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當嘗試添加使用ModelForm和CreateView具有dayplan外鍵的第二個約會（對於相同日期）時，由於DayPlan具有'date'字段是唯一的。Django表格intergrityerror：具有唯一字段的外鍵，唯一約束失敗
使用django-admin創建表單時，此問題不存在。
我試圖從dayplan.date中刪除unique = True以查看會發生什麼 - >每當我添加約會時，即使dayplan.date存在，也會創建新的dayplan。
問題似乎與這些2線：
daydate = DayPlan.objects.filter(date=planned_date)
form.cleaned_data['dayplan'] = daydate
的代碼是在這裏：
class DayPlan(models.Model):
date = models.DateField(unique=True, db_index=True)
comment = models.TextField(null=True, blank=True)
def __str__(self):
return 'Planning voor {}'.format(self.date)
def get_absolute_url(self):
return reverse('organizer_dayplan_detail', kwargs={'pk': self.pk})
class Appointment(models.Model):
comment = models.CharField(null=True, blank=True, max_length=255)
planned_date = models.DateField()
doctor = models.ForeignKey(Doctor)
visited = models.BooleanField(default=False)
dayplan = models.ForeignKey(DayPlan)
class AppointCreate(CreateView):
model = Appointment
form_class = AppointmentForm
template_name = 'organizer/organizer_appointment_create.html'
# initial = {'doctor': 'pk', 'comment': 'test',}
def get_initial(self):
return {
"doctor": self.request.GET.get('doctor')
}
def form_valid(self, form):
planned_date = form.cleaned_data['planned_date']
try:
daydate = DayPlan.objects.filter(date=planned_date)
form.cleaned_data['dayplan'] = daydate
form.instance.save()
except:
daydate = DayPlan.objects.create(date=planned_date)
form.instance.dayplan = daydate
form.instance.save()
return super(AppointCreate, self).form_valid(form)
class AppointmentForm(forms.ModelForm):
class Meta:
model = Appointment
fields = {'comment', 'planned_date', 'doctor', 'visited', 'dayplan'}
widgets = {'visited': forms.HiddenInput(),}
exclude = {'dayplan',}
附：我意識到我不需要在這裏使用「form.instance.save（）」。去除它們沒有效果。
在此先感謝！