discourse/app/assets/javascripts/discourse/controllers/invite-private.js.es6

import ModalFunctionality from 'discourse/mixins/modal-functionality';

import ObjectController from 'discourse/controllers/object';

export default ObjectController.extend(ModalFunctionality, {
  modalClass: 'invite',

  isAdmin: function(){
    return Discourse.User.currentProp("admin");
  }.property(),

  onShow: function(){
    this.set('controllers.modal.modalClass', 'invite-modal');
    this.set('emailOrUsername', '');
  },

  disabled: function() {
    if (this.get('saving')) return true;
    return this.blank('emailOrUsername');
  }.property('emailOrUsername', 'saving'),

  buttonTitle: function() {
    if (this.get('saving')) return I18n.t('topic.inviting');
    return I18n.t('topic.invite_private.action');
  }.property('saving'),

  actions: {
    invite: function() {
      if (this.get('disabled')) return;

      var self = this;
      this.setProperties({saving: true, error: false});

      // Invite the user to the private message
      this.get('model').createInvite(this.get('emailOrUsername')).then(function(result) {
        self.setProperties({saving: true, finished: true});

        if(result && result.user) {
          self.get('model.details.allowed_users').pushObject(result.user);
        }
      }).catch(function() {
        self.setProperties({error: true, saving: false});
      });
      return false;
    }
  }

});