Question

需要有关“ ProjectName_id”列中的空值的帮助违反了非空约束，这是django的新增功能我希望我的ProjectName_id（外键）与用户在我的
中选择的ID相同 majordetails = ProjectNameInviToBid.objects.get（id = sid）请帮助我...

我的模型视图

class ProjectNameInviToBid(models.Model):
    ProjectName = models.CharField(max_length=255, verbose_name='Project Name', null=True)
    DateCreated = models.DateField(auto_now=True)

class InviToBid(models.Model):
    today = date.today()
    ProjectName = models.ForeignKey('ProjectNameInviToBid', on_delete=models.CASCADE)
    NameOfFile = models.CharField(max_length=255, verbose_name='Name of File')

我的views.py

def project_name_details(request, sid):

    majordetails = ProjectNameInviToBid.objects.get(id=sid)

    if request.method == 'POST':
        form = invitoBidForm(request.POST, request.FILES)
        if form.is_valid():
            majordetails = InviToBid.ProjectName
            form.save()
            messages.success(request, 'File has been Uploaded')
    else:
        form = invitoBidForm()

    args = {
        'majordetails': majordetails,
        'form': form

    }
    return render(request,'content/invitoBid/bacadmininvitoBid.html', args)

class ProjectNameInviToBidForm(ModelForm):
    class Meta:

        model = ProjectNameInviToBid
        fields = ('ProjectName',)


class invitoBidForm(ModelForm):

    class Meta:

        model = InviToBid
        fields = ('NameOfFile', 'Contract_No', 'Bid_Opening',
                  'Pre_Bid_Conference', 'Non_Refundable_Bidder_Fee',
                  'Delivery_Period',
                  'Pdf_fileinvi')

列“ ProjectName_id”中的空值违反了非空约束

0 个答案: