所以我试图通过我设置的某些数组中的elif语句来运行我的用户输入。目标是如果在数组中找到输入,则将变量设置为值。现在价值保持None
。我确信这对我来说是个愚蠢的事情,但是我会非常感激任何帮助。
views.py
def fit_guide(request):
if request.method == 'POST':
form = FitGuideSizingForm(request.POST)
chest = request.POST['chest']
waist = request.POST['waist']
hip = request.POST['hip']
if form.is_valid():
chest_size = None
if chest in chest_size_0():
chest_size = 0
elif chest in chest_size_2():
chest_size = 2
elif chest in chest_size_4():
chest_size = 4
elif chest in chest_size_6():
chest_size = 6
elif chest in chest_size_8():
chest_size = 8
elif chest in chest_size_10():
chest_size = 10
elif chest in chest_size_12():
chest_size = 12
elif chest in chest_size_14():
chest_size = 14
elif chest in chest_size_16():
chest_size = 16
elif chest in chest_size_18():
chest_size = 18
elif chest in chest_size_20():
chest_size = 20
elif chest in chest_size_22():
chest_size = 22
elif chest in chest_size_24():
chest_size = 24
elif chest in chest_size_26():
chest_size = 26
elif chest in chest_size_28():
chest_size = 28
print(chest_size)
form = FitGuideSizingForm()
c = {}
c.update(csrf(request))
c.update({'form': form})
return render(request, 'main/fit_guide.html', c)
forms.py
class FitGuideSizingForm(forms.Form):
chest = forms.DecimalField(min_value=29, max_value=60, required=True)
waist = forms.DecimalField(min_value=23, max_value=50, required=True)
hip = forms.DecimalField(min_value=34.5, max_value=58, required=True)
def __init__(self, *args, **kwargs):
super(FitGuideSizingForm, self).__init__(*args, **kwargs)
self.helper = FormHelper()
self.helper.form_id = 'id-fitGuideForm'
self.helper.form_class = 'blueForms'
self.helper.form_method = 'post'
self.helper.form_action = 'submit_survey'
self.helper.add_input(Submit('submit', 'Get Fit Guide!'))
size_arrays.py示例
def chest_size_0():
return [29, 29.1, 29.2, 29.3, 29.4, 29.5, 29.6, 29.7, 29.8, 29.9,
30, 30.1, 30.2, 30.3, 30.4, 30.5, 30.6, 30.7, 30.8, 30.9,
31, 31.1, 31.2, 31.3, 31.4, 31.5, 31.6, 31.7, 31.8, 31.9]
def chest_size_2():
return [32, 32.1, 32.2, 32.3, 32.4, 32.5, 32.6, 32.7, 32.8, 32.9,
33, 33.1, 33.2, 33.3, 33.4]
def chest_size_4():
return [33.5, 33.6, 33.7, 33.8, 33.9, 34, 34.1, 34.2, 34.3, 34.4]
def chest_size_6():
return [34.5, 34.6, 34.7, 34.8, 34.9, 35, 35.1, 35.2, 35.3, 35.4]
etc
etc
答案 0 :(得分:1)
这里有一些问题。
首先,您直接使用request.POST
中的值。那些将永远是字符串。要获取表单中指定类型的值,您应该使用form.cleaned_data
dict。
其次,您的字段是小数,但您的数组包含浮点数。由于浮点不精确,29.1
例如与decimal.Decimal("29.1")
不同。你应该使用一致的类型;十进制可能是最合适的。
第三,这不是最好的方法。使用比较会容易得多:
if Decimal("29.0") <= chest < Decimal("32.0"):
...
elif Decimal("32.0") <= chest < Decimal("33.5"):
...
等等。
答案 1 :(得分:0)
您正在chest
设置request.POST
,它会为您提供字符串值。将其转换为float
,它应该有效。