Python mongoengine嵌入式字段更新
这是我的模式Python mongoengine嵌入式字段更新,python,mongodb,mongoengine,Python,Mongodb,Mongoengine,这是我的模式 class Url_per_date(EmbeddedDocument): date = DateTimeField() count = IntField(default=0) class Daily_visit(Document): domain = StringField() count = IntField(default=0) per_date = ListField(EmbeddedDocumentField('Url_per_d
class Url_per_date(EmbeddedDocument):
date = DateTimeField()
count = IntField(default=0)
class Daily_visit(Document):
domain = StringField()
count = IntField(default=0)
per_date = ListField(EmbeddedDocumentField('Url_per_date'))
我有这样的收藏:
{
"_id" : ObjectId("51c97e685aa3b3414c7e406a"),
"_types" : "Daily_visit",
"count" : 1,
"domain" : "yahoo.com",
"per_date" : {
"count" : 1,
"date" : ISODate("2013-05-20T00:00:00Z")
}
}
我需要按日期范围更新yahoo.com。如果per_date没有ISODate(“2013-05-20T00:00:00Z”),我需要创建它,如果我有它inc_count=1。首先,您的结果必须是这样的
{
"_id" : ObjectId("51c97e685aa3b3414c7e406a"),
"_types" : "Daily_visit",
"count" : 1,
"domain" : "yahoo.com",
"per_date" : [{
"count" : 1,
"date" : ISODate("2013-05-20T00:00:00Z")
}]
}
today = datetime.today()
try:
yahoo_obj = Daily_visit.objects.get(domain="yahoo.com", per_date__date=date)
yahoo_obj.per_date[-1].count += 1
except:
yahoo_obj = Daily_visit.objects.get(domain="yahoo.com")
yahoo_obj.per_date = .... # just append new list
如何创建日期?为今天创建一个新数据库,并选择如下数据库
{
"_id" : ObjectId("51c97e685aa3b3414c7e406a"),
"_types" : "Daily_visit",
"count" : 1,
"domain" : "yahoo.com",
"per_date" : [{
"count" : 1,
"date" : ISODate("2013-05-20T00:00:00Z")
}]
}
today = datetime.today()
try:
yahoo_obj = Daily_visit.objects.get(domain="yahoo.com", per_date__date=date)
yahoo_obj.per_date[-1].count += 1
except:
yahoo_obj = Daily_visit.objects.get(domain="yahoo.com")
yahoo_obj.per_date = .... # just append new list
在MongoEngine中,通过用双下划线替换点符号来引用嵌入式字段: 嵌入文档上的字段也可以使用字段查找语法来引用,方法是使用双下划线代替对象属性访问语法中的点: