我有一个朋友列表(对象ID列表)和一个搜索查询。我想搜索我的朋友,其名字首先是,就像搜索查询一样。我可以看到我需要使用map / reduce,但我不会想到如何做到这一点。
class UserAccount(Document):
first_name = StringField(max_length = 20)
last_name = StringField(max_length = 20)
user_name = StringField(max_length = 20)
email = EmailField()
password = StringField(max_length = 20)
friends = ListField(ReferenceField('self'))
# List Of Friends IDs
friends = [ObjectId("5278a1821d41c80d7a3ed4ec"), ObjectId("5278a1821d41c80d7a3ed4fe"),
ObjectId("5278a1821d41c80d7a3ed4aa"), ObjectId("5278a1821d41c80d7a3ed4bb")]
# Assume a search query.
search_query = 'some-name'
regex = re.compile('^' + re.escape(search_query))
users = UserAccount._get_collection()
result = users.find(
{
"_id" : friends[0],
"first_name" : regex
})
是否感谢任何帮助或参考?
答案 0 :(得分:1)
不需要减少地图 - 这应该找到所有匹配的朋友:
UserAccount.objects.filter(pk__in=friends, name=regex)