Python Mongoengine可以更好地查询以更新列表字段中的嵌入文档
下面是我编写的函数,它将会话文档中某个成员的成员嵌入文档的“new_messages”标志设置为truePython Mongoengine可以更好地查询以更新列表字段中的嵌入文档,python,mongodb,django-rest-framework,mongodb-query,mongoengine,Python,Mongodb,Django Rest Framework,Mongodb Query,Mongoengine,下面是我编写的函数,它将会话文档中某个成员的成员嵌入文档的“new_messages”标志设置为true def check_and_update_new_messages_flag(self, pk, user): conversation = Conversation.objects.with_id(pk) if conversation is None: raise ConversationNotFoundException messages = M
def check_and_update_new_messages_flag(self, pk, user):
conversation = Conversation.objects.with_id(pk)
if conversation is None:
raise ConversationNotFoundException
messages = Message.objects(conversation=pk).count()
messages_viewed_by_user = Message.objects(conversation=pk, viewed_by=user).count()
if messages == messages_viewed_by_user:
for index, member in enumerate(conversation.members):
if member.user == user:
member = Members()
member.user = user
conversation.members[index] = member
conversation.save()
conversation.update()
我正在创建一个Members对象,并在匹配发生的索引处替换Members对象,只是将new_messages标志更新为false(在模型中设置为默认值)。是否有更好的查询来执行此任务。我不想要额外的循环和if语句,以便使这个函数更有效
编辑:
模型:
class Members(EmbeddedDocument):
user = ReferenceField(User)
new_messages = BooleanField(default=False)
class Conversation(Document, MboBaseDocument):
opportunity = ReferenceField(Opportunity)
members = ListField(EmbeddedDocumentField(Members))
counts = EmbeddedDocumentField(Counts)
status = StringField(required=True, default='active', regex='closed|active')
responded_on = IntField(required=True)
created_by = ReferenceField('User', required=True)
updated_at = IntField()
此外,样本文件:
{
"_id" : ObjectId("55c37053aee967157371372e"),
"opportunity" : ObjectId("55a3907c8c5bf672f4ad31b8"),
"members" : [
{
"user" : ObjectId("5579a6b38c5bf602374b9a0b"),
"new_messages" : true
},
{
"user" : ObjectId("abcdef12345abcdef1234503"),
"new_messages" : true
},
{
"user" : ObjectId("5581168c45910c43912e6a01"),
"new_messages" : true
}
],
"counts" : {
"members" : 3,
"messages" : 6
},
"status" : "active",
"responded_on" : NumberLong(1438871635000),
"created_by" : ObjectId("abcdef12345abcdef1234503"),
"updated_at" : NumberLong(1439194817000)
}
按照这里的逻辑走有点迷路了。你能编辑显示这里涉及的类定义吗。也不确定这里的
成员发生了什么。你说你要替换它。若然,原因为何?只是为了设置一个属性?是的。这就是问题所在。我必须将new_messages标志设置为false。我想不出mongoengine查询可以做到这一点。我已经添加了模型。在遵循这里的逻辑时有些迷失。你能编辑显示这里涉及的类定义吗。也不确定这里的成员发生了什么。你说你要替换它。若然,原因为何?只是为了设置一个属性?是的。这就是问题所在。我必须将new_messages标志设置为false。我想不出mongoengine查询可以做到这一点。我已经添加了模型。