TandoorRecipes/cookbook/helper/unit_conversion_helper.py
2023-02-26 09:12:16 +01:00

49 lines
1.6 KiB
Python

def base_conversions():
METRIC_MASS_CONVERSIONS = {
'g': {'base_amount': 1000, 'base_unit': 'mg', 'converted_amount': 1, 'converted_unit': 'g'},
'mg': {'base_amount': 1000, 'base_unit': 'g', 'converted_amount': 1, 'converted_unit': 'kg'},
}
METRIC_LIQUID_CONVERSIONS = [
{'base_amount': 1000, 'base_unit': 'ml', 'converted_amount': 1, 'converted_unit': 'l'},
]
def get_conversions(amount, unit, food):
conversions = []
if unit:
for c in unit.unit_conversion_base_relation.all():
r = _uc_convert(c, amount, unit, food)
if r not in conversions:
conversions.append(r)
for c in unit.unit_conversion_converted_relation.all():
r = _uc_convert(c, amount, unit, food)
if r not in conversions:
conversions.append(r)
return conversions
def _uc_convert(uc, amount, unit, food):
if uc.food is None or uc.food == food:
if unit == uc.base_unit:
return {
'amount': amount * (uc.converted_amount / uc.base_amount),
'unit': {
'id': uc.converted_unit.id,
'name': uc.converted_unit.name,
'plural_name': uc.converted_unit.plural_name
},
}
else:
return {
'amount': amount * (uc.base_amount / uc.converted_amount),
'unit': {
'id': uc.base_unit.id,
'name': uc.base_unit.name,
'plural_name': uc.base_unit.plural_name
},
}