在石墨烯(Graphene)中使用MongoDB和Python更新EmbeddedDocument字段的方法如下:
from graphene import ObjectType, String, Schema
from graphene_mongo import MongoengineObjectType
from mongoengine import Document, EmbeddedDocument, fields
from pymongo import MongoClient
class Address(EmbeddedDocument):
street = fields.StringField()
city = fields.StringField()
state = fields.StringField()
class User(Document):
name = fields.StringField()
address = fields.EmbeddedDocumentField(Address)
class AddressType(ObjectType):
street = String()
city = String()
state = String()
class UserType(MongoengineObjectType):
class Meta:
model = User
class Query(ObjectType):
user = String(name=String())
def resolve_user(self, info, name):
user = User.objects(name=name).first()
return user
class UpdateUser(ObjectType):
update_user = String(name=String(), street=String(), city=String(), state=String())
def resolve_update_user(self, info, name, street, city, state):
user = User.objects(name=name).first()
user.address.street = street
user.address.city = city
user.address.state = state
user.save()
return "User updated successfully"
class Mutation(ObjectType):
update_user = UpdateUser.Field()
schema = Schema(query=Query, mutation=Mutation)
client = MongoClient('mongodb://localhost:27017/')
db = client['your_database_name']
result = schema.execute('''
mutation {
update_user(name: "John", street: "123 Main St", city: "New York", state: "NY")
}
''', context_value={'db': db})
print(result.data['update_user'])
这样,你就可以在石墨烯中使用MongoDB和Python更新EmbeddedDocument字段了。请注意,这只是一个简单的示例,实际应用中可能需要更复杂的逻辑和错误处理。另外,腾讯云提供了云数据库MongoDB服务,可以用于存储和管理MongoDB数据库,具体详情请参考腾讯云云数据库MongoDB产品介绍:https://cloud.tencent.com/product/cmongodb。
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