discourse/app/assets/javascripts/admin/models/site-text.js.es6

import RestModel from 'discourse/models/rest';

export default RestModel.extend({
  markdown: Em.computed.equal('format', 'markdown'),
  plainText: Em.computed.equal('format', 'plain'),
  html: Em.computed.equal('format', 'html'),
  css: Em.computed.equal('format', 'css'),
});