<?php

/*
 * This file is part of the Access to Memory (AtoM) software.
 *
 * Access to Memory (AtoM) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Access to Memory (AtoM) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Access to Memory (AtoM).  If not, see <http://www.gnu.org/licenses/>.
 */

class RepositoryStylesheetComponent extends sfComponent
{
  public function execute($request)
  {
    if (!isset($request->getAttribute('sf_route')->resource))
    {
      return sfView::NONE;
    }

    $resource = $request->getAttribute('sf_route')->resource;

    switch (true)
    {
      case $resource instanceof QubitInformationObject:
        $repository = $resource->getRepository(array('inherit' => true));

        break;

      case $resource instanceof QubitRepository:
        $repository = $resource;

        break;

      default:

        return sfView::NONE;
    }

    if (null === $repository || null === $this->backgroundColor = $repository->backgroundColor)
    {
      return sfView::NONE;
    }
  }
}

<?php

/*
 * This file is part of the Access to Memory (AtoM) software.
 *
 * Access to Memory (AtoM) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Access to Memory (AtoM) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Access to Memory (AtoM).  If not, see <http://www.gnu.org/licenses/>.
 */

class RepositoryStylesheetComponent extends sfComponent
{
  public function execute($request)
  {
    if (!isset($request->getAttribute('sf_route')->resource))
    {
      return sfView::NONE;
    }

    $resource = $request->getAttribute('sf_route')->resource;

    switch (true)
    {
      case $resource instanceof QubitInformationObject:
        $repository = $resource->getRepository(array('inherit' => true));

        break;

      case $resource instanceof QubitRepository:
        $repository = $resource;

        break;

      default:

        return sfView::NONE;
    }

    if (null === $repository || null === $repository->backgroundColor)
    {
      return sfView::NONE;
    }

    // Get value
    $this->backgroundColor = $repository->backgroundColor->__toString();

    if (0 == strlen($this->backgroundColor))
    {
      return sfView::NONE;
    }
  }
}

Add extra checks to avoid empty properties
Add extra checks to avoid empty properties
