GraphQl Schema generates wrong Type for Relations

[athopen]

Hello,

i have got a customer entity with a one-to-many-relation to an email-entity. Through the rest-api i am able to create the a new customer and the emails with a single request. Swagger already displays the correct arguments:

But when i go to Graphiql it tells me that it expects an array of strings as an argument for the emails:

The source of the problem is in the SchemaBuilder when the types are converted (https://github.com/api-platform/core/blob/master/src/GraphQl/Type/SchemaBuilder.php#L354). Because the input is true (createCustomerInput mutation) and the depth is 7 it always returns a GraphQl-StringType. I dont think that this is the right behaviour because the 7 isn´t the depth, its just the 7nth field.

When i do not increse the depth (https://github.com/api-platform/core/blob/master/src/GraphQl/Type/SchemaBuilder.php#L377) and just pass it to the function as it is the following mutation works and saves the customer including the emails.

Request:

mutation {
  createCustomer(
    input: {
      clientMutationId: "12", 
      firstName: "asdf", 
      lastName: "asdf", 
      emails: [
        {
          clientMutationId:"1", 
          email: "[email protected]", 
          primary: false
        }
      ]
    }
  ) {
    id
    emails {
      edges {
        node {
          id
          email
        }
      }
    }
  }
}

Result:

{
  "data": {
    "createCustomer": {
      "id": "/customers/5fe8afae-bc4a-4ba7-8418-01c4d1a00c78",
      "emails": {
        "edges": null
      }
    }
  }
}

But as you can see the Result does not contain the emails. If i send another request and try to get the customer directly the emails are present again.

Request:

{
  customer(id: "/customers/dcbfc05c-a72a-47d8-9111-fc5869831650") {
    firstName
    emails {
      edges {
        node {
          email
        }
      }
    }
  }
}

Response

{
  "data": {
    "customer": {
      "firstName": "asdf",
      "emails": {
        "edges": [
          {
            "node": {
              "email": "[email protected]"
            }
          }
        ]
      }
    }
  }
}

Am i missing some config or is this a bug?

[alanpoulain]

This behavior is wanted. See #1964.
But depth should not be 7 and we should probably investigate this.

[leyriel]

Hello, do you have a news for this ? :)

[alanpoulain]

The depth issue has been fixed. See #2612 (comment).