Mapscript based WMS framework for GeoDjango
For complete documentation please go to http://django-wms.readthedocs.org
The processing of spatial data in django-wms relies on MapServer and its python bindings MapScript. Raster data integration depends on the django-raster package. The use of PostGIS as the database backend is required as well, for raster ntegration PostGIS >= 2.0 is required (see also django-raster package).
Install package with pip install django-wms
Add “wms” to your INSTALLED_APPS setting like this:
INSTALLED_APPS = ( ... 'wms', )
To create a mapping service, subclass the django-wms layer, map and view classes and connect them to an existing model in django that has a spatial field (such as Point, Polygon or MultiPolygon). An example wms_config.py module could be specified as follows
### wms_config.py # Load django-wms classes from wms import maps, layers, views # Load model with spatial field (Point, Polygon or MultiPolygon) from myapp.models import MySpatialModel # Subclass the WmsVectorLayer class and point it to a spatial model. # Use WmsRasterLayer for rasters class MyWmsLayer(layers.WmsVectorLayer): model = MySpatialModel # Subclass the WmsMap class and add the layer to it class MyWmsMap(maps.WmsMap): layer_classes = [ MyWmsLayer ] # Subclass the WmsView to create a view for the map class MyWmsView(views.WmsView): map_class = MyWmsMap
With the WmsView subclass in place, the only thing left to do to create a functional map service is to hook the view into a url. An example url configuration urls.py could be
### urls.py # Import the wms view from myproject.wms_config import MyWmsView # Add url patterns to setup map services from the view urlpatterns = patterns('', # This creates a WMS endpoint url(r'^wms/$', MyWmsView.as_view(), name='wms'), # This creates a TMS endpoint url(r'^tile/(?P<layers>[^/]+)/(?P<z>[0-9]+)/(?P<x>[0-9]+)/(?P<y>[0-9]+)(?P<format>\.jpg|\.png)$', MyWmsView.as_view(), name='tms'), )
The django-wms package will automatically detect the first spatial field it can find in MySpatialModel and create a WMS endpoint from the class based view. If the three arguments x, y and z are found in the urlpattern, the view functions as TMS endpoint.
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