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<?php |
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/** |
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* This file contains the skeleton for all of the database objects |
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* |
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* @package BZiON\Models |
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* @license https://github.com/allejo/bzion/blob/master/LICENSE.md GNU General Public License Version 3 |
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*/ |
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/** |
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* A database object (e.g. A player or a team) |
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* @package BZiON\Models |
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*/ |
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abstract class Model extends CachedModel |
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{ |
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/** |
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* Generates a string with the object's type and ID |
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*/ |
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public function __toString() |
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{ |
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return get_class($this) . " #" . $this->getId(); |
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} |
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/** |
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* Find if the model is in the trash can (or doesn't exist) |
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* |
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* @return bool True if the model has been deleted |
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*/ |
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public function isDeleted() |
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{ |
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if (!$this->isValid() || $this->getStatus() == 'deleted') { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Find if the model is active (i.e. visible to everyone) |
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* |
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* @return bool |
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*/ |
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public function isActive() |
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{ |
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return in_array($this->getStatus(), $this->getActiveStatuses()); |
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} |
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/** |
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* Get the models's status |
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* |
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* @return string |
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*/ |
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public function getStatus() |
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{ |
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if (!isset($this->status)) { |
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return 'active'; |
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} |
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return $this->status; |
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} |
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/** |
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* Find if two objects represent the same model |
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* |
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* @param object $model The model to compare |
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* @return bool |
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*/ |
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public function isSameAs($model) |
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{ |
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if (!$model instanceof Model) { |
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return false; |
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} |
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if (!$this->valid || !$model->valid) { |
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return false; |
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} |
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$sameType = $this instanceof $model || $model instanceof $this; |
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return $sameType && $this->id === $model->id; |
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} |
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/** |
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* Get the possible statuses representing an active model (visible to everyone) |
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* |
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* @return string[] |
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*/ |
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public static function getActiveStatuses() |
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{ |
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return array('active'); |
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} |
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/** |
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* Converts an array of IDs to an array of Models |
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* @param int[] $idArray The list of IDs |
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* @return static[] An array of models |
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*/ |
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public static function arrayIdToModel($idArray) |
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{ |
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$return = array(); |
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foreach ($idArray as $id) { |
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$return[] = static::get($id); |
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} |
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return $return; |
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} |
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/** |
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* Converts an array of Models to an array of IDs |
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* |
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* All model type information is lost |
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* |
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* @param ModelInterface[] $modelArray The list of models |
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* @return int[] An array of IDs |
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*/ |
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public static function mapToIDs($modelArray) |
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{ |
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return array_map(function (ModelInterface $model) { |
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return $model->getId(); |
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}, $modelArray); |
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} |
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/** |
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* Update a property and the corresponding database column |
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* |
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* @param mixed $property The protected class property to update |
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* @param string $dbColumn The name of the database column to update |
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* @param mixed $value The value to insert |
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* @param string $type The mysqli type of the value (s, i, d, b) |
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* @return self Returns the model itself to allow method chaining |
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*/ |
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protected function updateProperty(&$property, $dbColumn, $value, $type = 'i') |
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{ |
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// Don't waste time with mysql if there aren't any changes |
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if ($property !== $value) { |
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$property = $value; |
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if ($value instanceof TimeDate) { |
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$value = $value->toMysql(); |
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} |
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$this->update($dbColumn, $value); |
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} |
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return $this; |
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} |
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/** |
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* Gets the type of the model |
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* @return string The type of the model, e.g. "server" |
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*/ |
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public static function getType() |
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{ |
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return self::toSnakeCase(get_called_class()); |
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} |
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/** |
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* Gets a human-readable format of the model's type |
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* @return string |
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*/ |
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public static function getTypeForHumans() |
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{ |
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return self::getType(); |
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} |
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/** |
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* Change a parameter if a model is not valid |
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* |
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* Useful for form validation |
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* |
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* @param string $property The name of the property to change |
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* @param mixed $value The value of the property |
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* @return self |
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*/ |
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protected function inject($property, $value) |
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{ |
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if (!$this->isValid()) { |
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$this->{$property} = $value; |
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} |
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return $this; |
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} |
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/** |
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* Takes a CamelCase string and converts it to a snake_case one |
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* @param string $input The string to convert |
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* @return string |
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*/ |
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private static function toSnakeCase($input) |
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{ |
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preg_match_all('!([A-Z][A-Z0-9]*(?=$|[A-Z][a-z0-9])|[A-Za-z][a-z0-9]+)!', $input, $matches); |
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$ret = $matches[0]; |
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foreach ($ret as &$match) { |
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$match = ($match == strtoupper($match)) ? strtolower($match) : lcfirst($match); |
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} |
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return implode('_', $ret); |
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} |
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/** |
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* Escape special HTML characters from a string |
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* @param string $string |
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* @return string |
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*/ |
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public static function escape($string) |
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{ |
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return htmlspecialchars($string, ENT_QUOTES, 'UTF-8'); |
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} |
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/** |
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* Create model objects, given their MySQL entries |
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* |
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* @param array $results The MySQL rows of the model |
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* @return static[] |
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*/ |
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public static function createFromDatabaseResults(&$results) |
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{ |
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$models = array(); |
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foreach ($results as $result) { |
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$model = new static($result['id'], $result); |
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$model->storeInCache(); |
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$models[] = $model; |
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} |
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return $models; |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: