如何在django中将布尔值设置为False

Question

我在表单中有一个名为'hof‘的复选框按钮，如果我单击表单中的复选框并发送，它会工作，但如果我取消选中它拒绝发送，我得到的是这个字段是必需的。

，这是我的模型

class CreateSingleSigner(models.Model):
    firstname = models.CharField(max_length = 32)
    middlename = models.CharField(max_length = 32)
    lastname = models.CharField(max_length = 32)
    displayname = models.CharField(max_length = 32)
    era = models.CharField(max_length = 11)
    category = models.CharField(max_length = 32)
    hof = models.BooleanField()
    externallink = models.CharField(max_length = 70)
    loaprice = models.FloatField(max_length = 10)
    basiccertprice = models.FloatField(max_length = 10)
    appraisalcost = models.FloatField(max_length = 10)
    notability = models.CharField(max_length = 32)

这里如果我的观点

def singlesigner(request):
    context = {}
    if request.method == 'POST':
        createsinglesigner_form = CreateSingleSignerForm(data=request.POST)
        if createsinglesigner_form.is_valid():

            createsinglesigner = createsinglesigner_form.save(commit=False)
            createsinglesigner.firstname = request.POST['firstname']
            createsinglesigner.middlename = request.POST['middlename']
            createsinglesigner.lastname = request.POST['lastname']
            createsinglesigner.displayname = request.POST['displayname']
            createsinglesigner.era = request.POST['era']
            createsinglesigner.category = request.POST['category']
            createsinglesigner.hof = request.POST['hof']
            createsinglesigner.externallink = request.POST['externallink']
            createsinglesigner.loaprice = request.POST['loaprice']
            createsinglesigner.basiccertprice = request.POST['basiccertprice']
            createsinglesigner.appraisalcost = request.POST['appraisalcost']
            createsinglesigner.notability = request.POST['notability']

            createsinglesigner_form.save()
        else:
                print createsinglesigner_form.errors
    else:
        # context['createsinglesigner'] = CreateSingleSigner()
        createsinglesigner_form =CreateSingleSignerForm()

    return render(request, "signer/singlesigner.html", {"createsinglesigner_form":createsinglesigner_form})

这是我的表格

class CreateSingleSignerForm(forms.ModelForm):
    firstname = forms.CharField(max_length = 32, required = True, help_text = "firstname")
    middlename = forms.CharField(max_length = 32, required = True, help_text = "middlename")
    lastname = forms.CharField(max_length = 32, required = True, help_text = "lastname")
    displayname = forms.CharField(max_length = 32, required = True, help_text = "displayname")
    era = forms.CharField(max_length = 11, required = True, help_text = "era")
    category = forms.CharField(required = True, help_text = 'category')
    hof = forms.BooleanField(required=False, help_text = 'hall of fame')
    notability = forms.CharField(max_length = 11, required = True, help_text = 'notability')
    externallink = forms.CharField(required = True, help_text = "externallink")
    loaprice = forms.FloatField(required = True, help_text = "loaprice $")
    basiccertprice = forms.FloatField(help_text = "basiccertprice $")
    appraisalcost = forms.FloatField(help_text = "appraisalcost $")

    class Meta:
        model = CreateSingleSigner
        fields = ('firstname',)

Answer 1

试着改变形式

hof = forms.BooleanField(required=False, help_text = 'hall of fame')

至

hof = forms.BooleanField(initial=False, required=False, help_text = 'hall of fame')

Answer 2

您不应该为表单上的BooleanField设置初始值。

您还在使用ModelForm，没有必要在表单中重写模型的逻辑。

forms.py:

class CreateSingleSignerForm(forms.ModelForm):

    class Meta:
        model = CreateSingleSigner
        fields = (
            'hof',
            ...
        )

    # Instantiate the object and override the required setting on hof field:
    def __init__(self, *args, **kwargs):
        super(CreateSingleSignerForm, self).__init__(*args, **kwargs)
        self.fields['hof'].required = True

如果您希望坚持您的代码，那么从forms.Form继承而不是从forms.ModelForm继承，并指示Django保存复选框的未选中状态：

hof = forms.BooleanField(required=True, help_text='Hall of Fame')

在hof中为易读性设置models.py的默认值也是很好的做法。