GeoJSON SerializerLink to this heading#GeoDjango provides a specific serializer for the GeoJSON format. See\nSerializing Django objects for more information on serialization.
\nThe geojson serializer is not meant for round-tripping data, as it has no\ndeserializer equivalent. For example, you cannot use loaddata to\nreload the output produced by this serializer. If you plan to reload the\noutputted data, use the plain json serializer\ninstead.
In addition to the options of the json serializer, the geojson\nserializer accepts the following additional option when it is called by\nserializers.serialize():
geometry_field: A string containing the name of a geometry field to use\nfor the geometry key of the GeoJSON feature. This is only needed when you\nhave a model with more than one geometry field and you don’t want to use the\nfirst defined geometry field (by default, the first geometry field is picked).
id_field: A string containing the name of a field to use for the id\nkey of the GeoJSON feature. By default, the primary key of objects is used.
srid: The SRID to use for the geometry content. Defaults to 4326\n(WGS 84).
The fields option can be used to limit fields that\nwill be present in the properties key, as it works with all other\nserializers.
예제:
\nfrom django.core.serializers import serialize\nfrom my_app.models import City\n\nserialize("geojson", City.objects.all(), geometry_field="point", fields=["name"])\nWould output:
\n{\n "type": "FeatureCollection",\n "crs": {"type": "name", "properties": {"name": "EPSG:4326"}},\n "features": [\n {\n "type": "Feature",\n "id": 1,\n "geometry": {"type": "Point", "coordinates": [-87.650175, 41.850385]},\n "properties": {"name": "Chicago"},\n }\n ],\n}\nWhen the fields parameter is not specified, the geojson serializer adds\na pk key to the properties dictionary with the primary key of the\nobject as the value.