关联的节点到现有节点py2neo OGM

Question

我用py2neo V3连接的Neo4j数据库

我OGM模式：

class User(GraphObject): 
    __primarykey__ = "username" 

    username = Property() 
    password = Property() 

    ppi_graph = RelatedTo(Graph, "PPI_Graph") 

class Graph(GraphObject): 
    __primarykey__ = "name" 

    name = Property() 
    date = Property() 

    node = RelatedTo(Node) 
    user = RelatedFrom(User,"PPI_Graph") 

class Node(GraphObject): 
    __primarykey__ = "name" 

    name = Property() 

    ppigraph = RelatedFrom(Graph, "HAVE_NODE") 
    related = Related(Node, "Related") 

第一种方法：

查找用户，创建新图，加用户对图graph.user.add()

graph #connection to neo4j db 
user = User.select(graph, username).first() 
gr = Graph() 
gr.name = "graph" 
gr.date = "today" 
gr.user.add(user) 
graph.push(gr) 

t他的方法将数据推送到数据库

第二种方法：

查找用户，创建新的图形，当用户添加ppi_graph添加图形用户user.graph.add()

graph #connection to neo4j db 
user = User.select(graph, username).first() 
gr = Graph() 
gr.name = "graph" 
gr.date = "today" 
user.ppi_graph.add(us) 
graph.push(us) 

此方法引发错误：

related_object = self.related_class.wrap(node) 
AttributeError: type object 'Graph' has no attribute 'wrap' 

为什么我不能为finder用户添加新图？

Answer 1

Graph和Node是核心py2neo类，你可能不应该使用这些名称来定义你自己的类，以免出现这种混淆。