我有一個模型表單 - ClinicallyReportedSample，它鏈接到一個樣本模型。我正在嘗試為 ClinicallyReportedSample 創建一個表單集，其中基于 Sample 的查詢集，顯示特定數量的表單，以便用戶可以添加數據。目前，Sample 模型有條目，但 ClinicallyReportedSample 模型是完全空的：楷模：class Sample(models.Model): request_number = models.PositiveIntegerField() year = models.PositiveIntegerField() class Meta: db_table = "sample" unique_together = (('request_number', 'year'),) def __str__(self): return("%s/%s" %(self.request_number, self.year))class ClinicallyReportedSample(models.Model): sample_id = models.ForeignKey(Sample, on_delete=models.CASCADE, db_column='sample_id') reported = models.BooleanField(default=False) evidence = models.TextField(null=True, blank=True) ... other fields ... class Meta: db_table = "clinically_reported_sample" unique_together = (('sample_id'),) def __str__(self): clinically_reported_sample = str(self.sample_id) return(clinically_reported_sample)我想要在表單集中的 ClinicallyReportedSample 模型表單，它與 Sample 模型的查詢集相關。例如，具有 pk 1、2 和 3 的樣本對象：表格.py：class BaseCRSFormSet(BaseModelFormSet): def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) # self.queryset = ClinicallyReportedVariant.objects.none()class CRSForm(forms.ModelForm): class Meta: model = ClinicallyReportedSample fields = ('sample_id', 'evidence',) def __init__(self, *args, **kwargs): super(CRSForm, self).__init__(*args, **kwargs)所以我嘗試在我的表單集中使用查詢集來做到這一點視圖.py：def get(self, request, *args, **kwargs): sample_obj = Sample.objects.filter(id__in=[1, 2, 3]) formset = modelformset_factory( ClinicallyReportedSample, form=self.crsform, formset=BaseCRSFormSet, extra=3, ) formset = formset(queryset=sample_obj)但這顯示為三種形式，對于所有示例對象，查詢集不起作用。這是解決這個問題的正確方法嗎？
1 回答
守著一只汪
TA貢獻1872條經驗 獲得超4個贊
您需要將默認的 Sample queryset 設置為 none：
class CRSForm(forms.ModelForm):
class Meta:
model = ClinicallyReportedSample
fields = ('sample_id', 'evidence',)
sample_id = forms.ModelChoiceField(queryset=Sample.objects.none())
def __init__(self, *args, **kwargs):
super(CRSForm, self).__init__(*args, **kwargs)
然后當你創建一個表單集實例時，像這樣手動分配查詢集：
def get(self, request, *args, **kwargs):
sample_obj = Sample.objects.filter(id__in=[1, 2, 3])
formset = modelformset_factory(
ClinicallyReportedSample,
form=self.crsform,
formset=BaseCRSFormSet,
extra=3,
)
formset = formset(queryset=sample_obj)
for form in formset:
form.fields['sample_id'].queryset = sample_obj
請注意，您還必須在 POST 函數中手動設置查詢集，否則將無法驗證。
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