Prestashop : Remove Lastname Field Rules Validation From B.O - prestashop

Question

I am trying to remove rules validation for customer's Lastname field..
I have succeed to do it in the front page for customer registration by editing Classes/Customer.php file like this:
'lastname' =>array('type' => self::TYPE_STRING, 'validate' => 'isCustomerName', 'required' => true, 'size' => 32),
to :
'lastname' =>array('type' => self::TYPE_STRING, 'validate' => 'isAnything', 'required' => true, 'size' => 32),
I have simply used isAnything in validation.
But that's not working in the Backoffice, so i can't edit customers from BO.
Can't find what file to change exactly.
I am using Prestashop V1.7.6.8.
Need help please. Thanks

Answer 1

You must modify two methods in two files.
src/Core/ConstraintValidator/CustomerNameValidator.php, method isNameValid
private function isNameValid($name)
{
return true; // Here true or your own validation.
// Down the original code.
$pattern = $this->characterCleaner->cleanNonUnicodeSupport(self::PATTERN_NAME);
return (bool) preg_match($pattern, $name);
}
src/Core/Domain/Customer/ValueObject/LastName.php, method assertLastNameIsValid
private function assertLastNameIsValid($lastName)
{
return true; // Here true or your own validation.
// Down the original code.
$matchesLastNamePattern = preg_match('/^[^0-9!<>,;?=+()##"°{}_$%:¤|]*$/u', stripslashes($lastName));
if (!$matchesLastNamePattern) {
throw new CustomerConstraintException(sprintf('Customer last name %s is invalid', var_export($lastName, true)), CustomerConstraintException::INVALID_LAST_NAME);
}
}