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