Vulcan/packages/example-interfaces/lib/modules/categories/fragments.js

/* 

Register the GraphQL fragment used to query for data

*/

import { registerFragment } from 'meteor/vulcan:core';

registerFragment(`
  fragment CategoriesItemFragment on Category {
    _id
    createdAt
    userId
    user {
      displayName
    }
    name
    parentId,
    parent {
      ... on Category {
        _id
        name
      }
    }
  }
`);