Validator.php

<?php

class Validator extends \Valitron\Validator {
    public $default_require_message = 'Please enter the {field}';

    public function mapRules($rules) {
        //-- Map rules to \Valitron\Validator type of input
        foreach ($rules as $field => $field_config) {
            if (isset($field_config['rules']) && is_array($field_config)) {
                $required = false;
                $optional = false;
                foreach ($field_config['rules'] as $rule) {
                    if ($rule[0] === 'required') {
                        $required = true;
                    }
                    if ($rule[0] === 'optional') {
                        $optional = true;
                    }
                    $field_rule = call_user_func_array(array($this, "rule"), array_merge(
                        array($rule[0], $field),
                        array_slice($rule, 1)
                    ));
                    if (isset($field_config['messages']) && is_array($field_config['messages']) && isset($field_config['messages'][$rule[0]])) {
                        $field_rule->message($field_config['messages'][$rule[0]]);
                    }
                }

                if (!$required && !$optional) {
                    $this->rule('required', $field)->message($this->default_require_message);
                }
            } else {
                $required_message = $this->default_require_message;
                if (isset($field_config['messages']) && !empty($field_config['messages']['required'])) {
                    $required_message = $field_config['messages']['required'];
                }
                $this->rule('required', $field)->message($required_message);
            }
            if (isset($field_config['label'])) {
                $this->labels(array($field => $field_config['label']));
            }
        }
    }

    public function firstErrors() {
        $errors = $this->errors();
        return array_map(function ($errors) {
            return $errors[0];
        }, $errors);
    }

    /**
     * @return string
     */
    public function getDefaultRequireMessage()
    {
        return $this->default_require_message;
    }

    /**
     * @param string $default_require_message
     *
     * @return Validator
     */
    public function setDefaultRequireMessage($default_require_message)
    {
        $this->default_require_message = $default_require_message;

        return $this;
    }
}