [13.4, 52.5, 13] # [longitude, latitude, zoom]
- Optionally force absolute urls to use SSL by prefixing them with "https://".
This might be required if you app is running behind a reverse proxy and you
are not able to set
SECURE_PROXY_SSL_HEADERfrom the SSL enabled proxy server.MBTILES_FORCE_SSL = True
Views
To render a map you have to include a JavaScript mapping library and refer to the tile endpoint or the default integrated style.
Django Tiles GL provides the following endpoints:
{% url 'django_tiles_gl:openmaptiles_style' %}- Default OpenMapTiles style defintion using the OSM Bright map style.{% url 'django_tiles_gl:tilejson' %}- TileJSON describing the configured MBTiles files and providing the correct tile urls.{% url 'django_tiles_gl:tile' x y z %}- Actual tile endpoint, returning vector data in the PBF format.
Django Tiles GL is bundles with MapLibre and provides a template tag for easy inclusion. A minimal working example has to contain the following defintions:
{% load tiles_gl_tags %}
<!DOCTYPE html>
<html>
<head>
{% maplibre_head %}
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
var map = new maplibregl.Map({
container: 'map',
style: '{% url 'django_tiles_gl:openmaptiles_style' %}',
});
</script>
</body>
</html>
Data / MBTiles generation
There are mutiple tools to generate valid MBTiles databases. The easiest to use with Django Tiles GL is OpenMapTiles as it is compatible with the bundled default style.
For a quickstart you may generate the MbTiles for an area with the following commands:
git clone https://github.com/openmaptiles/openmaptiles.git
cd openmaptiles
./quickstart.sh <area>
Fo further information and optiones see https://github.com/openmaptiles/openmaptiles
Further Topics
Caching
It is advised setup a caching proxy for the tile endpoint. Please refer to you HTTP servers documentation. For example the nginx proxy cache config
Other Django tile server solutions
-
django-geojson-tiles - Generates GeoJSON tiles from a GeoDjango model. No MBTiles support. Not to be used as a base layer.
-
django-vectortiles - Generates Vector Tile layers from GeoDjango. No MBTiles support. Not to be used as a base layer.
-
django-mbtiles - Uses MBTiles to generate rastered tiles and UTFGrid. Does not support modern vector tiles. Strong inspiration for this project.
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