def get_values(self, request, pk):
"""
Calculates the nutritional values for current ingredient and
the given amount and unit.
This function basically just performs a multiplication (in the model), and
is a candidate to be moved to pure AJAX calls, however doing it like this
keeps the logic nicely hidden and respects the DRY principle.
"""
result = {
'energy': 0,
'protein': 0,
'carbohydrates': 0,
'carbohydrates_sugar': 0,
'fat': 0,
'fat_saturated': 0,
'fibres': 0,
'sodium': 0,
'vitamin_a': 0,
'vitamin_c': 0,
'calcium': 0,
'iron': 0,
'alcohol': 0,
'errors': []
}
ingredient = self.get_object()
form = UnitChooserForm(request.GET)
if form.is_valid():
# Create a temporary MealItem object
if form.cleaned_data['unit']:
unit_id = form.cleaned_data['unit'].id
else:
unit_id = None
item = MealItem()
item.ingredient = ingredient
item.weight_unit_id = unit_id
item.amount = form.cleaned_data['amount']
result = item.get_nutritional_values()
for i in result:
result[i] = '{0:f}'.format(result[i])
else:
result['errors'] = form.errors
return Response(result)
def get_values(self, request, pk):
'''
Calculates the nutritional values for current ingredient and
the given amount and unit.
This function basically just performs a multiplication (in the model), and
is a candidate to be moved to pure AJAX calls, however doing it like this
keeps the logic nicely hidden and respects the DRY principle.
'''
result = {
'energy': 0,
'protein': 0,
'carbohydrates': 0,
'carbohydrates_sugar': 0,
'fat': 0,
'fat_saturated': 0,
'fibres': 0,
'sodium': 0,
'errors': []
}
ingredient = self.get_object()
form = UnitChooserForm(request.GET)
if form.is_valid():
# Create a temporary MealItem object
if form.cleaned_data['unit']:
unit_id = form.cleaned_data['unit'].id
else:
unit_id = None
item = MealItem()
item.ingredient = ingredient
item.weight_unit_id = unit_id
item.amount = form.cleaned_data['amount']
result = item.get_nutritional_values()
for i in result:
result[i] = '{0:f}'.format(result[i])
else:
result['errors'] = form.errors
return Response(result)
def ajax_get_ingredient_values(request, pk):
'''
Calculates the nutritional values for the given amount and exercise
'''
result = {
'energy': 0,
'protein': 0,
'carbohydrates': 0,
'carbohydrates_sugar': 0,
'fat': 0,
'fat_saturated': 0,
'fibres': 0,
'sodium': 0,
'errors': []
}
ingredient = get_object_or_404(Ingredient, pk=pk)
if request.method == 'POST':
form = UnitChooserForm(request.POST)
if form.is_valid():
# Create a temporary MealItem object
if form.cleaned_data['unit']:
unit_id = form.cleaned_data['unit'].id
else:
unit_id = None
item = MealItem()
item.ingredient = ingredient
item.weight_unit_id = unit_id
item.amount = form.cleaned_data['amount']
result = item.get_nutritional_values()
else:
result['errors'] = form.errors
return HttpResponse(json.dumps(result, cls=helpers.DecimalJsonEncoder),
'application/json')
def ajax_get_ingredient_values(request, pk):
'''
Calculates the nutritional values for the given amount and exercise
'''
result = {'energy': 0,
'protein': 0,
'carbohydrates': 0,
'carbohydrates_sugar': 0,
'fat': 0,
'fat_saturated': 0,
'fibres': 0,
'sodium': 0,
'errors': []}
ingredient = get_object_or_404(Ingredient, pk=pk)
if request.method == 'POST':
form = UnitChooserForm(request.POST)
if form.is_valid():
# Create a temporary MealItem object
if form.cleaned_data['unit']:
unit_id = form.cleaned_data['unit'].id
else:
unit_id = None
item = MealItem()
item.ingredient = ingredient
item.weight_unit_id = unit_id
item.amount = form.cleaned_data['amount']
result = item.get_nutritional_values()
else:
result['errors'] = form.errors
return HttpResponse(json.dumps(result, cls=helpers.DecimalJsonEncoder),
'application/json')
