def database_add(request):
"""
Загрузка координат из *.kml в БД
"""
#Кооординаты Cornfield
if request.method == 'POST':
form = AddField(request.POST, request.FILES)
if form.is_valid():
all_geometry = Cornfield.objects.filter(use_user = request.user)
#fname = 'KML/' + request.FILES['append_field'].name[:-4] + "_" + str(request.user) + "_" + datetime.now().strftime("%d_%m_%Y_%H.%M.%S") + ".kml"
fname = 'KML/' + str(request.user) + "_" + datetime.now().strftime("%d_%m_%Y_%H.%M.%S") + ".kml"
f = open(os.path.join(MEDIA_ROOT, fname), 'wb+')
for chunk in request.FILES['append_field'].chunks():
f.write(chunk)
f.close()
try:
ds = DataSource(os.path.join(MEDIA_ROOT, fname))
#ds = DataSource(os.path.join(MEDIA_ROOT, 'ag_fields3.kml'))
layer = ds[0]
i = 0
for feat in layer:
geom = feat.geom
#print geom
if geom:
new_line = []
for line in geom:
new_point = []
for point in line:
new_point.append(Point(point[0],point[1]))
new_point.append(new_point[0])
new_line = LinearRing(new_point)
if not new_line.ring:
new_point.append(new_point[0])
new_line = LinearRing(new_point)
name = "e%d"%i
poly = Polygon(new_line)
polygon_equals = True
for geom in all_geometry:
if poly.equals_exact(geom.mpoly[0], 0.001):
polygon_equals = False
break
if polygon_equals:
c = Cornfield(use_user = request.user, name_field=name, area = round(poly.area*1000000,2), mpoly = MultiPolygon(poly),
mpoly_coding_paths = encode_pairs(new_line)[0], mpoly_coding_levels = encode_pairs(new_line)[1])
c.save()
i+=1
except:
pass
return redirect('show_map')
