def test_simplify_geojson(self):
fn = functions.AsGeoJSON(query.Simplify(
functions.Transform('geom', self.srid), self.tol),
precision=2)
sqs = self.qs.all().annotate(geojson=fn)
geom = geos.GEOSGeometry(sqs[0].geojson, self.srid)
source = self.qs[0].geom
self.assertNotEqual(geom, source)
self.assertNotEqual(geom.srid, source.srid)
self.assertLess(geom.num_coords, source.num_coords)
def test_asgeojson(self):
# Only PostGIS and SpatiaLite support GeoJSON.
if not connection.ops.geojson:
with self.assertRaises(NotImplementedError):
list(
Country.objects.annotate(
json=functions.AsGeoJSON('mpoly')))
return
pueblo_json = '{"type":"Point","coordinates":[-104.609252,38.255001]}'
houston_json = (
'{"type":"Point","crs":{"type":"name","properties":'
'{"name":"EPSG:4326"}},"coordinates":[-95.363151,29.763374]}')
victoria_json = (
'{"type":"Point","bbox":[-123.30519600,48.46261100,-123.30519600,48.46261100],'
'"coordinates":[-123.305196,48.462611]}')
chicago_json = (
'{"type":"Point","crs":{"type":"name","properties":{"name":"EPSG:4326"}},'
'"bbox":[-87.65018,41.85039,-87.65018,41.85039],"coordinates":[-87.65018,41.85039]}'
)
# Precision argument should only be an integer
with self.assertRaises(TypeError):
City.objects.annotate(
geojson=functions.AsGeoJSON('point', precision='foo'))
# Reference queries and values.
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 0)
# FROM "geoapp_city" WHERE "geoapp_city"."name" = 'Pueblo';
self.assertJSONEqual(
pueblo_json,
City.objects.annotate(geojson=functions.AsGeoJSON('point')).get(
name='Pueblo').geojson)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 2) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we want to include the CRS by using the `crs` keyword.
self.assertJSONEqual(
houston_json,
City.objects.annotate(
json=functions.AsGeoJSON('point', crs=True)).get(
name='Houston').json)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 1) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we include the bounding box by using the `bbox` keyword.
self.assertJSONEqual(
victoria_json,
City.objects.annotate(
geojson=functions.AsGeoJSON('point', bbox=True)).get(
name='Victoria').geojson)
# SELECT ST_AsGeoJson("geoapp_city"."point", 5, 3) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Chicago';
# Finally, we set every available keyword.
self.assertJSONEqual(
chicago_json,
City.objects.annotate(geojson=functions.AsGeoJSON(
'point', bbox=True, crs=True, precision=5)).get(
name='Chicago').geojson)
def test_geometry_field_source(self):
response = self.client.get('/locations/', {'format': 'geojson', 'page': 1})
context = {k: v for k, v in response.renderer_context.items()
if k in ('request', 'view')}
serializer = LocationFeatureSerializer(
Location.objects.annotate(geojson=functions.AsGeoJSON('geom')),
many=True, context=context)
fields = serializer.child.fields
self.assertEqual(fields['geom'].source, 'geojson')
# Test serializing paginated objects.
page = response.renderer_context['view'].paginator.page
serializer = LocationFeatureSerializer(
page, many=True, context=context)
fields = serializer.child.fields
self.assertEqual(fields['geom'].source, 'geojson')
def test_geojson_response(self):
gj = self.qs.annotate(geojson=sqlfn.AsGeoJSON(
'geom', precision=self.precision))[0].geojson
expected = json.loads(gj)
with self.assertNumQueries(1):
response = self.client.get(self.url, {
'format': 'geojson',
'precision': self.precision
})
self.assertEqual(response.status_code, 200)
feature = response.json()
self.assertEqual(feature['geometry'], expected)
self.assertEqual(feature['type'], 'Feature')
# Be sure we get geojson returned from SQL function call, not GEOS.
sqlformat = '{"type":"Polygon","coordinates":[[['
self.assertContains(response, 'geometry": %s' % sqlformat)
def test_asgeojson(self):
if not connection.features.has_AsGeoJSON_function:
with self.assertRaises(NotSupportedError):
list(
Country.objects.annotate(
json=functions.AsGeoJSON("mpoly")))
return
pueblo_json = '{"type":"Point","coordinates":[-104.609252,38.255001]}'
houston_json = json.loads(
'{"type":"Point","crs":{"type":"name","properties":'
'{"name":"EPSG:4326"}},"coordinates":[-95.363151,29.763374]}')
victoria_json = json.loads(
'{"type":"Point",'
'"bbox":[-123.30519600,48.46261100,-123.30519600,48.46261100],'
'"coordinates":[-123.305196,48.462611]}')
chicago_json = json.loads(
'{"type":"Point","crs":{"type":"name","properties":{"name":"EPSG:4326"}},'
'"bbox":[-87.65018,41.85039,-87.65018,41.85039],'
'"coordinates":[-87.65018,41.85039]}')
if "crs" in connection.features.unsupported_geojson_options:
del houston_json["crs"]
del chicago_json["crs"]
if "bbox" in connection.features.unsupported_geojson_options:
del chicago_json["bbox"]
del victoria_json["bbox"]
if "precision" in connection.features.unsupported_geojson_options:
chicago_json["coordinates"] = [-87.650175, 41.850385]
# Precision argument should only be an integer
with self.assertRaises(TypeError):
City.objects.annotate(
geojson=functions.AsGeoJSON("point", precision="foo"))
# Reference queries and values.
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 0)
# FROM "geoapp_city" WHERE "geoapp_city"."name" = 'Pueblo';
self.assertJSONEqual(
pueblo_json,
City.objects.annotate(geojson=functions.AsGeoJSON("point")).get(
name="Pueblo").geojson,
)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 2) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we want to include the CRS by using the `crs` keyword.
self.assertJSONEqual(
City.objects.annotate(
json=functions.AsGeoJSON("point", crs=True)).get(
name="Houston").json,
houston_json,
)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 1) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we include the bounding box by using the `bbox` keyword.
self.assertJSONEqual(
City.objects.annotate(
geojson=functions.AsGeoJSON("point", bbox=True)).get(
name="Victoria").geojson,
victoria_json,
)
# SELECT ST_AsGeoJson("geoapp_city"."point", 5, 3) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Chicago';
# Finally, we set every available keyword.
# MariaDB doesn't limit the number of decimals in bbox.
if connection.ops.mariadb:
chicago_json["bbox"] = [
-87.650175, 41.850385, -87.650175, 41.850385
]
try:
self.assertJSONEqual(
City.objects.annotate(geojson=functions.AsGeoJSON(
"point", bbox=True, crs=True, precision=5)).get(
name="Chicago").geojson,
chicago_json,
)
except AssertionError:
# Give a second chance with different coords rounding.
chicago_json["coordinates"][1] = 41.85038
self.assertJSONEqual(
City.objects.annotate(geojson=functions.AsGeoJSON(
"point", bbox=True, crs=True, precision=5)).get(
name="Chicago").geojson,
chicago_json,
)
def test_asgeojson(self):
if not connection.features.has_AsGeoJSON_function:
with self.assertRaises(NotSupportedError):
list(
Country.objects.annotate(
json=functions.AsGeoJSON('mpoly')))
return
pueblo_json = '{"type":"Point","coordinates":[-104.609252,38.255001]}'
houston_json = json.loads(
'{"type":"Point","crs":{"type":"name","properties":'
'{"name":"EPSG:4326"}},"coordinates":[-95.363151,29.763374]}')
victoria_json = json.loads(
'{"type":"Point","bbox":[-123.30519600,48.46261100,-123.30519600,48.46261100],'
'"coordinates":[-123.305196,48.462611]}')
chicago_json = json.loads(
'{"type":"Point","crs":{"type":"name","properties":{"name":"EPSG:4326"}},'
'"bbox":[-87.65018,41.85039,-87.65018,41.85039],"coordinates":[-87.65018,41.85039]}'
)
# MySQL and Oracle ignore the crs option.
if mysql or oracle:
del houston_json['crs']
del chicago_json['crs']
# Oracle ignores also the bbox and precision options.
if oracle:
del chicago_json['bbox']
del victoria_json['bbox']
chicago_json['coordinates'] = [-87.650175, 41.850385]
# Precision argument should only be an integer
with self.assertRaises(TypeError):
City.objects.annotate(
geojson=functions.AsGeoJSON('point', precision='foo'))
# Reference queries and values.
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 0)
# FROM "geoapp_city" WHERE "geoapp_city"."name" = 'Pueblo';
self.assertJSONEqual(
pueblo_json,
City.objects.annotate(geojson=functions.AsGeoJSON('point')).get(
name='Pueblo').geojson)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 2) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we want to include the CRS by using the `crs` keyword.
self.assertJSONEqual(
City.objects.annotate(
json=functions.AsGeoJSON('point', crs=True)).get(
name='Houston').json,
houston_json,
)
# SELECT ST_AsGeoJson("geoapp_city"."point", 8, 1) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Houston';
# This time we include the bounding box by using the `bbox` keyword.
self.assertJSONEqual(
City.objects.annotate(
geojson=functions.AsGeoJSON('point', bbox=True)).get(
name='Victoria').geojson,
victoria_json,
)
# SELECT ST_AsGeoJson("geoapp_city"."point", 5, 3) FROM "geoapp_city"
# WHERE "geoapp_city"."name" = 'Chicago';
# Finally, we set every available keyword.
# MariaDB doesn't limit the number of decimals in bbox.
if mariadb:
chicago_json['bbox'] = [
-87.650175, 41.850385, -87.650175, 41.850385
]
self.assertJSONEqual(
City.objects.annotate(geojson=functions.AsGeoJSON(
'point', bbox=True, crs=True, precision=5)).get(
name='Chicago').geojson,
chicago_json,
)