def get_parks(request):
""" Returns parks as JSON based search parameters
"""
querydict = request.GET
kwargs = querydict.dict()
no_map = kwargs.pop('no_map', False)
# FIXME: int() will throw if this arg isn't parseable. That should be handled
page = int(kwargs.pop('page', 1))
# FIXME: int() will throw if this arg isn't parseable. That should be handled
# FIXME: We should figure out what a reasonable default is here.
# *perhaps* we shouldn't do paging if `page` above is not specified?
page_size = int(kwargs.pop('page_size', 15))
user = request.user
slug = kwargs.get('slug', False)
filters = kwargs
try:
parks_filter = Park.objects.filter(**filters)
parks = parks_filter.select_related('parkowner').distinct('name')
parks_pages = Paginator(parks, page_size)
parks_page = parks_pages.page(page)
extent = get_extent_for_openlayers(parks_filter, 26986)
if no_map:
parks_json = {
p.pk: p.to_external_document(user,
include_large=True,
include_extra_info=bool(slug))
for p in parks_page
}
response_json = {
"parks": parks_json,
"pages": parks_pages.num_pages,
"bbox": list(extent.coords)
}
else:
# FIXME: should this even be paged? There's nowhere to put the total # of pages...
response_json = {
p.pk: p.to_external_document(user, include_large=True)
for p in parks_page
}
return HttpResponse(json.dumps(response_json),
mimetype='application/json')
except Exception as e:
# no content
print e
return HttpResponse(str(e), status=204)
def get_parks(request):
""" Returns parks as JSON based search parameters
"""
querydict = request.GET
kwargs = querydict.dict()
no_map = kwargs.pop('no_map', False)
# FIXME: int() will throw if this arg isn't parseable. That should be handled
page = int(kwargs.pop('page', 1))
# FIXME: int() will throw if this arg isn't parseable. That should be handled
# FIXME: We should figure out what a reasonable default is here.
# *perhaps* we shouldn't do paging if `page` above is not specified?
page_size = int(kwargs.pop('page_size', 15))
user = request.user
slug = kwargs.get('slug', False)
filters = kwargs
try:
parks_filter = Park.objects.filter(**filters)
parks = parks_filter.select_related('parkowner').distinct('name')
parks_pages = Paginator(parks, page_size)
parks_page = parks_pages.page(page)
extent = get_extent_for_openlayers(parks_filter, 26986)
if no_map:
parks_json = {p.pk: p.to_external_document(user, include_large=True, include_extra_info=bool(slug)) for p in parks_page}
response_json = {
"parks": parks_json,
"pages": parks_pages.num_pages,
"bbox": list(extent.coords)
}
else:
# FIXME: should this even be paged? There's nowhere to put the total # of pages...
response_json = {p.pk: p.to_external_document(user, include_large=True) for p in parks_page}
return HttpResponse(json.dumps(response_json), mimetype='application/json')
except Exception as e:
# no content
print e
return HttpResponse(str(e), status=204)
def get_parks():
cursor = connection.cursor()
parks_needing_images = Park.objects.annotate(num_photos=Count("images")).filter(num_photos__lt=MIN_PICTURE_COUNT)
query_extent = get_extent_for_openlayers(parks_needing_images, 26986)
print query_extent
nrow = int((abs(query_extent[1][1]) - abs(query_extent.coords[0][1])) / BBOW_H)
ncol = int((abs(query_extent[0][0]) - abs(query_extent.coords[1][0])) / BBOX_W)
### fishnet function
query = """CREATE OR REPLACE FUNCTION ST_CreateFishnet(
nrow integer, ncol integer,
xsize float8, ysize float8,
x0 float8 DEFAULT 0, y0 float8 DEFAULT 0,
OUT "row" integer, OUT col integer,
OUT geom geometry)
RETURNS SETOF record AS
$$
SELECT i + 1 AS row, j + 1 AS col, ST_Translate(cell, j * $3 + $5, i * $4 + $6) AS geom
FROM generate_series(0, $1 - 1) AS i,
generate_series(0, $2 - 1) AS j,
(
SELECT ('POLYGON((0 0, 0 '||$4||', '||$3||' '||$4||', '||$3||' 0,0 0))')::geometry AS cell
) AS foo;
$$ LANGUAGE sql IMMUTABLE STRICT;
SELECT bbox FROM
(SELECT ST_Transform(ST_SetSRID(cells.geom,4326),26986) AS bbox
FROM ST_CreateFishnet({0}, {1}, {2},{3}, {4}, {5}) AS cells) AS results,
parks_park
""".format(
nrow, ncol, BBOX_W, BBOW_H, query_extent.coords[0][0], query_extent.coords[0][1]
)
print query
cursor.execute(query)
for row in cursor.fetchall():
print row
def get_parks():
cursor = connection.cursor()
parks_needing_images = Park.objects.annotate(num_photos=Count('images')).filter(num_photos__lt=MIN_PICTURE_COUNT)
query_extent = get_extent_for_openlayers(parks_needing_images, 26986)
print query_extent
nrow = int((abs(query_extent[1][1]) - abs(query_extent.coords[0][1]))/BBOW_H)
ncol = int((abs(query_extent[0][0]) - abs(query_extent.coords[1][0]))/BBOX_W)
### fishnet function
query = """CREATE OR REPLACE FUNCTION ST_CreateFishnet(
nrow integer, ncol integer,
xsize float8, ysize float8,
x0 float8 DEFAULT 0, y0 float8 DEFAULT 0,
OUT "row" integer, OUT col integer,
OUT geom geometry)
RETURNS SETOF record AS
$$
SELECT i + 1 AS row, j + 1 AS col, ST_Translate(cell, j * $3 + $5, i * $4 + $6) AS geom
FROM generate_series(0, $1 - 1) AS i,
generate_series(0, $2 - 1) AS j,
(
SELECT ('POLYGON((0 0, 0 '||$4||', '||$3||' '||$4||', '||$3||' 0,0 0))')::geometry AS cell
) AS foo;
$$ LANGUAGE sql IMMUTABLE STRICT;
SELECT bbox FROM
(SELECT ST_Transform(ST_SetSRID(cells.geom,4326),26986) AS bbox
FROM ST_CreateFishnet({0}, {1}, {2},{3}, {4}, {5}) AS cells) AS results,
parks_park
""".format(nrow,ncol,BBOX_W, BBOW_H, query_extent.coords[0][0],query_extent.coords[0][1])
print query
cursor.execute(query);
for row in cursor.fetchall():
print row
