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<?php |
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/** |
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* Created by Gorlum 12.06.2017 14:41 |
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*/ |
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namespace DBAL; |
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use Common\AccessLogged; |
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use Common\GlobalContainer; |
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/** |
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* Class ActiveRecord |
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* |
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* @property int|string $id - Record ID name would be normalized to 'id' |
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* |
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* @package DBAL |
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*/ |
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abstract class ActiveRecord extends AccessLogged { |
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const IGNORE_PREFIX = 'Table'; |
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const FIELDS_TO_PROPERTIES = true; |
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const PROPERTIES_TO_FIELDS = false; |
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/** |
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* Autoincrement index field name in DB |
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* Would be normalized to 'id' ($id class property) |
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* |
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* @var string $_primaryIndexField |
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*/ |
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protected static $_primaryIndexField = 'id'; |
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protected static $_tableName = ''; |
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/** |
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* Field name translations to property names |
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* |
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* @var string[] $_fieldsToProperties |
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*/ |
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protected static $_fieldsToProperties = []; |
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// AR's service fields |
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protected $_isNew = true; |
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/** |
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* ActiveRecord constructor. |
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* |
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* @param GlobalContainer|null $services |
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*/ |
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public function __construct(GlobalContainer $services = null) { |
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parent::__construct($services); |
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} |
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/** |
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* Finds records by params in DB |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value]. Pass [] to find all records in DB |
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* |
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* @return bool|\mysqli_result |
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*/ |
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public static function find($where) { |
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if (!is_array($where)) { |
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$where = [static::$_primaryIndexField => $where]; |
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} |
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$dbq = static::prepareDbQuery(); |
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if (!empty($where)) { |
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$dbq->setWhereArray($where); |
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} |
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return $dbq->doSelect(); |
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} |
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/** |
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* Gets first ActiveRecord by $where |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return static|bool |
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*/ |
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public static function findOne($where) { |
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$record = static::fromArray(static::findOneArray($where)); |
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if (!empty($record)) { |
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$record->_isNew = false; |
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} |
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return $record; |
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} |
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/** |
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* Gets all ActiveRecords by $where |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return array|static[] - [(int) => static] |
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*/ |
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public static function findAll($where) { |
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return static::fromArrayList(static::findAllArray($where)); |
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} |
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/** |
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* Gets all ActiveRecords by $where - array indexed by record IDs |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return array|static[] - [$record_db_id => static] |
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*/ |
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public static function findAllIndexedObjects($where) { |
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return static::fromArrayList(static::findAllIndexedArray($where)); |
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} |
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/** |
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* Get table name |
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* |
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* @return string |
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*/ |
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public static function tableName() { |
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if (empty(static::$_tableName)) { |
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static::fillTableName(); |
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} |
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return static::$_tableName; |
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} |
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/** |
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* Get used DB |
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* |
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* @return \db_mysql |
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*/ |
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public static function db() { |
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return \classSupernova::$db; |
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} |
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/** |
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* Gets first record by $where |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return string[] - [$field_name => $field_value] |
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*/ |
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public static function findOneArray($where) { |
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$result = empty($dbq = static::find($where)) ? [] : static::db()->db_fetch($dbq); |
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return empty($result) ? [] : $result; |
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} |
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/** |
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* Gets all records by $where |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return string[][] - [(int) => [$field_name => $field_value]] |
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*/ |
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public static function findAllArray($where) { |
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return empty($dbq = static::find($where)) ? [] : $dbq->fetch_all(MYSQL_ASSOC); |
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} |
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/** |
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* Gets all records by $where - array indexes is a record IDs |
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* |
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* @param array|mixed $where - ID of found record OR [$field_name => $field_value] |
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* |
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* @return string[][] - [$record_db_id => [$field_name => $field_value]] |
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*/ |
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public static function findAllIndexedArray($where) { |
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$result = []; |
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if (!empty($dbq = static::find($where))) { |
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while ($row = static::db()->db_fetch($dbq)) { |
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$result[$row[static::$_primaryIndexField]] = $row; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Normalize array |
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* |
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* Basically - uppercase all field names to make it use in PTL |
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* Can be override by descendants to make more convinient, clear and robust indexes |
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* |
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* @return array |
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*/ |
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public function ptlArray() { |
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$result = []; |
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foreach ($this->values as $key => $value) { |
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$result[strtoupper(\HelperString::camelToUnderscore($key))] = $value; |
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} |
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return $result; |
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} |
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/** |
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* Converts property-indexed value array to field-indexed via translation table |
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* |
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* @param array $propertyNamed |
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* @param bool $fieldToProperties - translation direction: true - field to props. false - prop to fields |
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* |
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* @return array |
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*/ |
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protected static function translateNames(array $propertyNamed, $fieldToProperties = self::FIELDS_TO_PROPERTIES) { |
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$translations = $fieldToProperties == self::FIELDS_TO_PROPERTIES ? static::$_fieldsToProperties : array_flip(static::$_fieldsToProperties); |
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$result = []; |
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foreach ($propertyNamed as $name => $value) { |
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if (!empty($translations[$name])) { |
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$name = $translations[$name]; |
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} |
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$result[$name] = $value; |
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} |
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return $result; |
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} |
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/** |
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* @return array|bool|\mysqli_result|null |
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*/ |
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public function update() { |
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if (empty($this->_changes) && empty($this->_deltas)) { |
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return true; |
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} |
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if ($result = static::prepareDbQuery() |
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->setValues(empty($this->_changes) ? [] : static::translateNames($this->_changes, self::PROPERTIES_TO_FIELDS)) |
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->setAdjust(empty($this->_deltas) ? [] : static::translateNames($this->_deltas, self::PROPERTIES_TO_FIELDS)) |
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->setWhereArray([static::$_primaryIndexField => $this->id]) |
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->doUpdate() |
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) { |
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$this->flush(); |
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}; |
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return $result; |
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} |
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/** |
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* @return array|bool|\mysqli_result|null |
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*/ |
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public function insert() { |
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die('not implemented'); |
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} |
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public function save() { |
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die('not implemented'); |
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} |
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/** |
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* Calculate table name by class name and fills internal property |
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* |
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* Namespaces does not count - only class name taken into account |
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* Class name converted from CamelCase to underscore_name |
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* Prefix "Table" is ignored - can be override |
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* |
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* Examples: |
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* Class \Namespace\ClassName will map to table `class_name` |
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* Class \NameSpace\TableLongName will map to table `long_name` |
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* |
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* Can be override to provide different name |
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* |
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*/ |
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protected static function fillTableName() { |
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$temp = explode('\\', get_called_class()); |
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$className = end($temp); |
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if (strpos($className, static::IGNORE_PREFIX) === 0) { |
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$className = substr($className, strlen(static::IGNORE_PREFIX)); |
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} |
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static::$_tableName = \HelperString::camelToUnderscore($className); |
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} |
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/** |
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* @return DbQuery |
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*/ |
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protected static function prepareDbQuery() { |
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return DbQuery::build(static::db())->setTable(static::tableName()); |
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} |
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protected function fillProperties($array) { |
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$array = static::translateNames($array, self::FIELDS_TO_PROPERTIES); |
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foreach ($array as $name => $value) { |
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if ($name == static::$_primaryIndexField) { |
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$name = 'id'; |
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} |
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$this->__set($name, $value); |
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} |
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} |
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/** |
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* Instate ActiveRecord from array |
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* |
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* @param $array |
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* |
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* @return static|bool |
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*/ |
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public static function fromArray($array) { |
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if (!is_array($array) || empty($array)) { |
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return false; |
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} |
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$record = new static(); |
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$record->fillProperties($array); |
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return $record; |
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} |
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/** |
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* @param array $records |
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* |
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* @return array|static[] |
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*/ |
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protected static function fromArrayList($records) { |
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if (is_array($records) && !empty($records)) { |
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foreach ($records as &$record) { |
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$record = static::fromArray($record); |
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$record->_isNew = false; |
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} |
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} else { |
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$records = []; |
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} |
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return $records; |
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} |
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} |
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