def get_study_region_info(request):
"""
For a given study region id, retrieve
total population, total grid count and bounding box
:param sr_id: study region id
:return: json object containing tot_pop, tot_grid_count, bounding_box
"""
sr_id = request.GET.get('sr_id')
if sr_id:
try:
sr_id = int(sr_id)
except ValueError:
msg = 'Please provide a valid (numeric) study region id'
response = HttpResponse(msg, status="400")
return response
else:
msg = 'Please provide a study region id (numeric parameter sr_id)'
response = HttpResponse(msg, status="400")
return response
StudyRegionInfoRecord = namedtuple(
'StudyRegionInfoRecord', 'tot_pop tot_grid_count bounding_box')
sr_info = []
for info in map(StudyRegionInfoRecord._make, util._get_study_region_info(
sr_id)):
sr_info.append(dict(info._asdict()))
assert len(sr_info) == 1, ('_get_study_region_info(sr_id) returned '
'%d rows. It should return one') % len(sr_info)
response_data = json.dumps(sr_info[0])
response = HttpResponse(response_data, mimetype='text/json')
return response
def get_study_region_info(request):
"""
For a given study region id, retrieve
total population, total grid count and bounding box
:param sr_id: study region id
:return: json object containing tot_pop, tot_grid_count, bounding_box
"""
sr_id = request.GET.get('sr_id')
if sr_id:
try:
sr_id = int(sr_id)
except ValueError:
msg = 'Please provide a valid (numeric) study region id'
response = HttpResponse(msg, status="400")
return response
else:
msg = 'Please provide a study region id (numeric parameter sr_id)'
response = HttpResponse(msg, status="400")
return response
StudyRegionInfoRecord = namedtuple('StudyRegionInfoRecord',
'tot_pop tot_grid_count bounding_box')
sr_info = []
for info in map(StudyRegionInfoRecord._make,
util._get_study_region_info(sr_id)):
sr_info.append(dict(info._asdict()))
assert len(
sr_info) == 1, ('_get_study_region_info(sr_id) returned '
'%d rows. It should return one') % len(sr_info)
response_data = json.dumps(sr_info[0])
response = HttpResponse(response_data, mimetype='text/json')
return response
def _tot_grid_count_valid(sr_id):
StudyRegionInfoRecord = namedtuple("StudyRegionInfoRecord", "tot_pop tot_grid_count bounding_box")
sr_info = []
for info in map(StudyRegionInfoRecord._make, util._get_study_region_info(sr_id)):
sr_info.append(dict(info._asdict()))
assert len(sr_info) == 1, ("_get_study_region_info(sr_id) returned " "%d rows. It should return one") % len(
sr_info
)
sr_info = sr_info[0]
if sr_info["tot_grid_count"] > settings.EXPOSURE_MAX_TOT_GRID_COUNT:
msg = (
"The export can not be performed because the "
"total grid count for study region id %s exceeds the "
"threshold (%s > %s)"
) % (sr_id, sr_info["tot_grid_count"], settings.EXPOSURE_MAX_TOT_GRID_COUNT)
return False, msg
return True, ""
def _tot_grid_count_valid(sr_id):
StudyRegionInfoRecord = namedtuple('StudyRegionInfoRecord',
'tot_pop tot_grid_count bounding_box')
sr_info = []
for info in map(StudyRegionInfoRecord._make,
util._get_study_region_info(sr_id)):
sr_info.append(dict(info._asdict()))
assert len(
sr_info) == 1, ('_get_study_region_info(sr_id) returned '
'%d rows. It should return one') % len(sr_info)
sr_info = sr_info[0]
if sr_info['tot_grid_count'] > settings.EXPOSURE_MAX_TOT_GRID_COUNT:
msg = ('The export can not be performed because the '
'total grid count for study region id %s exceeds the '
'threshold (%s > %s)') % (sr_id, sr_info['tot_grid_count'],
settings.EXPOSURE_MAX_TOT_GRID_COUNT)
return False, msg
return True, ''
