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<?php |
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namespace Netdudes\DataSourceryBundle\Extension; |
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use Netdudes\DataSourceryBundle\Extension\Type\TableBundleFunctionExtension; |
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use Netdudes\DataSourceryBundle\Util\CurrentDateTimeProvider; |
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use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface; |
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class BuiltInFunctionsExtension extends AbstractTableBundleExtension |
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{ |
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/** |
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* @var TokenStorageInterface |
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*/ |
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private $tokenStorage; |
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/** |
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* @var CurrentDateTimeProvider |
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*/ |
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private $dateTimeProvider; |
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/** |
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* @param TokenStorageInterface $tokenStorage |
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* @param CurrentDateTimeProvider $dateTimeProvider |
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*/ |
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public function __construct(TokenStorageInterface $tokenStorage, CurrentDateTimeProvider $dateTimeProvider) |
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{ |
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$this->tokenStorage = $tokenStorage; |
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$this->dateTimeProvider = $dateTimeProvider; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getName() |
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{ |
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return 'table_bundle_extension_built_in'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getFunctions() |
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{ |
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return [ |
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new TableBundleFunctionExtension('now', $this, 'now'), |
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new TableBundleFunctionExtension('startOfDay', $this, 'startOfDay'), |
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new TableBundleFunctionExtension('currentUser', $this, 'currentUser'), |
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new TableBundleFunctionExtension('random', $this, 'random') |
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]; |
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} |
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/** |
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* Gets the current timestamp, with an offset string |
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* |
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* @param string $offset |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function now($offset = null) |
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{ |
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$now = clone $this->dateTimeProvider->get(); |
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if ($offset) { |
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$interval = \DateInterval::createFromDateString($offset); |
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$now->add($interval); |
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if ($now == $this->dateTimeProvider->get()) { |
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// The date didn't change therefore we assume the given offset is not valid |
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throw new \Exception($offset . ' is not a valid date/time interval.'); |
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} |
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} |
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return $now->format(\DateTime::ISO8601); |
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} |
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/** |
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* Gets a date with the hour 00:00:00 |
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* |
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* @param string $date |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function startOfDay($date = null) |
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{ |
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$now = clone $this->dateTimeProvider->get(); |
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if ($date) { |
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$now = $this->modifyDate($now, $date); |
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} |
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$now->setTime(0, 0, 0); |
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return $now->format(\DateTime::ISO8601); |
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} |
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/** |
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* Gets the current users' username |
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* |
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* @return string |
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*/ |
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public function currentUser() |
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{ |
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return $this->tokenStorage->getToken()->getUsername(); |
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} |
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/** |
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* Gets a random value between $min and $max |
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* |
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* @param int $min |
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* @param int $max |
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* |
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* @return int |
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*/ |
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public function random($min = 0, $max = 10) |
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{ |
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return rand($min, $max); |
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} |
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/** |
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* @param \DateTime $date |
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* @param string $change |
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* |
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* @return \DateTime |
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* @throws \Exception |
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*/ |
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private function modifyDate(\DateTime $date, $change) |
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{ |
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try { |
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$date->modify($change); |
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} catch (\Exception $e) { |
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throw new \Exception($change . ' is not a valid date or date offset.'); |
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} |
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return ($date); |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: