不能創建關係時的Neo4j

Question

添加觸發器我創建了apoc.trigger.add觸發：

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'}) 

我建立一個socialnetwork，當用戶跟隨​​另一個，觸發會自動增加追隨者數量和以下數。但它不工作，我不能創建兩個用戶點之間新的關係「FOLLLOW」

Answer 1

一個節點上的標籤是一個集合，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)