How to add regex validator in form class in zend - zend-framework

Question

I have a User form class which has elements and I am trying to add Regex validator.
Here is what I have tried
$inputFilter->add([
"name" => "password",
"required" => true,
"filters" => [
],
"validators" => [
[
"name" => new Regex(["pattern" => "/^[a-zA-Z0-9_]+$/"]),
],
[
"name" => "NotEmpty",
],
[
"name" => "StringLength",
"options" => [
"min" => 6,
"max" => 64
],
],
],
]);
But it throws
Object of class Zend\Validator\Regex could not be converted to string
Can anyone help me out?

Answer 1

You can add input filter specifications for the validator, the following should work
$inputFilter->add([
"name" => "password",
"required" => true,
"filters" => [
],
"validators" => [
// add validator(s) using input filter specs
[
"name" => "Regex",
"options" => [
"pattern" => "/^[a-zA-Z0-9_]+$/"
],
],
[
"name" => "NotEmpty",
],
[
"name" => "StringLength",
"options" => [
"min" => 6,
"max" => 64
],
],
],
]);
If you really want to instantiate the object (using the new Regex(...) as in your original code), you can do that this way instead
$inputFilter->add([
"name" => "password",
"required" => true,
"filters" => [
],
"validators" => [
// add a regex validator instance
new Regex(["pattern" => "/^[a-zA-Z0-9_]+$/"]),
// add using input filter specs ...
[
"name" => "NotEmpty",
],
[
"name" => "StringLength",
"options" => [
"min" => 6,
"max" => 64
],
],
],
]);
You may also find this zf blog post useful Validate data using zend-inputfilter, as well as the official zend-input-filter docs