<?php
namespace RSSAutopilot;
/**
* Class ValidateForm
* @package RSSAutopilot
*/
class ValidateForm {
/**
* Validation rules
* @var array
*/
private $fields = array();
/**
* Form data
* @var array
*/
private $data = array();
/**
* Default error messages
* @var array
*/
private $messages = array();
/**
* Available validators
* @var array
*/
private $validators = array(
'required'
);
/**
* Form class constructor, set default messages
*/
public function __construct()
{
$this->messages = array(
'required' => __( '%s is a required field', 'rss-autopilot' )
);
}
/**
* Add field to validate
* @param $name
* @param $label
* @param array $validationRules
*/
public function addField($name, $label, $validationRules=array())
{
$this->fields[$name] = array(
'label' => $label,
'rules' => $validationRules
);
}
/**
* Clear validation rules
*/
public function clear()
{
$this->fields = array();
}
/**
* Set form data
* @param array $data
*/
public function setData($data=array())
{
$this->data = $data;
}
/**
* Validate form
* @return array with errors
*/
public function validate()
{
$errors = array();
foreach ($this->fields as $field => $data)
{
foreach ($data['rules'] as $rule)
{
if (is_array($rule)) {
$validator = $rule[0];
$message = $rule[1];
} else {
$validator = $rule;
$message = $this->messages[$rule];
}
$error = $this->validateField($field, $data['label'], $validator, $message);
if ($error !== true) {
$errors[$field] = $error;
}
}
}
return $errors;
}
/**
* Check if form is valid
* @return bool
*/
public function isValid()
{
$errors = $this->validate();
if (count($errors)) {
return false;
} else {
return true;
}
}
/**
* Validate single field
* @param string $field
* @param string $label
* @param string $rule
* @param string $message
* @return bool|string
*/
public function validateField($field, $label, $rule, $message)
{
// If it isn't a valid rule - display wp error
if (!in_array($rule, $this->validators)) {
wp_die(__( 'Invalid validation rule', 'rss-autopilot' ));
}
$method = 'validate'.ucfirst($rule);
// Check if field is valid
if ($this->$method($field) === true) {
return true;
} else {
return $this->putName($label, $message);
}
}
/**
* Put name into message string
* @param string $label
* @param string $message
* @return string result message
*/
private function putName($label, $message)
{
return str_replace('%s', $label, $message);
}
/**
* Validate required field
* @param string $field
* @return bool
*/
private function validateRequired($field)
{
if (isset($this->data[$field]) && $this->data[$field]) {
return true;
} else {
return false;
}
}
}