Django的模型ManyToManyField字段加入

Question

--models.py-- 

class Products(models.Model): 
    name= models.CharField(max_length=120, unique=True) 
    slug = models.SlugField(unique=True) 
    price = models.IntegerField(default=100) 
    image1 = models.ImageField(upload_to='static/images/home', blank=True, null=True) 


class Cart(models.Model): 
    user = models.ForeignKey(User, null=True, blank=True) 
    product = models.ManyToManyField(Products, blank=True) 



--views.py-- 

@login_required 
def cart(request): 
    try: 
     cart_user = Cart.objects.filter(user = request.user) 
    except: 
     cart_user = False 

    if cart_user != False: 
     j = Products.objects.filter(pk=Cart.objects.filter(user=request.user)) #Not getting results in j 

了，我想这是由用户表单车型号选择时会记录他（或她）的产品清单。 如何申请加入两种机型，使我得到的所有产品列表在Cart.product模型中的'p'变量中。谢谢

Answer 1

尚王对模型命名是正确的。我们来使用这些。

class Product(models.Model): 
    name= models.CharField(max_length=120, unique=True) 
    slug = models.SlugField(unique = True) 
    price = models.IntegerField(default=100) 
    image1 = models.ImageField(upload_to='static/images/home',blank=True,null=True) 

class Cart(models.Model): 
    user = models.ForeignKey(User,null=True, blank=True) 
    products = models.ManyToManyField(Product, blank=True) 

现在你可以使用这样的过滤器。

products = Product.objects.filter(cart__user__id=1) 

carts = Cart.objects.filter(articles__name__startswith="Something").distinct()