mirror of
https://github.com/silverstripe/silverstripe-cms
synced 2024-06-29 07:59:37 +02:00
125 lines
3.5 KiB
PHP
125 lines
3.5 KiB
PHP
<?php
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/**
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* Adds tracking of links in any HTMLText fields which reference SiteTree or File items
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*
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* Attaching this to any DataObject will add four fields which contain all links to SiteTree and File items
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* referenced in any HTMLText fields, and two booleans to indicate if there are any broken links
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*
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* Call augmentSyncLinkTracking to update those fields with any changes to those fields
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*/
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class SiteTreeLinkTracking extends DataExtension {
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private static $db = array(
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"HasBrokenFile" => "Boolean",
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"HasBrokenLink" => "Boolean"
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);
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private static $many_many = array(
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"LinkTracking" => "SiteTree",
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"ImageTracking" => "File"
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);
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private static $many_many_extraFields = array(
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"LinkTracking" => array("FieldName" => "Varchar"),
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"ImageTracking" => array("FieldName" => "Varchar")
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);
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function trackLinksInField($field) {
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$record = $this->owner;
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$linkedPages = array();
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$linkedFiles = array();
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$htmlValue = Injector::inst()->create('HTMLValue', $record->$field);
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// Populate link tracking for internal links & links to asset files.
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if($links = $htmlValue->getElementsByTagName('a')) foreach($links as $link) {
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$href = Director::makeRelative($link->getAttribute('href'));
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if($href) {
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if(preg_match('/\[(sitetree|file)_link[,\s]id=([0-9]+)\]/i', $href, $matches)) {
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$type = $matches[1];
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$id = $matches[2];
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if($type === 'sitetree') {
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if(SiteTree::get()->byID($id)) {
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$linkedPages[] = $id;
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} else {
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$record->HasBrokenLink = true;
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}
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} else if($type === 'file') {
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if(File::get()->byID($id)) {
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$linkedFiles[] = $id;
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} else {
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$record->HasBrokenFile = true;
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}
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}
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} else if($href == '' || $href[0] == '/') {
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$record->HasBrokenLink = true;
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}
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}
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}
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// Add file tracking for image references
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if($images = $htmlValue->getElementsByTagName('img')) foreach($images as $img) {
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if($image = File::find($path = urldecode(Director::makeRelative($img->getAttribute('src'))))) {
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$linkedFiles[] = $image->ID;
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}
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else {
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if(substr($path, 0, strlen(ASSETS_DIR) + 1) == ASSETS_DIR . '/') {
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$record->HasBrokenFile = true;
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}
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}
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}
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// Update the "LinkTracking" many_many
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if($record->ID && $record->many_many('LinkTracking') && $tracker = $record->LinkTracking()) {
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$tracker->removeByFilter(sprintf(
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'"FieldName" = \'%s\' AND "%s" = %d',
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$field,
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$tracker->getForeignKey(),
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$record->ID
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));
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if($linkedPages) foreach($linkedPages as $item) {
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$tracker->add($item, array('FieldName' => $field));
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}
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}
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// Update the "ImageTracking" many_many
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if($record->ID && $record->many_many('ImageTracking') && $tracker = $record->ImageTracking()) {
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$tracker->removeByFilter(sprintf(
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'"FieldName" = \'%s\' AND "%s" = %d',
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$field,
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$tracker->getForeignKey(),
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$record->ID
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));
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if($linkedFiles) foreach($linkedFiles as $item) {
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$tracker->add($item, array('FieldName' => $field));
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}
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}
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}
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function augmentSyncLinkTracking() {
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// Reset boolean broken flags
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$this->owner->HasBrokenLink = false;
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$this->owner->HasBrokenFile = false;
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// Build a list of HTMLText fields
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$allFields = $this->owner->db();
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$htmlFields = array();
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foreach($allFields as $field => $fieldSpec) {
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if(preg_match('/([^(]+)/', $fieldSpec, $matches)) {
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$class = $matches[0];
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if(class_exists($class)){
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if($class == 'HTMLText' || is_subclass_of($class, 'HTMLText')) $htmlFields[] = $field;
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}
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}
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}
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foreach($htmlFields as $field) $this->trackLinksInField($field);
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}
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} |