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我以下工作:Django的查詢集許多-2-許多領域
# models.py
class FinancialProduct(models.Model):
active = models.BooleanField(default=True)
businesses = models.ManyToManyField(Business)
name = models.CharField(max_length=40, unique=True)
class Item(models.Model):
main_client = models.ForeignKey(Client)
financial_product = models.ForeignKey(FinancialProduct)
advisor = models.ForeignKey(User, blank=True, null=True)
business = models.ForeignKey(Business)
class Business(models.Model):
active = models.BooleanField(default=True)
name = models.CharField(max_length=40, unique=True)
# forms.py
class ItemForm(ModelForm):
def __init__(self,fpID,*args,**kwargs):
super(ItemForm, self).__init__(*args, **kwargs)
self.fields['advisor'].queryset = User.objects.filter(groups__name='advisor')
self.fields['business'].queryset = Business.objects.filter(financialproduct__businesses=fpID)
class Meta:
model = Item
exclude = ('main_client', 'financial_product')
def CustomSave(self,f,c,u):
idb = self.save(commit=False)
idb.financial_product = f
idb.main_client = c
return idb.save()
我創建了以下數據:
Business(1,'Company1')
Business(1,'Company2')
FinancialProduct(1,'Company1', 'Small Product')
FinancialProduct(1,'Company1,Company2', 'Large Product')
在前端,我得到以下幾點:
Select 'Small Product' > Get ('Company 1', 'Company 1', 'Company 2')
Select 'Large Product' > Get ('Company 1', 'Company 2')
不幸的是,我似乎以錯誤的方式獲取數據。我在做什麼錯在__init__
的第三行?是因爲它是M2M嗎?
它的僞代碼 – Sevenearths