• mystic

• in reply to: Removing Non-Numeric Characters from ACF Form
• April 27, 2021 at 6:32 am

Hi John,

Yes, the plugin is already initialized. Even when I put that ACF filter within functions.php, it still does not do the validation if I put in non-numeric characters.

• mystic

• in reply to: Removing Non-Numeric Characters from ACF Form
• April 26, 2021 at 7:58 am

I tried two things:

1. I put it at the end of my main WordPress functions.php file.
2. I put it in the __construct function of the plugin file I am working with (the main plugin.php) file. For context, it looks like this. Note: I’ve replaced the actual plugin name with a generic “plugin” name.

File: plugin.php
Code:

<?php
/**
 * @package Plugin
 * @version 1.0.0
 */
/*
Plugin Name: Plugin
Plugin URI: https://plugin.com/
Description: Plugin Description
Author:  Me
Version: 1.0.0
Author URI:  https://plugin.com/
*/

class plugin
{
	public static $version = '';

    /**
     * pluginconstructor.
     *
     * The main plugin actions registered for WordPress
     */
    public function __construct()
    {

add_filter(‘acf/validate_value/name=sell_price’, ‘allow_only_floats’, 20, 4);
add_filter(‘acf/validate_value/name=buy_price’, ‘allow_only_floats’, 20, 4);

function allow_only_floats($valid, $value, $field, $input) {
if (!$valid) {
return $valid;
}
if (preg_replace(‘/[^0-9.]/’, $value)) {
return ‘Only numbers are accepted’;
}
return $valid;
}

• mystic

• in reply to: Removing Non-Numeric Characters from ACF Form
• April 25, 2021 at 7:17 pm

I did that but for some reason it made the field disappear. What I really want to do is to strip non-numeric characters before it is submitted.

I looked at this forum thread that you previously answered before John: https://support.advancedcustomfields.com/forums/topic/limit-field-value-to-letters-only-with-no-numbers/ and it did not work. This is what I did:

1. I placed this code into the __construct function of the main plugin php file (the php file with the same name as the plugin). This is the code:

add_filter(‘acf/validate_value/name=sell_price’, ‘allow_only_floats’, 20, 4);
add_filter(‘acf/validate_value/name=buy_price’, ‘allow_only_floats’, 20, 4);

function allow_only_floats($valid, $value, $field, $input) {
if (!$valid) {
return $valid;
}
if (preg_replace(‘/[^0-9.]/’, $value)) {
return ‘Only numbers are accepted’;
}
return $valid;
}

2. When I put in non-numeric characters, it was still being saved with those non-numeric characters.
3. I’m not really sure what the “20” and “4” values mean, but I just copied it from your previous form post.

Where could I go from here?