Query returning incorrect data

I’ve got a query that looks like this:

query IssueQuery($project: ID!) {
  issues(project: $project) {
    id
    custom {
      name
      value
    }
  }
}

When I execute this query in GraphiQL, I get results that look like this:

{
  "data": {
    "issues": [
      {
        "id": "6",
        "custom": [
          {
            "name": "priority",
            "value": "P2"
          },
          {
            "name": "severity",
            "value": "S2"
          }
        ]
      },
// etc...

However, when I execute the same query in Apollo, the props.data looks like this instead:

[
  {
    "id": "6",
    "custom": [
      {
        "name": "severity",
        "value": "S2"
      },
      {
        "name": "severity",
        "value": "S2"
      }
    ]
  },

Notice how the contents of the ‘custom’ field aren’t the same - instead of seeing two separate objects I’m seeing the same object twice.

[stubailo]

Good call, just updated the documentation.

[stubailo]

ohhhhhh - that explains why we have been seeing a lot of these types of bugs. Here’s what we have in the example app: https://github.com/apollostack/GitHunt-React/blob/380bedaef97f2a0932c1ab33bd964812d4a8a65e/ui/client.js#L43-L48

  dataIdFromObject: (result) => {
    if (result.id && result.__typename) {
      return result.__typename + result.id;
    }
    return null;
  },