Django provider for QGIS

This is currently proof of concept / work in progress!

Django Web framework vector data provider for QGIS

Supported capabilities:

• SelectAtId (It means that editing is not yet supported)

Supported Django field types:

• BooleanField
• NullBooleanField
• SmallIntegerField
• IntegerField
• BigIntegerField
• FloatField
• DecimalField
• CharField
• TextField
• DateField
• Time
• DateTime

Example in QGIS Python console

Django provider and Django project must be in PYTHONPATH

import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "project.settings")
import django
from djangoprovider import register_django_provider
# noinspection PyUnresolvedReferences
from qgis.core import QgsVectorLayer
# noinspection PyUnresolvedReferences
from qgis.core import QgsProject
register_django_provider()
django.setup(set_prefix=False)
layer = QgsVectorLayer('basic.point', 'test', 'django')
QgsProject.instance().addMapLayer(layer)

Example in Django view

Simple wms server

# noinspection PyUnresolvedReferences
from qgis.core import QgsApplication
# noinspection PyUnresolvedReferences
from qgis.server import QgsServer, QgsBufferServerRequest, QgsBufferServerResponse
from django.http import HttpResponse
from djangoprovider import register_django_provider
# TODO: how to manage QgsApplication?
qgs = QgsApplication([], False)
qgs.initQgis()


def ows_server(request):
    register_django_provider()
    query_string = request.build_absolute_uri() + '&MAP=/path/to/map.qgs'
    qgis_request = QgsBufferServerRequest(query_string)
    qgis_response = QgsBufferServerResponse()
    server = QgsServer()
    server.handleRequest(qgis_request, qgis_response)
    # TODO: missing content type
    return HttpResponse(bytes(qgis_response.body()))

Local server test

There is a small test Django project in test/project. You can run devel server and test QGIS server with Django data.

• Ensure that all libs and Python modules are in path. Set LD_LIBRARY_PATH and PYTHONPATH if necessary.
• Go to test/project
• Run manage.py generate_data, it will generate few points in basic.point model.
• Start devel server by manage.py runserver

Now the server should be running and it should be possible to access Django data through QGIS WMS server:

• http://127.0.0.1:8000/wms/?SERVICE=WMS&REQUEST=GetCapabilities