Merge pull request #836 from cebe/component-has-method

Added hasMethod() to Component and Object class

framework/yii/base/Component.php

@@ -199,7 +199,7 @@ class Component extends Object
 
 		$this->ensureBehaviors();
 		foreach ($this->_behaviors as $object) {
-			if (method_exists($object, $name)) {
+			if (method_exists($object, $name) || $object->hasMethod($name)) {
 				return call_user_func_array(array($object, $name), $params);
 			}
 		}
@@ -299,6 +299,32 @@ class Component extends Object
 	}
 
 	/**
+	 * Returns a value indicating whether a method is defined.
+	 * A method is defined if:
+	 *
+	 * - the class has a method with the specified name
+	 * - an attached behavior has a method with the given name (when `$checkBehaviors` is true).
+	 *
+	 * @param string $name the property name
+	 * @param boolean $checkBehaviors whether to treat behaviors' methods as methods of this component
+	 * @return boolean whether the property is defined
+	 */
+	public function hasMethod($name, $checkBehaviors = true)
+	{
+		if (method_exists($this, $name)) {
+			return true;
+		} elseif ($checkBehaviors) {
+			$this->ensureBehaviors();
+			foreach ($this->_behaviors as $behavior) {
+				if ($behavior->hasMethod($name)) {
+					return true;
+				}
+			}
+		}
+		return false;
+	}
+
+	/**
 	 * Returns a list of behaviors that this component should behave as.
 	 *
 	 * Child classes may override this method to specify the behaviors they want to behave as.

framework/yii/base/Object.php

@@ -220,6 +220,19 @@ class Object implements Arrayable
 	}
 
 	/**
+	 * Returns a value indicating whether a method is defined.
+	 *
+	 * The default implementation is a call to php function `method_exists()`.
+	 * You may override this method when you implemented the php magic method `__call()`.
+	 * @param string $name the property name
+	 * @return boolean whether the property is defined
+	 */
+	public function hasMethod($name)
+	{
+		return method_exists($this, $name);
+	}
+
+	/**
 	 * Converts the object into an array.
 	 * The default implementation will return all public property values as an array.
 	 * @return array the array representation of the object

tests/unit/framework/base/BehaviorTest.php

@@ -28,6 +28,22 @@ class BarBehavior extends Behavior
 	{
 		return 'behavior method';
 	}
+
+	public function __call($name, $params)
+	{
+		if ($name == 'magicBehaviorMethod') {
+			return 'Magic Behavior Method Result!';
+		}
+		return parent::__call($name, $params);
+	}
+
+	public function hasMethod($name)
+	{
+		if ($name == 'magicBehaviorMethod') {
+			return true;
+		}
+		return parent::hasMethod($name);
+	}
 }
 
 class BehaviorTest extends TestCase
@@ -59,4 +75,29 @@ class BehaviorTest extends TestCase
 		$this->assertEquals('behavior property', $foo->behaviorProperty);
 		$this->assertEquals('behavior method', $foo->behaviorMethod());
 	}
+
+	public function testMagicMethods()
+	{
+		$bar = new BarClass();
+		$behavior = new BarBehavior();
+
+		$this->assertFalse($bar->hasMethod('magicBehaviorMethod'));
+		$bar->attachBehavior('bar', $behavior);
+		$this->assertFalse($bar->hasMethod('magicBehaviorMethod', false));
+		$this->assertTrue($bar->hasMethod('magicBehaviorMethod'));
+
+		$this->assertEquals('Magic Behavior Method Result!', $bar->magicBehaviorMethod());
+	}
+
+	public function testCallUnknownMethod()
+	{
+		$bar = new BarClass();
+		$behavior = new BarBehavior();
+		$this->setExpectedException('yii\base\UnknownMethodException');
+
+		$this->assertFalse($bar->hasMethod('nomagicBehaviorMethod'));
+		$bar->attachBehavior('bar', $behavior);
+		$bar->nomagicBehaviorMethod();
+	}
+
 }