Japanese Katakana validation code

Resolved yousj0226
(@yousj0226)

4 years, 7 months ago

Hi, i would like to add custome Japanese ‘Katakana’ validation.
This is my code below,
but it isn’t work.
do you have any idea to make it work?

thank you

function wpdesk_fcf_validate_katakana( $field_label, $value ) {
if ( filter_var( $value,’/^[ァ-ヾ]+$/u ‘ ) == false ) {
wc_add_notice( sprintf( ‘%s is not a valid katakana.’, ‘‘ . $field_label . ‘‘ ), ‘error’ );
}
}

add_filter( ‘flexible_checkout_fields_custom_validation’, ‘wpdesk_fcf_custom_validation_katakana’ );
/**
* Add custom URL validation
*
*/
function wpdesk_fcf_custom_validation_url( $custom_validation ) {
$custom_validation[‘katakana’] = array(
‘label’ => ‘katakana’,
‘callback’ => ‘wpdesk_fcf_validate_katakana’
);

return $custom_validation;
}

Viewing 2 replies - 1 through 2 (of 2 total)

Plugin Support

(@tomaszwp)

Please use this general code but adapt it to this particular case.
if ( preg_match( ‘/^(\p{Katakana})+/’, $value ) ) {

class KatakanaValidator {

    // unique validation key to avoid validation duplication
    const VALIDATION_KEY   = 'Katakana Validation';
    
    // change 'text-domain' string to custom text domain to allow translating the field. 
    const THEME_TEXTDOMAIN = 'text-domain';

    public function hooks() {
        add_filter( 'flexible_checkout_fields_custom_validation', [ $this, 'add_custom_validation_rule' ] );
    }

    public function add_custom_validation_rule( array $custom_validations ): array {
        $custom_validations[ self::VALIDATION_KEY ] = [
            'label'     => 'Katakana validation',
            'callback'  => [ $this, 'validate_field_value' ],
        ];

        return $custom_validations;
    }

    /**
     * @return void
     */
    public function validate_field_value( $field_label, $value ) {
        if ( preg_match( '/^(\p{Katakana})+/', $value ) ) {
            return;
        }

        wc_add_notice(
            sprintf(
                __( '%s is not a valid katakana string.', self::THEME_TEXTDOMAIN ),
                '<strong>' . $field_label . '</strong>'
            ),
            'error'
        );
    }
}

( new KatakanaValidator() )->hooks();

Thread Starter

yousj0226

(@yousj0226)

4 years, 7 months ago

@tomaszwp

It works perfectly for me!!
Thank you so much!

Viewing 2 replies - 1 through 2 (of 2 total)