[英]How to make Gravity Forms name field input only accept letters
如何使重力表单名称字段只接受字母,数字应该会出现错误。
You need to use gform_field_validation validation filter to be able to do this kind of validation
before the form submits.您需要使用gform_field_validation验证过滤器才能在表单提交之前进行这种
validation
。
In addition, we need to use preg_match function of PHP with a regex
to ensure we are only taking Letters from Full Name input value.此外,我们需要使用带有
regex
的 PHP 的preg_match函数来确保我们只从全名输入值中获取字母。
Just add this code in your active theme functions.php file: (Code tested and working)只需将此代码添加到您的活动主题functions.php 文件中即可:(代码已测试且有效)
add_filter( 'gform_field_validation', function ( $result, $value, $form, $field ) {
if ( $field->type == 'name' ) {
// Input values
$fullName = rgar( $value, $field->id . '.3' );
if ( empty( $fullName )) {
$result['is_valid'] = false;
$result['message'] = empty( $field->errorMessage ) ? __( 'This field is required. Please enter a complete name.', 'gravityforms' ) : $field->errorMessage;
} else if (preg_match('/[A-Za-z].*[0-9]|[0-9].*[A-Za-z]/', $fullName)) { //check for letters only
$result['is_valid'] = false;
$result['message'] = empty( $field->errorMessage ) ? __( 'Full name must ony contains letters.', 'gravityforms' ) : $field->errorMessage;
} else {
$result['is_valid'] = true;
$result['message'] = '';
}
}
return $result; //return results
}, 10, 4 );
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.