我正在制作一款django应用程序,以浏览不同市场的可用产品。我从JSON网址Feed获取模型的数据,我不确定将这些数据转换为模型的最佳方法,因为单个市场的Feed可以包含超过5万个项目。
模特 - 随时建议对这些进行任何改进
# Details of a sellable products
class Product(models.Model):
item = models.IntegerField(primary_key=True, auto_created=False)
name = models.CharField(max_length=40)
# Market where products can be bought, some markets will cater to multiple suburbs.
class Market(models.Model):
id = models.IntegerField(primary_key=True, auto_created=True)
name = models.CharField(max_length=40)
# Nearby suburbs can share the one market
class Suburb(models.Model):
name = models.CharField(max_length=30)
market = models.ForeignKey(Market, on_delete=models.SET_NULL, null=True)
# Actual product for sale
class ProductForSale(models.Model):
sale = models.IntegerField(primary_key=True)
product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)
cost = models.IntegerField(default=1)
owner = models.CharField(max_length=30)
quantity = models.IntegerField(default=1)
market = models.ForeignKey(Market,on_delete=models.SET_NULL, null=True )
市场饲料产品示例
"market_products": [
{
"id":11654,
"item":123,
"owner":"Bob",
"suburb":"Springvale",
"cost":3,
"quantity":1,
},
{
"id":11655,
"item":123,
"owner":"Sarah",
"suburb":"Sunnyville",
"cost":5,
"quantity":2,
},
这就是我尝试填充ProductForSale模型的方法 - 我不知道这是否是产品FK的正确方法,或者如何将郊区链接到其市场FK
markets = Market.objects.all()
for market in markets:
url = "jsonurl"
response = urllib.request.urlopen(url)
data = json.loads(response.read())
for entry in data['market_products']:
new_product_sale = ProductForSale.objects.create(
product = Product.objects.get(item=entry['item']),
cost = entry['cost'],
owner = entry['owner'],
quantity = entry['quantity']
)
new_product_sale.save()
我是否应该为每种市场产品创建一个单独的模型,或者将它们全部存放在一个模型中是否合适?
答案 0 :(得分:0)
结束所有市场产品的一种型号,至今尚未遇到任何问题。