discourse/app/assets/javascripts/admin/controllers/admin_user_controller.js

/**
  A controller related to viewing a user in the admin section

  @class AdminUserController
  @extends Discourse.ObjectController
  @namespace Discourse
  @module Discourse
**/
Discourse.AdminUserController = Discourse.ObjectController.extend({
  editingTitle: false,

  showApproval: function() {
    return Discourse.SiteSettings.must_approve_users;
  }.property(),

  actions: {
    toggleTitleEdit: function() {
      this.toggleProperty('editingTitle');
    },

    saveTitle: function() {
      Discourse.ajax("/users/" + this.get('username').toLowerCase(), {
        data: {title: this.get('title')},
        type: 'PUT'
      }).then(null, function(e){
        bootbox.alert(I18n.t("generic_error_with_reason", {error: "http: " + e.status + " - " + e.body}));
      });

      this.send('toggleTitleEdit');
    }
  }

});