不能创建关系时的Neo4j

Question

添加触发器我创建了apoc.trigger.add触发：

CALL apoc.trigger.add('increase_followings_and_followers', 
'UNWIND {createdRelationships} AS rel 
WITH rel, STARTNODE(rel) as follower, ENDNODE(rel) AS followed WITH rel, follower, followed 
WHERE TYPE(rel)="FOLLOW" and labels(followed)="User" and labels(follower)="User" 
SET follower.followings = follower.followings +1, followed.followers= followed.followers+1', 
{phase:'after'}) 

我建立一个socialnetwork，当用户跟随​​另一个，触发会自动增加追随者数量和以下数。但它不工作，我不能创建两个用户点之间新的关系“FOLLLOW”

Answer 1

一个节点上的标签是一个集合，因此你需要使用IN操作符：

WHERE TYPE(rel)="FOLLOW" 
AND "User" IN labels(followed) 
AND "User" IN labels(follower)