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The standard GeoDjango admin has a basic VMAP0 background. OsmGeoAdmin adds an OSM background.

How do I replace the background map with another WMS?

In the source code of the admin OpenLayers template there are {{ wms_url }} and {{ wms_name }} variables but I cannot find where these can be specified to customize it.

Or should I just completely override the default admin template?

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up vote 4 down vote accepted

try to read Improving the Admin from

{% extends "gis/admin/openlayers.js" %}

{% block extra_layers %}
    topo_layer = new OpenLayers.Layer.WMS( "USA Topo", "", {layers: 'DRG'} );
    {{ module }}.map.addLayer(topo_layer);
    nexrad_layer = new OpenLayers.Layer.WMS( "NEXRAD", "", {layers:"nexrad-n0r",transparent:"true",format:'image/png'} );
    {{ module }}.map.addLayer(nexrad_layer);
{% endblock extra_layers %}

i hope it helps you...

share|improve this answer
A very detailed guide indeed. Thank you. – steko Dec 18 '12 at 16:03

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