pip install django-geojson

# settings.py

INSTALLED_APPS += (
    'djgeojson',
)

from djgeojson.views import GeoJSONLayerView


class MeetingLayer(GeoJSONLayerView):
    model = Meeting
    fields = ('title', 'datetime',)
    # Options
    srid = 4326     # projection
    precision = 4   # float
    simplify = 0.5  # generalization

var layer = L.GeoJSON();
map.addLayer(layer);
$.getJSON('{% url viewname %}', function (data){
    layer.addData(data);
});

{% load geojson_tags %}

var feature = {{ object|geojsonfeature }};

var geom = {{ object.geom|geojsonfeature }};

var collection = {{ object_list|geojsonfeature }};

# settings.py

SERIALIZATION_MODULES = {
    'geojson' : 'djgeojson.serializers'
}

django dumpdata --format=geojson yourapp.Model > export.geojson