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

module.exports = function (api) {
  /**
   * Manipulates the given excerpt
   */
  api.loadSource(({
    addSchemaResolvers
  }) => {
    addSchemaResolvers({
      Article: {
        excerpt (obj) {
          var longText = (obj.excerpt.length > 200) ? '...' : '';
          return obj.excerpt.replace(/^(.{200}[^\s]*).*/, '$1' + longText);
        }
      },
      News: {
        excerpt (obj) {
          var longText = (obj.excerpt.length > 200) ? '...' : '';
          return obj.excerpt.replace(/^(.{200}[^\s]*).*/, '$1' + longText);
        }
      }
    });
  });

  api.onCreateNode(options => {
    if (options.internal.typeName === 'Article') {
      options.recordType = options.internal.typeName;
      options.tags = (typeof options.tags === 'string') ? options.tags.split(',').map(string => string.trim()) : options.tags;
      return {
        ...options
      };
    }

    if (options.internal.typeName === 'News') {
      options.recordType = options.internal.typeName;
      options.tags = (typeof options.tags === 'string') ? options.tags.split(',').map(string => string.trim()) : options.tags;
      return {
        ...options
      };
    }

    if (options.internal.typeName === 'Tag') {
      options.recordType = options.internal.typeName;
      return {
        ...options
      };
    }

    if (options.internal.typeName === 'Resource') {
      options.recordType = options.internal.typeName;
      options.type = (typeof options.type === 'string') ? options.type.split(',').map(string => string.trim()) : options.type;
      options.tags = (typeof options.tags === 'string') ? options.tags.split(',').map(string => string.trim()) : options.tags;
      return {
        ...options
      };
    }

    if (options.internal.typeName === 'CustomPage') {
      options.recordType = options.internal.typeName;
      options.sidebar = !!(options.sidebar);
      return {
        ...options
      };
    }
  });
}