system/classes/Validate.php
public function run()
    {
        if (count($this->errors) == 0) {
            return true;
        }
        else {
            $this->controller->setData('errors', $this->errors);
            return false;
        }
    }
public function run()
    {
        if (count($this->errors) == 0) {
            return true;
        }
        else {
            $this->controller->setData('errors', $this->errors);
            return false;
        }
    }
Passes list of errors to calling controller.
Returns TRUE if all checks passed. False otherwise.