def get_interval_and_start_time(request):
context = {}
context = get_names_for_all_column_headers()
move_interval = request.GET.get('move_interval', None)
datetime_start = request.GET.get('datetime_start', None)
interval = request.GET.get('interval', None)
if not interval:
interval = 10*60 #default interval is 10 minutes
else:
interval = int(interval)*60 #converting minutes (more suitable) to seconds
if not datetime_start or datetime_start.lower() == 'now':
datetime_start = utils.strftime(utils.get_local_now(), "%Y-%m-%d %H:%M:%S")
start_timestamp = utils.datelocal_totimestamp(utils.strptime(datetime_start, "%Y-%m-%d %H:%M:%S"))
if move_interval and move_interval == 'back':
start_timestamp -= interval
elif move_interval and move_interval == 'forward':
start_timestamp += interval
context['datetime_start'] = datetime_start
context['start_timestamp'] = start_timestamp
context['interval'] = interval
return context
def set_time_parameters(start_timestamp, end_timestamp, datetime_from, datetime_to, interval, move_interval):
# dictionary used to update time fields in form submited with back or forward buttons
update_form_time = {}
update_form_time['datetime_start'] = None
update_form_time['datetime_end'] = None
update_form_time['start_timestamp'] = None
update_form_time['end_timestamp'] = None
# A good URL has start and end_timestamp filled in.
# If not, we proceed through a hiearchy to determine the time to use
if start_timestamp and end_timestamp:
update_form_time['start_timestamp'] = start_timestamp
start_timestamp = int(start_timestamp)
update_form_time['end_timestamp'] = end_timestamp
end_timestamp = int(end_timestamp)
else:
# data type conversions
if start_timestamp:
update_form_time['start_timestamp'] = start_timestamp
start_timestamp = int(start_timestamp)
if end_timestamp:
update_form_time['end_timestamp'] = end_timestamp
if end_timestamp.lower() == "now":
end_timestamp = int(time.time()) # set end_timestamp to now
else:
end_timestamp = int(end_timestamp)
if interval:
interval = int(interval)
if datetime_to.lower() == "now":
datetime_to = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S") # set datetime_to to current datetime
# datetime format trumps UNIX timestamp format if both are given
# datetimes
if datetime_from and datetime_to:
start_timestamp = utils.datelocal_totimestamp(utils.strptime(datetime_from, '%Y-%m-%d %H:%M:%S'))
end_timestamp = utils.datelocal_totimestamp(utils.strptime(datetime_to, '%Y-%m-%d %H:%M:%S'))
elif datetime_from and interval:
update_form_time['datetime_start'] = datetime_from
start_timestamp = utils.datelocal_totimestamp(utils.strptime(datetime_from, '%Y-%m-%d %H:%M:%S'))
end_timestamp = start_timestamp + interval
elif datetime_to and interval:
update_form_time['datetime_end'] = datetime_to
end_timestamp = utils.datelocal_totimestamp(utils.strptime(datetime_to, '%Y-%m-%d %H:%M:%S'))
start_timestamp = end_timestamp - interval
# UNIX timestamps
elif start_timestamp and end_timestamp:
pass
elif start_timestamp and interval:
end_timestamp = start_timestamp + interval
elif end_timestamp and interval:
start_timestamp = end_timestamp - interval
else:
return (0,0)
#return HttpResponseBadRequest("Please double check your date/time values.") # this doesn't work - what to do instead?
# back or forward buttons
interval = end_timestamp - start_timestamp # TOOD: get rid of and interval once i determine how interval is taken care of
if move_interval and interval:
if move_interval == 'back':
start_timestamp -= interval
end_timestamp -= interval
elif move_interval == 'forward':
start_timestamp += interval
end_timestamp += interval
if update_form_time['start_timestamp'] and update_form_time['end_timestamp']:
update_form_time['start_timestamp'] = start_timestamp
update_form_time['end_timestamp'] = end_timestamp
else:
if update_form_time['datetime_start'] and interval:
update_form_time['datetime_start'] = datetime.datetime.fromtimestamp(start_timestamp).strftime('%Y-%m-%d %H:%M:%S')
elif update_form_time['datetime_end'] and interval:
update_form_time['datetime_end'] = datetime.datetime.fromtimestamp(end_timestamp).strftime('%Y-%m-%d %H:%M:%S')
elif update_form_time['start_timestamp'] and interval:
update_form_time['start_timestamp'] = start_timestamp
elif update_form_time['end_timestamp'] and interval:
update_form_time['end_timestamp'] = end_timestamp
return (start_timestamp, end_timestamp, update_form_time)
