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@ -21,8 +21,32 @@ class Object
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{ |
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/** |
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* Constructor. |
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* The default implementation does two things: |
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* |
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* - Initializes the object with the given configuration `$config`. |
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* - Call [[init()]]. |
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* |
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* If this method is overridden in a child class, it is recommended that |
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* |
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* - the last parameter of the constructor is a configuration array, like `$config` here. |
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* - call the parent implementation at the end of the constructor. |
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* |
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* @param array $config name-value pairs that will be used to initialize the object properties |
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*/ |
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public function __construct() |
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public function __construct($config = array()) |
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{ |
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foreach ($config as $name => $value) { |
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$this->$name = $value; |
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} |
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$this->init(); |
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} |
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/** |
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* Initializes the object. |
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* This method is invoked at the end of the constructor after the object is initialized with the |
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* given configuration. |
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*/ |
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public function init() |
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{ |
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} |
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@ -34,7 +58,7 @@ class Object
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* @param string $name the property name |
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* @return mixed the property value, event handlers attached to the event, |
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* the named behavior, or the value of a behavior's property |
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* @throws Exception if the property is not defined |
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* @throws BadPropertyException if the property is not defined |
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* @see __set |
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*/ |
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public function __get($name) |
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@ -43,7 +67,7 @@ class Object
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if (method_exists($this, $getter)) { |
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return $this->$getter(); |
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} else { |
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throw new Exception('Getting unknown property: ' . get_class($this) . '.' . $name); |
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throw new BadPropertyException('Getting unknown property: ' . get_class($this) . '.' . $name); |
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} |
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} |
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@ -54,7 +78,7 @@ class Object
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* will be implicitly called when executing `$object->property = $value;`. |
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* @param string $name the property name or the event name |
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* @param mixed $value the property value |
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* @throws Exception if the property is not defined or read-only. |
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* @throws BadPropertyException if the property is not defined or read-only. |
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* @see __get |
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*/ |
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public function __set($name, $value) |
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@ -63,9 +87,9 @@ class Object
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if (method_exists($this, $setter)) { |
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$this->$setter($value); |
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} elseif (method_exists($this, 'get' . $name)) { |
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throw new Exception('Setting read-only property: ' . get_class($this) . '.' . $name); |
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throw new BadPropertyException('Setting read-only property: ' . get_class($this) . '.' . $name); |
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} else { |
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throw new Exception('Setting unknown property: ' . get_class($this) . '.' . $name); |
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throw new BadPropertyException('Setting unknown property: ' . get_class($this) . '.' . $name); |
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} |
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} |
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@ -99,7 +123,7 @@ class Object
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* Note that if the property is not defined, this method will do nothing. |
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* If the property is read-only, it will throw an exception. |
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* @param string $name the property name |
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* @throws Exception if the property is read only. |
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* @throws BadPropertyException if the property is read only. |
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*/ |
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public function __unset($name) |
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{ |
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@ -108,7 +132,7 @@ class Object
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// write property |
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$this->$setter(null); |
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} elseif (method_exists($this, 'get' . $name)) { |
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throw new Exception('Unsetting read-only property: ' . get_class($this) . '.' . $name); |
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throw new BadPropertyException('Unsetting read-only property: ' . get_class($this) . '.' . $name); |
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} |
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} |
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@ -121,7 +145,7 @@ class Object
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* will be implicitly called when an unknown method is being invoked. |
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* @param string $name the method name |
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* @param array $params method parameters |
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* @throws Exception when calling unknown method |
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* @throws BadMethodException when calling unknown method |
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* @return mixed the method return value |
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*/ |
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public function __call($name, $params) |
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@ -133,7 +157,7 @@ class Object
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return call_user_func_array($func, $params); |
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} |
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} |
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throw new Exception('Unknown method: ' . get_class($this) . "::$name()"); |
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throw new BadMethodException('Unknown method: ' . get_class($this) . "::$name()"); |
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} |
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/** |
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@ -148,7 +172,7 @@ class Object
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*/ |
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public function hasProperty($name, $checkVar = true) |
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{ |
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return $this->canGetProperty($name, false) || $this->canSetProperty($name, false) || $checkVar && property_exists($this, $name); |
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return $this->canGetProperty($name, $checkVar) || $this->canSetProperty($name, false); |
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} |
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/** |
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@ -176,86 +200,6 @@ class Object
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*/ |
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public function canSetProperty($name, $checkVar = true) |
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{ |
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return $checkVar && property_exists($this, $name) || method_exists($this, 'set' . $name); |
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} |
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/** |
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* Creates a new instance of the calling class. |
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* |
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* The newly created object will be initialized with the specified configuration. |
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* |
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* Extra parameters passed to this method will be used as the parameters to the object |
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* constructor. |
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* |
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* This method does the following steps to create a object: |
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* |
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* - create the object using the PHP `new` operator; |
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* - if [[Yii::objectConfig]] contains the configuration for the object class, |
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* it will be merged with the $config parameter; |
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* - initialize the object properties using the configuration passed to this method; |
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* - call the `init` method of the object if it implements the [[yii\base\Initable]] interface. |
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* |
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* For example, |
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* |
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* ~~~ |
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* class Foo extends \yii\base\Object implements \yii\base\Initable |
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* { |
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* public $c; |
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* public function __construct($a, $b) |
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* { |
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* ... |
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* } |
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* public function init() |
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* { |
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* ... |
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* } |
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* } |
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* |
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* $model = Foo::newInstance(array('c' => 3), 1, 2); |
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* // which is equivalent to the following lines: |
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* $model = new Foo(1, 2); |
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* $model->c = 3; |
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* $model->init(); |
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* ~~~ |
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* |
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* @param array $config the object configuration (name-value pairs that will be used to initialize the object) |
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* @return \yii\base\Object the created object |
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* @throws Exception if the configuration is invalid. |
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*/ |
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public static function newInstance($config = array()) |
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{ |
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$class = get_called_class(); |
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if (($n = func_num_args()) > 1) { |
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$args = func_get_args(); |
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if ($n === 2) { |
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$object = new $class($args[1]); |
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} elseif ($n === 3) { |
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$object = new $class($args[1], $args[2]); |
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} elseif ($n === 4) { |
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$object = new $class($args[1], $args[2], $args[3]); |
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} else { |
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// remove $config |
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array_shift($args); |
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$r = new \ReflectionClass($class); |
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$object = $r->newInstanceArgs($args); |
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} |
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} else { |
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$object = new $class; |
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} |
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if (isset(\Yii::$objectConfig[$class])) { |
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$config = array_merge(\Yii::$objectConfig[$class], $config); |
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} |
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foreach ($config as $name => $value) { |
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$object->$name = $value; |
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} |
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if ($object instanceof Initable) { |
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$object->init(); |
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} |
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return $object; |
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return method_exists($this, 'set' . $name) || $checkVar && property_exists($this, $name); |
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} |
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} |
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Qiang Xue
13 years ago