def update_fuel(self, title, vehicle=None, record=None):
'''
Create or update a fuel record
'''
print('\n{} Fuel Record for {}:'.format(title, vehicle['reg_no']))
last = None
# are we adding a new one or updating an old one?
if (record == None):
# adding new, so get the previous value.
last = FN.last_fuel(vehicle)
record = FN.frec.copy()
# set reg for record
record['vehicle_id'] = vehicle['vehicle_id']
record['date'] = FN.time_now()
value = input('Date ({}):'.format(FN.to_date(record['date'])))
if value:
record['date'] = FN.to_seconds(value)
value = input('Litres ({}):'.format(record['litres']))
if value:
record['litres'] = float(value)
value = input('Price per Litre ({}):'.format(record['ppl']))
if value:
record['ppl'] = float(value)
value = input('Cost ({}):'.format(record['cost']))
if value:
record['cost'] = float(value)
value = input('Odometer ({}):'.format(record['odo']))
if value:
record['odo'] = int(value)
calc_trip = record['trip']
if last:
calc_trip = record['odo'] - last['odo']
trip = input('Trip ({0}):'.format(calc_trip))
if trip:
record['trip'] = float(trip)
else:
record['trip'] = calc_trip
value = input('Notes ({}):'.format(record['notes']))
if value:
record['notes'] = value
value = input('Fuel Type ({}):'.format(record['fuel_type']))
if value:
record['fuel_type'] = value
mpg = FN.update_fuel(vehicle, record)
print('\nCalculated MPG: {:.2f}'.format(mpg))
def query(self, tbl, record):
'''
Handler for data query.
Uses form to order output
'''
form = FN.forms[tbl]
for element in form:
label = string.capwords(element.replace('_', ' '))
if element.find('date') != -1:
e = input('{1} ({0}):'.format(FN.to_date(record[element]), label))
else:
e = input('{1} ({0}):'.format(record[element], label))
if e:
if element.find('date') != -1:
record[element] = FN.to_seconds(e)
else:
record[element] = e
