Type CartesianPoint : [GraphQL error]: Message: Cannot read property 'x' of undefined

[jonasdumas]

Hello,
We would like to migrate from neo4j-graphql-js to Neo4j GraphQL Library.
We got an issue with CartesianPoint and can't find the solution.

Here's the problem. We've a custom resolver that return a Post object (which match our schema). Everything works except the field with CartesianPoint (from a nested object) who return this error:
[GraphQL error]: Message: Cannot read property 'x' of undefined,

In front it's fetched via GraphQL like this:

Post {
  CustomFieldContent {
   [...]
    value_spatial {
      x
      y
    }
  }
}

On backend, when we log our Post object we've a correct object for value_spatial. If no value, it's null. Else, when we got a value, we've tested 2 differents approach to define the object (both return the previous error) :

1. Cusom => value_spatial: { x: 46.19863361913244, y: 6.140601539612646 }
2. Cypher Point object => value_spatial: Point {
   srid: [Integer],
   x: 46.19863361913244,
   y: 6.140601539612646,
   z: undefined
   }

Here's our types:

  type  CustomFieldContent {
         [...]
        post: Post @cypher(statement: "MATCH (this)<-[:DEFINED_WITH]-(post) RETURN post"),
       value_spatial: CartesianPoint,
    }
  type Post {
         [...]
          customFieldContents: [CustomFieldContent] @cypher(statement: "MATCH (this)-[:DEFINED_WITH]->(cfc) RETURN cfc ORDER BY cfc.field_order")
 }

It seems the issue comes from the Neo4j GraphQL Library as the object we retrun thru the resolver is correct (and was working with neo4j-graphql-js).

FYI, we've also tested to replace custom @cypher statement with traditional @relationhship approach but it doesn't change the behaviour.

Any idea where is the problem?

Thank you

Jonas

[jonasdumas · Accepted solution]

Ok, we've found the solution by exploring Neo4j Graphql Library source code.
For anybody who got same problem, in order to make it work it's needed to include CartesianPoint value into a point object to be handled correctly by the library:

value_spatial: { 
    point {
       x: 46.19863361913244,
      y: 6.140601539612646,
     }
}