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<?php |
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/** |
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* Finds {@link DataObject} instances using certain shortcodes |
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* by fulltext-querying only fields which are capable of parsing shortcodes. |
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* Effectively the reverse of "link tracking", |
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* which updates this relation on write rather than fetching it on demand. |
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* |
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* Doesn't scale to millions of pages due to triggering a potentially unindexed LIKE |
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* search across dozens of columns and tables - but for a couple of hundred pages |
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* and occasionally use its a feasible solution. |
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*/ |
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class ShortCodeRelationFinder |
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{ |
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/** |
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* @var String Regex matching a {@link DBField} class name which is shortcode capable. |
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* |
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* This should really look for implementors of a ShortCodeParseable interface, |
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* but we can't extend the core Text and HTMLText class |
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* on existing like SiteTree.Content for this. |
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*/ |
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protected $fieldSpecRegex = '/^(HTMLText)/'; |
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/** |
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* @param String Shortcode index number to find |
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* @return array IDs |
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*/ |
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public function findPageIDs($number) |
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{ |
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$list = $this->getList($number); |
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$found = $list->column(); |
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return $found; |
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} |
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public function findPageCount($number) |
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{ |
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$list = $this->getList($number); |
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return $list->count(); |
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} |
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/** |
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* @param int $number |
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* @return DataList |
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*/ |
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public function getList($number) |
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{ |
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$number = (int) $number; |
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$list = DataList::create('SiteTree'); |
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$where = array(); |
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$fields = $this->getShortCodeFields('SiteTree'); |
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$shortcode = DMS::inst()->getShortcodeHandlerKey(); |
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foreach ($fields as $ancClass => $ancFields) { |
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foreach ($ancFields as $ancFieldName => $ancFieldSpec) { |
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if ($ancClass != "SiteTree") { |
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$list = $list->leftJoin($ancClass, '"'.$ancClass.'"."ID" = "SiteTree"."ID"'); |
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} |
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$where[] = "\"$ancClass\".\"$ancFieldName\" LIKE '%[{$shortcode},id=$number]%'"; //."%s" LIKE ""', |
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} |
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} |
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$list = $list->where(implode(' OR ', $where)); |
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return $list; |
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} |
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/** |
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* Returns a filtered list of fields which could contain shortcodes. |
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* |
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* @param String |
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* @return Array Map of class names to an array of field names on these classes. |
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*/ |
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public function getShortcodeFields($class) |
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{ |
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$fields = array(); |
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$ancestry = array_values(ClassInfo::dataClassesFor($class)); |
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foreach ($ancestry as $ancestor) { |
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if (ClassInfo::classImplements($ancestor, 'TestOnly')) { |
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continue; |
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} |
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$ancFields = DataObject::custom_database_fields($ancestor); |
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if ($ancFields) { |
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foreach ($ancFields as $ancFieldName => $ancFieldSpec) { |
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if (preg_match($this->fieldSpecRegex, $ancFieldSpec)) { |
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if (!@$fields[$ancestor]) { |
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$fields[$ancestor] = array(); |
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} |
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$fields[$ancestor][$ancFieldName] = $ancFieldSpec; |
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} |
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} |
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} |
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} |
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return $fields; |
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} |
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} |
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silverstripe /
silverstripe-dms
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.