/**
* Returns true if the value has not been previously submitted.
* Return false otherwise.
*
* @param $value
* @return boolean
*/
public function isValid($value)
{
global $wpdb;
$sql = "SELECT `e`.`id` FROM " . iphorm_get_form_entry_data_table_name() . " ed LEFT JOIN " . iphorm_get_form_entries_table_name() . " e ON `ed`.`entry_id` = `e`.`id`\n WHERE `e`.`form_id` = %d\n AND `ed`.`element_id` = %d\n AND `ed`.`value` = '%s';";
$result = $wpdb->get_row($wpdb->prepare($sql, $this->_element->getForm()->getId(), $this->_element->getId(), $this->_element->getValueHtml()));
if ($result != null) {
$this->addMessage($this->_messageTemplates['duplicate']);
return false;
}
return true;
}
