silverstripe-googlesitemaps/code/extensions/GoogleSitemapSiteTreeExtension.php

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<?php
/**
* @package googlesitemaps
*/
class GoogleSitemapSiteTreeExtension extends GoogleSitemapExtension {
/**
* @var array
*/
private static $db = array(
"Priority" => "Varchar(5)"
);
/**
* @param FieldList
*/
public function updateSettingsFields(&$fields) {
$prorities = array(
'-1' => _t('GoogleSitemaps.PRIORITYNOTINDEXED', "Not indexed"),
'1.0' => '1 - ' . _t('GoogleSitemaps.PRIORITYMOSTIMPORTANT', "Most important"),
'0.9' => '2',
'0.8' => '3',
'0.7' => '4',
'0.6' => '5',
'0.5' => '6',
'0.4' => '7',
'0.3' => '8',
'0.2' => '9',
'0.1' => '10 - ' . _t('GoogleSitemaps.PRIORITYLEASTIMPORTANT', "Least important")
);
$tabset = $fields->findOrMakeTab('Root.Settings');
$message = "<p>";
$message .= sprintf(_t('GoogleSitemaps.METANOTEPRIORITY', "Manually specify a Google Sitemaps priority for this page (%s)"),
'<a href="http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=71936#prioritize" target="_blank">?</a>'
);
$message .= "</p>";
$tabset->push(new Tab('GoogleSitemap', _t('GoogleSitemaps.TABGOOGLESITEMAP', 'Google Sitemap'),
new LiteralField("GoogleSitemapIntro", $message),
$priority = new DropdownField("Priority", $this->owner->fieldLabel('Priority'), $prorities, $this->owner->Priority)
));
$priority->setEmptyString(_t('GoogleSitemaps.PRIORITYAUTOSET', 'Auto-set based on page depth'));
}
/**
* @param FieldList
*
* @return void
*/
public function updateFieldLabels(&$labels) {
parent::updateFieldLabels($labels);
$labels['Priority'] = _t('GoogleSitemaps.METAPAGEPRIO', "Page Priority");
}
/**
* Ensure that all parent pages of this page (if any) are published
*
* @return boolean
*/
public function hasPublishedParent() {
// Skip root pages
if(empty($this->owner->ParentID)) return true;
// Ensure direct parent exists
$parent = $this->owner->Parent();
if(empty($parent) || !$parent->exists()) return false;
// Check ancestry
return $parent->hasPublishedParent();
}
/**
* @return boolean
*/
public function canIncludeInGoogleSitemap() {
// Check that parent page is published
if(!$this->owner->hasPublishedParent()) return false;
$result = parent::canIncludeInGoogleSitemap();
$result = ($this->owner instanceof ErrorPage) ? false : $result;
return $result;
}
/**
* @return mixed
*/
public function getGooglePriority() {
setlocale(LC_ALL, "en_US.UTF8");
$priority = $this->owner->getField('Priority');
if(!$priority) {
$parentStack = $this->owner->parentStack();
$numParents = is_array($parentStack) ? count($parentStack) - 1 : 0;
$num = max(0.1, 1.0 - ($numParents / 10));
$result = str_replace(",", ".", $num);
return $result;
} else if ($priority == -1) {
return false;
} else {
return (is_numeric($priority) && $priority <= 1.0) ? $priority : 0.5;
}
}
}