initial commit of validation classes.

system/validation/rule.php

@@ -0,0 +1,93 @@
+<?php namespace System\Validation;
+
+abstract class Rule {
+
+	/**
+	 * The attributes being validated.
+	 *
+	 * @var array
+	 */
+	public $attributes;
+
+	/**
+	 * The validation error message.
+	 *
+	 * @var string
+	 */
+	public $message;
+
+	/**
+	 * Create a new validation Rule instance.
+	 *
+	 * @param  array      $attributes
+	 * @param  Validator  $class
+	 * @return void
+	 */
+	public function __construct($attributes)
+	{
+		$this->attributes = $attributes;
+	}
+
+	/**
+	 * Run the validation rule.
+	 *
+	 * @param  array            $attributes
+	 * @param  Error_Collector  $errors
+	 * @return void
+	 */
+	public function validate($attributes, $errors)
+	{
+		if (is_null($this->message))
+		{
+			throw new \Exception("An error message must be specified for every Eloquent validation rule.");
+		}
+
+		foreach ($this->attributes as $attribute)
+		{
+			if ( ! $this->check($attribute, $attributes))
+			{
+				$errors->add($attribute, $this->prepare_message($attribute));
+			}
+		}
+	}
+
+	/**
+	 * Prepare the message to be added to the error collector.
+	 *
+	 * Attribute and size place-holders will replace with their actual values.
+	 *
+	 * @param  string  $attribute
+	 * @return string
+	 */
+	private function prepare_message($attribute)
+	{
+		$message = $this->message;
+
+		if (strpos($message, ':attribute'))
+		{
+			$message = str_replace(':attribute', Lang::line('attributes.'.$attribute)->get(), $message);
+		}
+
+		if ($this instanceof Rules\Size_Of)
+		{
+			$message = str_replace(':max', $this->maximum, $message);
+			$message = str_replace(':min', $this->minimum, $message);
+			$message = str_replace(':size', $this->length, $message);
+		}
+
+		return $message;
+	}
+
+	/**
+	 * Set the validation error message.
+	 *
+	 * @param  string  $message
+	 * @return Rule
+	 */
+	public function message($message)
+	{
+		$this->message = $message;
+		return $this;
+	}
+
+}