initial commit of validation classes.

system/validator.php

@@ -0,0 +1,94 @@
+<?php namespace System;
+
+class Validator {
+
+	/**
+	 * The attributes being validated.
+	 *
+	 * @var array
+	 */
+	public $attributes;
+
+	/**
+	 * The validation error collector.
+	 *
+	 * @var Error_Collector
+	 */
+	public $errors;
+
+	/**
+	 * The validation rules.
+	 *
+	 * @var array
+	 */
+	public $rules = array();
+
+	/**
+	 * Create a new Eloquent validator instance.
+	 *
+	 * @param  mixed  $target
+	 * @return void
+	 */
+	public function __construct($target)
+	{
+		// ---------------------------------------------------------
+		// If the source is an Eloquent model, use the model's
+		// attributes as the validation attributes.
+		// ---------------------------------------------------------
+		$this->attributes = ($target instanceof DB\Eloquent) ? $target->attributes : (array) $target;
+
+		$this->errors = new Validation\Error_Collector;
+	}
+
+	/**
+	 * Create a new Eloquent validator instance.
+	 *
+	 * @param  mixed      $target
+	 * @return Validator
+	 */
+	public static function of($target)
+	{
+		return new static($target);
+	}
+
+	/**
+	 * Determine if the model passes all of the validation rules.
+	 *
+	 * @return bool
+	 */
+	public function is_valid()
+	{
+		$this->errors->messages = array();
+
+		foreach ($this->rules as $rule)
+		{
+			// ---------------------------------------------------------
+			// The error collector is passed to the rule so that the
+			// rule may conveniently add error messages.
+			// ---------------------------------------------------------
+			$rule->validate($this->attributes, $this->errors);
+		}
+
+		return count($this->errors->messages) === 0;
+	}
+
+	/**
+	 * Magic Method for dynamically creating validation rules.
+	 */
+	public function __call($method, $parameters)
+	{
+		// ---------------------------------------------------------
+		// Check if the validation rule is defined in the rules
+		// directory. If it is, create a new rule and return it.
+		// ---------------------------------------------------------
+		if (file_exists(SYS_PATH.'validation/rules/'.$method.EXT))
+		{
+			$rule = '\\System\\Validation\\Rules\\'.$method;
+
+			return $this->rules[] = new $rule($parameters);
+		}
+
+		throw new \Exception("Method [$method] does not exist on Validator class.");
+	}
+
+}