/**
* Check to see if a value exists in the POST/GET data, if so escape and return.
*
* @access public
* @param string $model
* @param string $field
* @return string
*/
public function value($model, $field)
{
$data =& App::$data;
$value = Set::extract($data, $model . '.' . $field);
if (!empty($value)) {
return is_array($value) ? $value : htmlentities($value, ENT_COMPAT, App::charset());
} else {
$data = Set::insert($data, $model . '.' . $field, null);
return null;
}
}
/**
* Create a meta element. Has predefined values for common meta tags.
*
* @access public
* @param string $type
* @param string $content
* @param array $attributes
* @return string
*/
public function meta($type, $content = null, array $attributes = array())
{
if (empty($content)) {
switch (strtolower($type)) {
case 'content-script-type':
$content = 'text/javascript';
break;
case 'content-style-type':
$content = 'text/css';
break;
case 'content-type':
$content = $this->isDoctype('xhtml') ? 'application/xhtml\\+xml' : 'text/html';
$content .= '; charset=' . App::charset();
break;
}
}
$metaTypes = array('content-type' => array('http-equiv' => 'Content-Type', 'content' => $content), 'content-script-type' => array('http-equiv' => 'Content-Script-Type', 'content' => $content), 'content-style-type' => array('http-equiv' => 'Content-Style-Type', 'content' => $content), 'content-language' => array('http-equiv' => 'Content-Language', 'content' => $content), 'keywords' => array('name' => 'keywords', 'content' => $content), 'description' => array('name' => 'description', 'content' => $content), 'author' => array('name' => 'author', 'content' => $content), 'robots' => array('name' => 'robots', 'content' => $content), 'rss' => array('type' => 'application/rss+xml', 'rel' => 'alternate', 'title' => $type, 'link' => $content), 'atom' => array('type' => 'application/atom+xml', 'title' => $type, 'link' => $content), 'icon' => array('type' => 'image/x-icon', 'rel' => 'icon', 'link' => $content));
if (isset($metaTypes[strtolower($type)])) {
$attributes = $attributes + $metaTypes[strtolower($type)];
} else {
$attributes['name'] = $type;
$attributes['content'] = $content;
}
return $this->tag('meta', $this->attributes($attributes));
}
/**
* Parses an array of attributes to the HTML equivalent.
*
* @access public
* @param array $attributes
* @param array $remove
* @return string
*/
public function attributes(array $attributes, array $remove = array())
{
$parsed = null;
$escape = true;
if (isset($attributes['escape']) && is_bool($attributes['escape'])) {
$escape = $attributes['escape'];
}
unset($attributes['escape']);
if (!empty($attributes)) {
foreach ($attributes as $key => $value) {
if (in_array($key, $remove)) {
unset($attributes[$key]);
continue;
}
if ($escape === true) {
$value = htmlentities($value, ENT_COMPAT, App::charset());
}
$parsed .= ' ' . strtolower($key) . '="' . $value . '"';
}
}
return $parsed;
}
