/**
* Returns field value from POST data.
*
* @param kyCustomFieldDefinition $custom_field_definition Custom field definition.
* @throws kyException
* @return mixed Field value.
*/
function ky_get_post_value($custom_field_definition)
{
$field_name = $custom_field_definition->getName();
$required = $custom_field_definition->getIsRequired();
$regexp = $custom_field_definition->getRegexpValidate();
$as_array = $custom_field_definition->getType() === kyCustomFieldDefinition::TYPE_CHECKBOX || $custom_field_definition->getType() === kyCustomFieldDefinition::TYPE_MULTI_SELECT;
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
return null;
}
if (!array_key_exists($field_name, $_POST)) {
if ($required) {
throw new kyException("Field '%s' is required.", $custom_field_definition->getTitle());
}
return null;
}
if ($as_array) {
$value = $_POST[$field_name];
if (!is_array($value)) {
if (strlen(trim($value)) > 0) {
$value = array($value);
} else {
$value = array();
}
}
if ($required && count($value) === 0) {
throw new kyException("Field '%s' is required.", $custom_field_definition->getTitle());
}
} else {
$value = trim($_POST[$field_name]);
if ($required && strlen($value) === 0) {
throw new kyException("Field '%s' is required.", $custom_field_definition->getTitle());
}
if (strlen($regexp) > 0 && !preg_match($regexp, $value)) {
throw new kyException("Error validating field '%s'.", $custom_field_definition->getTitle());
}
}
return $value;
}
