silverstripe-googlesitemaps/code/GoogleSitemapDecorator.php

86 lines
2.3 KiB
PHP

<?php
/**
* Decorate the page object to provide google sitemaps with
* additionally options and configuration.
*
* @package googlesitemaps
*/
class GoogleSitemapDecorator extends SiteTreeDecorator {
function extraStatics() {
return array(
'db' => array(
"Priority" => "Varchar(5)",
)
);
}
function updateCMSFields(&$fields) {
$pagePriorities = array(
'' => _t('SiteTree.PRIORITYAUTOSET','Auto-set based on page depth'),
'-1' => _t('SiteTree.PRIORITYNOTINDEXED', "Not indexed"), // We set this to -ve one because a blank value implies auto-generation of Priority
'1.0' => '1 - ' . _t('SiteTree.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('SiteTree.PRIORITYLEASTIMPORTANT', "Least important")
);
$tabset = $fields->findOrMakeTab('Root.Content');
$tabset->push(
$addTab = new Tab(
'GoogleSitemap',
_t('SiteTree.TABGOOGLESITEMAP', 'Google Sitemap'),
new LiteralField(
"GoogleSitemapIntro",
"<p>" .
sprintf(
_t(
'SiteTree.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>'
) .
"</p>"
),
new DropdownField("Priority", $this->owner->fieldLabel('Priority'), $pagePriorities)
)
);
}
function updateFieldLabels(&$labels) {
parent::updateFieldLabels($labels);
$labels['Priority'] = _t('SiteTree.METAPAGEPRIO', "Page Priority");
}
function onAfterPublish() {
GoogleSitemap::ping();
}
function onAfterUnpublish() {
GoogleSitemap::ping();
}
/**
* The default value of the priority field depends on the depth of the page in
* the site tree, so it must be calculated dynamically.
*/
function getPriority() {
if(!$this->owner->getField('Priority')) {
$parentStack = $this->owner->parentStack();
$numParents = is_array($parentStack) ? count($parentStack) - 1: 0;
return max(0.1, 1.0 - ($numParents / 10));
} elseif($this->owner->getField('Priority') == -1) {
return 0;
} else {
return $this->owner->getField('Priority');
}
}
}