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<?php |
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/** |
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* OpauthIdentity |
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* The SS equivalent of "index.php" and "callback.php" in the Opauth package. |
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* @author Will Morgan <@willmorgan> |
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* @author Dan Hensby <@dhensby> |
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* @copyright Copyright (c) 2013, Better Brief LLP |
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*/ |
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class OpauthIdentity extends DataObject { |
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private static |
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$db = array( |
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'UID' => 'Varchar(255)', |
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'Provider' => 'Varchar(45)', |
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), |
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$has_one = array( |
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'Member' => 'Member', |
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), |
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$summary_fields = array( |
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'Member.Email' => 'MemberEmail', |
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'Provider' => 'Provider', |
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'UID' => 'UID', |
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); |
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protected |
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/** |
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* @var array source from Opauth |
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*/ |
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$authSource, |
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/** |
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* @var array The parsed member record, if any |
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*/ |
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$parsedRecord; |
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private |
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/** |
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* @var boolean shim for onBeforeCreate |
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*/ |
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$_isCreating = false; |
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/** |
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* factory |
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* Returns or creates a fresh OpauthIdentity. |
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* @param array $oaResponse The response object from Opauth. |
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* @return OpauthIdentity instance based on $oaResponse. |
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*/ |
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public static function factory(array $oaResponse) { |
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if(empty($oaResponse['auth'])) { |
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throw new InvalidArgumentException('The auth key is required to continue.'); |
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} |
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if(empty($oaResponse['auth']['provider'])) { |
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throw new InvalidArgumentException('Unable to determine provider.'); |
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} |
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$auth = $oaResponse['auth']; |
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$do = OpauthIdentity::get()->filter( |
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array( |
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'Provider' => $auth['provider'], |
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'UID' => $auth['uid'], |
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) |
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)->first(); |
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if(!$do || !$do->exists()) { |
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$do = new OpauthIdentity(); |
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$do->Provider = $auth['provider']; |
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$do->UID = $auth['uid']; |
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} |
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$do->setAuthSource($auth); |
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return $do; |
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} |
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/** |
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* Add an extension point for creation and member linking |
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*/ |
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public function onBeforeWrite() { |
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parent::onBeforeWrite(); |
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if(!$this->isInDb()) { |
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$this->_isCreating = true; |
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$this->extend('onBeforeCreate'); |
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} |
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if($this->isChanged('MemberID')) { |
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$this->extend('onMemberLinked'); |
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} |
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} |
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/** |
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* Add an extension point for afterCreate |
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*/ |
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public function onAfterWrite() { |
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parent::onAfterWrite(); |
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if($this->_isCreating === true) { |
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$this->_isCreating = false; |
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$this->extend('onAfterCreate'); |
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} |
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} |
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/** |
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* Finds a member based on this identity. Searches existing records before |
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* creating a new Member object. |
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* Note that this method does not write anything, merely sets everything up. |
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* @param array $usrSettings A map of settings because there are so many. |
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* @return Member |
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*/ |
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public function findOrCreateMember($usrSettings = array()) { |
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$defaults = array( |
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/** |
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* Link this identity to any newly discovered member. |
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*/ |
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'linkOnMatch' => true, |
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/** |
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* True, false, or an array of fields to overwrite if we merge data. |
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* Exception to this rule is overwriteEmail, which takes precedence. |
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*/ |
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'overwriteExistingFields' => false, |
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/** |
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* Overwrite the email field if it's different. Effectively changes |
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* the Member login details, so it's set to false for now. |
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*/ |
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'overwriteEmail' => false, |
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); |
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$settings = array_merge($defaults, $usrSettings); |
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if($this->isInDB()) { |
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$member = $this->Member(); |
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if($member->exists()) { |
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return $member; |
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} |
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} |
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$record = $this->getMemberRecordFromAuth(); |
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if(empty($record['Email'])) { |
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$member = new Member(); |
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} |
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else { |
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$member = Member::get()->filter('Email', $record['Email'])->first(); |
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if(!$member) { |
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$member = new Member(); |
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} |
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} |
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if($settings['linkOnMatch'] && $member->isInDB()) { |
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$this->MemberID = $member->ID; |
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} |
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// If this is a new member, give it everything we have. |
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if(!$member->isInDB()) { |
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$member->update($record); |
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} |
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// If not, we update it carefully using the settings described above. |
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else { |
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$overwrite = $settings['overwriteExistingFields']; |
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$overwriteEmail = $settings['overwriteEmail']; |
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$fieldsToWrite = array(); |
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// If overwrite is true, take everything (subtract Email later) |
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if($overwrite === true) { |
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$fieldsToWrite = $record; |
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} |
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else if(is_array($overwrite)) { |
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$fieldsToWrite = array_intersect_key($record, ArrayLib::valuekey($overwrite)); |
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} |
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// If false then fieldsToWrite remains empty, let's coast it out. |
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// Subtract email if setting is not precisely true: |
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if($overwriteEmail !== true && isset($fieldsToWrite['Email'])) { |
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unset($fieldsToWrite['Email']); |
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} |
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// Boom, we're so done. |
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$member->update($fieldsToWrite); |
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} |
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return $member; |
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} |
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/** |
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* @param array $auth |
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*/ |
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public function setAuthSource($auth) { |
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$this->authSource = $auth; |
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unset($this->parsedRecord); |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getAuthSource() { |
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return $this->authSource; |
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} |
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/** |
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* @return array The mapping arrangement from auth response to Member. |
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*/ |
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public function getMemberMapper() { |
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$mapper = Config::inst()->get(__CLASS__, 'member_mapper'); |
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if(!isset($mapper[$this->Provider])) { |
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return array(); |
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} |
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return $mapper[$this->Provider]; |
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} |
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/** |
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* Use dot notation and/or a parser to retrieve information from a provider. |
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* Examples of simple dot notation: |
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* - 'FirstName' => 'info.first_name' |
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* - 'Surname' => 'info.surname' |
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* Examples of a parser, for example when only a "name" param is present: |
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* - 'FirstName' => array('OpauthResponseHelper', 'get_first_name') |
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* - 'Surname' => array('OpauthResponseHelper', 'get_last_name') |
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* @see OpauthResponseHelper |
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* @return array The data record to add to a member |
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*/ |
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public function getMemberRecordFromAuth() { |
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if(empty($this->parsedRecord)) { |
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$record = array(); |
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foreach($this->getMemberMapper() as $memberField => $sourcePath) { |
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if(is_array($sourcePath)) { |
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$record[$memberField] = call_user_func($sourcePath, $this->authSource); |
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} |
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else if(is_string($sourcePath)) { |
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$record[$memberField] = OpauthResponseHelper::parse_source_path($sourcePath, $this->authSource); |
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} |
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} |
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$this->parsedRecord = $record; |
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} |
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return $this->parsedRecord; |
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} |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.