【发布时间】：2021-06-16 20:29:46
【问题描述】：
我有数据库，我想从查询集中提取特定用户的特定数据。现在我有了这个
查看
def index(request):
customerByName = Customer.objects.get(name='pablo')
shopListById = ShopList.objects.get(transaction_id=1)
shpoListSpecific = customerByName.shoplist_set.all()
specificProducts = shopListById.shoplistproduct_set.all()
context = {'customerByName':customerByName, 'shpoListSpecific':shpoListSpecific, 'shopListById':shopListById,
'specificProducts': specificProducts}
return render(request, 'QuickShopperApp/home.html', context)
模型
class Customer(models.Model):
user = models.OneToOneField(User, null=True, blank=True, on_delete=models.CASCADE)
name = models.CharField(max_length=200, null=True, blank=True)
email = models.CharField(max_length=200, null=True, blank=True)
device = models.CharField(max_length=200, null=True, blank=True)
def __str__(self):
if self.name:
name = self.name
else:
name = self.device
return str(name)
class Product(models.Model):
name = models.CharField(max_length=200, null=True)
def __str__(self):
return self.name
class ShopList(models.Model): # cart
customer = models.ForeignKey(Customer, on_delete=models.SET_NULL, null=True, blank=True)
#product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)
date_ordered = models.DateTimeField(auto_now_add=True)
complete = models.BooleanField(default=False)
transaction_id = models.CharField(max_length=100, null=True)
def __str__(self):
return str(self.id)
class ShopListProduct(models.Model): # each ShopList will have multiple ShopListProduct
product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)
shopList = models.ForeignKey(ShopList, on_delete=models.SET_NULL, null=True) #shoplistitem.shoplist
quantity = models.IntegerField(default=0, null=True, blank=True)
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
return str(self.product)
template.html
<h3>specificProducts: {{specificProducts}}</h3>
在我这边，我看到了特定客户的物品。
具体产品：
我怎样才能只得到苹果、黄瓜、黄瓜？
【问题讨论】：
标签： python django database sqlite django-queryset