Why can't I create two separate attributes to the same node?

[amaster507 (Anthony Master)]

This was brought up in Discord so resurrecting it here.

This actually was supported in a weird kind of way, but it leads to many problems.

One Way vs. Two Way @hasInverse

Hi, Your first schema is valid. You can have all type of relationships. By having Person.hasPosts <-> Post.author , we can have posts which refer to author and author which refer to post. It gives you way to add links by both directions, there may be some use case of it though there is no harm if you use only one way @hasinverse. I am not sure what you will get from friends: [Person] @hasInverse(field: friends) Because , i guess functionality will be same if we only have `friends: [Person] …

So I believe they added an error to prevent this from being valid.

The problem lies when you try to create the edges from the edge which is the common link to multiple other reverse edges. The GraphQL rewriting mechanism gets confused on which one of the reverse edges it should create for the backlink.