# Getting an instance so we can generate the map widget; also
# getting the geometry field for the model.
admin_instance = PointAdmin(Point, admin.site)
point_field = Point._meta.get_field('point')
# Generating the widget.
PointWidget = admin_instance.get_map_widget(point_field)
In fact all the complication at the moment there is no static widget that widget you could use in your own form. You have to build them dynamically.
I am now going to break down the 3 lines of code.
PointAdmin is the ModelAdmin class which is a representation of a model in the admin interface. Here it is an example :
from django.contrib.gis import admin
from geotagging.models import Point
list_filter = ('content_type','point' )
list_display = ('object', 'point', 'content_type', 'object_id')
Point in the model we are working on so Point._meta.get_field('point') is accessing the field called point of the Point mode. The code below should help you to understand :
point = models.PointField(verbose_name=_("point"),srid=4326)
content_type = models.ForeignKey(ContentType,
object_id = models.CharField(_('object ID'),max_length=50)
object = generic.GenericForeignKey(ct_field="content_type", fk_field="object_id")
objects = models.GeoManager()
return 'Point for %s' % self.object
The last line is actually where the geodjango specificity is :
* PointWidget = admin_instance.get_map_widget(point_field)
get_map_widget is defined here
Now that we have a PointWidget we can use it in our form. Here is is a small example :
point = forms.CharField(widget=PointWidget())
model = Point
exclude = ("content_type","object_id")
js = ("http://openlayers.org/api/2.6/OpenLayers.js",)
Now you can use geodjango super widgets in your forms.