Mastering Joomla! 1.5 Extension and Framework Development

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James Kennard

"Mastering Joomla! 1.5 Extension and Framework Development"

We can check if a browser is a robot using the isRobot() method:
$browser =& JBrowser::getInstance();
if ($browser->isRobot())
{
JError::raiseError('403', JText::_('Robots are disallowed'));
}
When we use components, we can choose to modify the MIME type of a response.
Before we do this, using JBrowser, we can check that the browser supports the
MIME type. This example checks that the browser can handle the MIME type
application/vnd.ms-excel (an MS Excel file) before displaying a certain link:
$browser =& JBrowser::getInstance();
if ($browser->isViewable('application/vnd.ms-excel'))
{
echo 'href="'.JRoute::_('index.php?option=com_myextension&format=
raw&application=xls').'">Link to an XLS document';
}
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Chapter 7
[ 189 ]
Imagine we want to display an image of a padlock if we access the site via SSL
(Secure Sockets Layer). We can use the isSSLConnection() method:
$browser =& JBrowser::getInstance();
if ($browser->isSSLConnection())
{
echo '

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James Kennard

"Mastering Joomla! 1.5 Extension and Framework Development"