changes to view class to have error collector.

system/validation/error_collector.php

@@ -31,6 +31,17 @@ public function add($attribute, $message)
 		$this->messages[$attribute][] = $message;
 	}
 
+	/**
+	 * Determine if errors exist for an attribute.
+	 *
+	 * @param  string  $attribute
+	 * @return bool
+	 */
+	public function has($attribute)
+	{
+		return $this->first($attribute) !== '';
+	}
+
 	/**
 	 * Get the first error message for an attribute.
 	 *

system/view.php

@@ -34,6 +34,16 @@ public function __construct($view, $data = array())
 	{
 		$this->view = $view;
 		$this->data = $data;
+
+		// -----------------------------------------------------
+		// Every view has an error collector. This makes it
+		// convenient to check for any validation errors without
+		// worrying if the error collector is instantiated.
+		//
+		// If an error collector is in the session, it will
+		// be used as the error collector for the view.
+		// -----------------------------------------------------
+		$this->data['errors'] = (Config::get('session.driver') != '' and Session::has('errors')) ? Session::get('errors') : new Validation\Error_Collector;
 	}
 
 	/**