Finished help ccommand.

framework/YiiBase.php

@@ -531,11 +531,13 @@ class YiiBase
 	 */
 	public static function t($category, $message, $params = array(), $source = null, $language = null)
 	{
-		if (self::$app !== null)
+		// todo;
+		return $params !== array() ? strtr($message, $params) : $message;
+		if (self::$application !== null)
 		{
 			if ($source === null)
 				$source = $category === 'yii' ? 'coreMessages' : 'messages';
-			if (($source = self::$app->getComponent($source)) !== null)
+			if (($source = self::$application->getComponent($source)) !== null)
 				$message = $source->translate($category, $message, $language);
 		}
 		if ($params === array())
@@ -549,7 +551,7 @@ class YiiBase
 				if (strpos($message, '#') === false)
 				{
 					$chunks = explode('|', $message);
-					$expressions = self::$app->getLocale($language)->getPluralRules();
+					$expressions = self::$application->getLocale($language)->getPluralRules();
 					if ($n = min(count($chunks), count($expressions)))
 					{
 						for ($i = 0;$i < $n;$i++)

framework/console/Controller.php

@@ -29,12 +29,23 @@ use yii\base\Exception;
 class Controller extends \yii\base\Controller
 {
 	/**
+	 * This method is invoked when the request parameters do not satisfy the requirement of the specified action.
+	 * The default implementation will throw an exception.
+	 * @param Action $action the action being executed
+	 * @param Exception $exception the exception about the invalid parameters
+	 */
+	public function invalidActionParams($action, $exception)
+	{
+		echo "Error: " . $exception->getMessage() . "\n";
+		\Yii::$application->end(1);
+	}
+
+	/**
 	 * This method is invoked when extra parameters are provided to an action when it is executed.
 	 * The default implementation does nothing.
 	 * @param Action $action the action being executed
 	 * @param array $expected the expected action parameters (name => value)
 	 * @param array $actual the actual action parameters (name => value)
-	 * @throws Exception if any unrecognized parameters are provided
 	 */
 	public function extraActionParams($action, $expected, $actual)
 	{
@@ -42,9 +53,10 @@ class Controller extends \yii\base\Controller
 
 		$keys = array_diff(array_keys($actual), array_keys($expected));
 		if (!empty($keys)) {
-			throw new Exception(\Yii::t('yii', 'Unknown parameters: {params}', array(
+			echo "Error: " . \Yii::t('yii', 'Unknown parameters: {params}', array(
 				'{params}' => implode(', ', $keys),
-			)));
+			)) . "\n";
+			\Yii::$application->end(1);
 		}
 	}
 }
\ No newline at end of file

framework/util/ReflectionHelper.php

@@ -54,7 +54,7 @@ class ReflectionHelper
 			} elseif ($param->isDefaultValueAvailable()) {
 				$ps[$name] = $param->getDefaultValue();
 			} else {
-				throw new Exception(\Yii::t('yii', 'Missing required parameter "{name}".', array('{name' => $name)));
+				throw new Exception(\Yii::t('yii', 'Missing required parameter "{name}".', array('{name}' => $name)));
 			}
 		}
 		return $ps;