initial commit of validation classes.

system/validation/error_collector.php

@@ -0,0 +1,70 @@
+<?php namespace System\Validation;
+
+class Error_Collector {
+
+	/**
+	 * All of the error messages.
+	 *
+	 * @var array
+	 */
+	public $messages;
+
+	/**
+	 * Create a new Error Collector instance.
+	 *
+	 * @return void
+	 */
+	public function __construct($messages = array())
+	{
+		$this->messages = $messages;
+	}
+
+	/**
+	 * Add an error message to the collector.
+	 *
+	 * @param  string  $attribute
+	 * @param  string  $message
+	 * @return void
+	 */
+	public function add($attribute, $message)
+	{
+		$this->messages[$attribute][] = $message;
+	}
+
+	/**
+	 * Get the first error message for an attribute.
+	 *
+	 * @param  string  $attribute
+	 * @return string
+	 */
+	public function first($attribute)
+	{
+		return (count($messages = $this->get($attribute)) > 0) ? $messages[0] : '';
+	}
+
+	/**
+	 * Get all of the error messages for an attribute.
+	 *
+	 * If no attribute is specified, all of the error messages will be returned.
+	 *
+	 * @param  string  $attribute
+	 * @return array
+	 */
+	public function get($attribute = null)
+	{
+		if (is_null($attribute))
+		{
+			$all = array();
+
+			foreach ($this->messages as $messages)
+			{
+				$all = array_merge($all, $messages);
+			}
+
+			return $all;
+		}
+
+		return (array_key_exists($attribute, $this->messages)) ? $this->messages[$attribute] : array();
+	}
+
+}