我有一对多关系表。这是我的模特
class Pointofsale(models.Model):
official_receipt = models.CharField(max_length=250,blank=False,null=False)
transaction_number = models.CharField(max_length=250,unique=True)
company = models.ForeignKey("User_company")
customer = models.ForeignKey("Customer")
class Pointofsale_details(models.Model):
pointofsale = models.ForeignKey(Pointofsale, related_name='pointofsale_details')
item = models.ForeignKey("Inventory")
quantity = models.DecimalField(max_digits = 19, decimal_places = 6, default = 0.0)
我想用这种格式的物品获得销售
{official_receipt:100,..等,pointofsale_details:[{item1},{item2}]}
OR(用于汇总报告)
[{official_receipt:100,..等,pointofsale_details:[{item1},{item2}]},{official_receipt:100,..等,pointofsale_details:[{item1},{item2}]}]
我为单个查询尝试了此查询,但无济于事:
transaction_details = Pointofsale.objects.filter(company=get_current_company(request)).prefetch_related('pointofsale_details')
我收到此错误
'exceptions.NameError'对象不支持项目分配
这是处理一对多关系的正确或正确方法吗? 我错过了什么?
如果不清楚,请随时在下面发表评论,以便我可以改进我的问题。谢谢!
干杯!
def get_current_company(request,company_obj = False):
company = request.session.get('company_id',None)
return company
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