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<?php |
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namespace SilverStripe\Security; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\DB; |
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use SilverStripe\ORM\ManyManyList; |
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use SilverStripe\ORM\Queries\SQLDelete; |
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use SilverStripe\ORM\Queries\SQLSelect; |
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/** |
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* Represents a set of Groups attached to a member. |
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* Handles the hierarchy logic. |
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*/ |
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class Member_GroupSet extends ManyManyList |
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{ |
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protected function linkJoinTable() |
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{ |
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// Do not join the table directly |
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if ($this->extraFields) { |
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user_error('Member_GroupSet does not support many_many_extraFields', E_USER_ERROR); |
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} |
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} |
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/** |
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* Link this group set to a specific member. |
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* |
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* Recursively selects all groups applied to this member, as well as any |
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* parent groups of any applied groups |
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* |
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* @param array|integer $id (optional) An ID or an array of IDs - if not provided, will use the current |
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* ids as per getForeignID |
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* @return array Condition In array(SQL => parameters format) |
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*/ |
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public function foreignIDFilter($id = null) |
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{ |
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if ($id === null) { |
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$id = $this->getForeignID(); |
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} |
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// Find directly applied groups |
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$manyManyFilter = parent::foreignIDFilter($id); |
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$query = new SQLSelect('"Group_Members"."GroupID"', '"Group_Members"', $manyManyFilter); |
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$groupIDs = $query->execute()->column(); |
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// Get all ancestors, iteratively merging these into the master set |
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$allGroupIDs = array(); |
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while ($groupIDs) { |
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$allGroupIDs = array_merge($allGroupIDs, $groupIDs); |
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$groupIDs = DataObject::get("SilverStripe\\Security\\Group")->byIDs($groupIDs)->column("ParentID"); |
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$groupIDs = array_filter($groupIDs); |
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} |
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// Add a filter to this DataList |
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if (!empty($allGroupIDs)) { |
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$allGroupIDsPlaceholders = DB::placeholders($allGroupIDs); |
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return array("\"Group\".\"ID\" IN ($allGroupIDsPlaceholders)" => $allGroupIDs); |
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} else { |
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return array('"Group"."ID"' => 0); |
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} |
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} |
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public function foreignIDWriteFilter($id = null) |
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{ |
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// Use the ManyManyList::foreignIDFilter rather than the one |
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// in this class, otherwise we end up selecting all inherited groups |
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return parent::foreignIDFilter($id); |
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} |
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public function add($item, $extraFields = null) |
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{ |
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// Get Group.ID |
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$itemID = null; |
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if (is_numeric($item)) { |
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$itemID = $item; |
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} else { |
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if ($item instanceof Group) { |
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$itemID = $item->ID; |
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} |
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} |
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// Check if this group is allowed to be added |
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if ($this->canAddGroups(array($itemID))) { |
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parent::add($item, $extraFields); |
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} |
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} |
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public function removeAll() |
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{ |
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// Remove the join to the join table to avoid MySQL row locking issues. |
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$query = $this->dataQuery(); |
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$foreignFilter = $query->getQueryParam('Foreign.Filter'); |
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$query->removeFilterOn($foreignFilter); |
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// Select ID column |
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$selectQuery = $query->query(); |
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$dataClassIDColumn = DataObject::getSchema()->sqlColumnForField($this->dataClass(), 'ID'); |
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$selectQuery->setSelect($dataClassIDColumn); |
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$from = $selectQuery->getFrom(); |
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unset($from[$this->joinTable]); |
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$selectQuery->setFrom($from); |
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$selectQuery->setOrderBy(); // ORDER BY in subselects breaks MS SQL Server and is not necessary here |
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$selectQuery->setDistinct(false); |
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// Use a sub-query as SQLite does not support setting delete targets in |
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// joined queries. |
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$delete = new SQLDelete(); |
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$delete->setFrom("\"{$this->joinTable}\""); |
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$delete->addWhere(parent::foreignIDFilter()); |
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$subSelect = $selectQuery->sql($parameters); |
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$delete->addWhere(array( |
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"\"{$this->joinTable}\".\"{$this->localKey}\" IN ($subSelect)" => $parameters |
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)); |
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$delete->execute(); |
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} |
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/** |
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* Determine if the following groups IDs can be added |
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* |
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* @param array $itemIDs |
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* @return boolean |
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*/ |
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protected function canAddGroups($itemIDs) |
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{ |
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if (empty($itemIDs)) { |
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return true; |
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} |
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$member = $this->getMember(); |
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return empty($member) || $member->onChangeGroups($itemIDs); |
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} |
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/** |
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* Get foreign member record for this relation |
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* |
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* @return Member |
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*/ |
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protected function getMember() |
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{ |
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$id = $this->getForeignID(); |
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if ($id) { |
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return DataObject::get_by_id(Member::class, $id); |
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} |
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} |
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} |
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silverstripe /
silverstripe-framework
Loading history...
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.