gridsome.server.js

// Server API makes it possible to hook into various parts of Gridsome
// on server-side and add custom data to the GraphQL data layer.
// Learn more: https://gridsome.org/docs/server-api/

// Changes here requires a server restart.
// To restart press CTRL + C in terminal and run `gridsome develop`

module.exports = function (api) {
  api.loadSource(({ addSchemaResolvers }) => {
    // Use the Data store API here: https://gridsome.org/docs/data-store-api/
    addSchemaResolvers({
      TravelPost: {
        photographer: {
          type: 'String',
          resolve(obj) {
            return `${obj.photographer}`;
          },
        },
        image_link: {
          type: 'String',
          resolve(obj) {
            return `${obj.image_link}`;
          },
        },
      },
      Post: {
        photographer: {
          type: 'String',
          resolve(obj) {
            return `${obj.photographer}`;
          },
        },
        image_link: {
          type: 'String',
          resolve(obj) {
            return `${obj.image_link}`;
          },
        },
      },
    });
  });
};