silverstripe-blog/code/extensions/BlogMemberExtension.php

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2015-03-22 23:18:02 +01:00
<?php
/**
* This class is responsible for add Blog specific behaviour to Members.
*
* @package silverstripe
* @subpackage blog
*
**/
class BlogMemberExtension extends DataExtension {
private static $db = array(
'URLSegment' => 'Varchar',
'BlogProfileSummary' => 'Text'
);
private static $has_one = array(
'BlogProfileImage' => 'Image'
);
private static $belongs_many_many = array(
'AuthoredPosts' => 'BlogPost'
);
public function onBeforeWrite() {
// Generate a unique URL segment for the Member.
$count = 1;
$this->owner->URLSegment = $this->generateURLSegment();
while(!$this->validURLSegment()) {
$this->owner->URLSegment = preg_replace('/-[0-9]+$/', null, $this->owner->URLSegment) . '-' . $count;
$count++;
}
}
public function updateCMSFields(FieldList $fields) {
$fields->removeByName('URLSegment');
return $fields;
}
/**
* Generate a unique URL segment based on the Member's name.
*
* @return string Generated URL segment.
*/
public function generateURLSegment() {
$filter = URLSegmentFilter::create();
$name = $this->owner->FirstName . ' ' . $this->owner->Surname;
$urlSegment = $filter->filter($name);
// Fallback to generic profile name if path is empty (= no valid, convertable characters)
if(!$urlSegment || $urlSegment == '-' || $urlSegment == '-1') {
$urlSegment = "profile-".$this->owner->ID;
}
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return $urlSegment;
}
/**
* Returns TRUE if this object has a URL segment value that does not conflict with any other objects.
*
* @return bool
*/
public function validURLSegment() {
$conflict = Member::get()->filter('URLSegment', $this->owner->URLSegment);
// If the Member we're checking against is saved, exclude them from the check.
// i.e. don't conflict against yourself.
if ($this->owner->ID) {
$conflict = $conflict->exclude('ID', $this->owner->ID);
}
return $conflict->count() == 0;
}
}