datahub/wherehows-web/app/services/search.js

import Service from '@ember/service';
import { getOwner } from '@ember/application';
import { isBlank } from '@ember/utils';
import { encode } from 'wherehows-web/utils/encode-decode-uri-component-with-space';

export default Service.extend({
  /**
   * Transition to the search route including search keyword as query parameter
   * @param {Object} args = {} a map of query parameters to values, including keyword
   * @prop {String|*} args.keyword the string to search for
   * @returns {void|Transition}
   */
  showSearchResults(args = {}) {
    let { keyword, category } = args;

    // Transition to search route only if value is not null or void
    if (!isBlank(keyword)) {
      // Lookup application Route on ApplicationInstance
      const applicationRoute = getOwner(this).lookup('route:application');
      keyword = encode(keyword);

      return applicationRoute.transitionTo('search', {
        queryParams: { keyword, category }
      });
    }
  }
});