Generate checkbox list choices with callback

This topic has 6 replies, 2 voices, and was last updated 3 weeks, 5 days ago by Yumikom.

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December 20, 2024 at 4:58 PM #47214

Yumikom
Participant

Hi,

Generating checkbox list choices with callback, but all other field values are returned false in the function I defined.
This is the checkbox list used in the site settings page.

Is it possible to get the stored values of the other fields?

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December 22, 2024 at 11:29 PM #47220

Peter
Moderator

Hello Yumiko,

Can you please share more details of the issue on your site? Because I don't know what exactly the issue is. Let me know the callback function, other field values, settings page ... and screenshots of them.

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December 23, 2024 at 4:26 PM #47222
Yumikom
Participant
Hi Peter,

The test code is as follows

What we want to achieve
* Generate the contents of the checkbox list in the callback of test_B depending on the status of the checkbox in test_A.

Defects
* When the value of test_A is retrieved in the callback of test_B, it is always false as well.
```
<?php
add_filter( 'rwmb_meta_boxes', 'example' );

function example( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = [
        'title'          => __( 'test field group', 'example-domain' ),
        'id'             => 'test1',
        'settings_pages' => ['custom-options'],
        'fields'         => [
            [
                'name'              => __( 'test A', 'example-domain' ),
                'id'                => $prefix . 'test_a',
                'type'              => 'checkbox',
                'std'               => false,
                'required'          => false,
                'clone'             => false,
                'clone_empty_start' => false,
            ],
            [
                'name'              => __( 'test B', 'example-domain' ),
                'id'                => $prefix . 'test_b',
                'type'              => 'checkbox_list',
                'options'           => test_function(),
                'inline'            => false,
                'select_all_none'   => false,
                'required'          => false,
                'clone'             => false,
                'clone_empty_start' => false,
            ],
        ],
    ];

    return $meta_boxes;
}
```
```
function test_function() {
	$value_a = rwmb_meta( 'test_A', array( 'object_type' => 'setting' ), 'custom-options' );

	$optionsA = array(
		'1' => 'Apple',
		'2' => 'Orange'
	);

	$optionsB = array(
		'3' => 'Cat',
		'4' => 'Dog'
	);

	return $value_a ? $optionsA : $optionsB;
}
```
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December 23, 2024 at 11:17 PM #47226
Peter
Moderator
Hello,

Please ensure the option name is added to the helper function, and the separator should be underscore instead of dash. For example custom_options
```
$value_a = rwmb_meta( 'test_A', array( 'object_type' => 'setting' ), 'custom_options' );
```
Following the documentation https://docs.metabox.io/extensions/mb-settings-page/#using-code

After you save the field test_a value, the $optionsA will be returned.

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December 24, 2024 at 9:45 AM #47227
Yumikom
Participant
Hi,

The defect is not related to the name of the settings ID.
It is the correct setting in my code.

I am specifying Metabox for the Settings page configured in the code below.
```
define( 'SETTINGS_OPTION_NAME', 'custom-options' );
function com_options_page( $settings_pages ) {
	$settings_pages[] = array(
		'id'          => SETTINGS_OPTION_NAME,
		'option_name' => SETTINGS_OPTION_NAME,
		'menu_title'  => 'サイト設定',
		'icon_url'    => 'dashicons-edit',
		'style'       => 'no-boxes',
		'columns'     => 1,
		'position'    => 2,
	);
	return $settings_pages;
}
add_filter( 'mb_settings_pages', 'com_options_page' );
```
I make sure that $value_a is always false.
Can you please confirm the behavior of this bug?

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December 24, 2024 at 11:38 PM #47233
Peter
Moderator
Hello,

I understand the issue. It is related to this topic https://support.metabox.io/topic/dynamically-populate-the-options-of-a-select-custom-field-base-on-global-cf/

you need to use the WordPress function get_option() to get the settings page value (like the theme option) when creating the custom field. At this point, the helper function rwmb_meta() doesn't work.

Here is an example
```
function test_function() {
    $options = get_option( 'custom-options' );
    $value_a = $options['test_a'];

    $optionsA = array(
        '1' => 'Apple',
        '2' => 'Orange'
    );

    $optionsB = array(
        '3' => 'Cat',
        '4' => 'Dog'
    );

    return $value_a ? $optionsA : $optionsB;
}
```
If you use the builder, you will need to re-update the field group to update the choice for the field test_b.

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December 25, 2024 at 1:06 PM #47235

Yumikom
Participant

Hi peter,

It could be obtained with get_options().
Thank you for sharing this information.

It would be helpful if you could also mention in the document that rwmb_meta() is not available in callback.

Thanks again.

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