Getting field values from Settings page

This topic has 7 replies, 2 voices, and was last updated 2 years, 6 months ago by Sridhar.

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March 29, 2021 at 8:34 AM #26783

Participant

I am probably missing something obvious but can't get the URL of an image-type field from a Settings page to appear on the front end.

Settings page:

<?php
add_filter( 'mb_settings_pages', 'custom_settings_page' );

function custom_settings_page( $settings_pages ) {
    $settings_pages[] = [
        'menu_title'  => __( 'Options', 'project-name' ),
        'option_name' => 'my_options',
        'position'    => 25,
        'columns'     => 1,
        'icon_url'    => 'dashicons-admin-generic',
    ];

    return $settings_pages;
}

Field group:

<?php
add_filter( 'rwmb_meta_boxes', 'custom_sitewide_fields_group' );

function custom_sitewide_fields_group( $meta_boxes ) {
    $prefix = 'settings_';

    $meta_boxes[] = [
        'title'          => __( 'Sitewide', 'project-name' ),
        'id'             => 'sitewide',
        'settings_pages' => ['my-options'],
        'fields'         => [
            [
                'name'              => __( 'Logo', 'project-name' ),
                'id'                => $prefix . 'logo',
                'type'              => 'image',
                'label_description' => __( 'Upload/select site\'s logo image', 'project-name' ),
                'max_file_uploads'  => 1,
            ],
            [
                'name'              => __( 'Notice', 'project-name' ),
                'id'                => $prefix . 'notice',
                'type'              => 'wysiwyg',
                'label_description' => __( 'If present, will appear above the site header. Can be used for specials and promotional messages.', 'project-name' ),
            ],
            [
                'name' => __( 'Button Background Color', 'project-name' ),
                'id'   => $prefix . 'button_background_color',
                'type' => 'color',
            ],
        ],
    ];

    return $meta_boxes;
}

Here's the code that shows just blank output:

<?php
$value = rwmb_meta( 'logo', ['object_type' => 'setting'], 'my_options' );
echo $value['url'];
?>

Any idea?

March 29, 2021 at 8:41 AM #26784

Sridhar

Participant

Forgot to add that I see the fields on the settings page and populated them incl. uploading an image to the logo field.

March 29, 2021 at 10:54 AM #26787

Long Nguyen

Moderator

Hi Sridhar,

Thank you for reaching out.

There are some problems with your code when registering the settings page, meta box, and output the field image value, please follow these steps:

the settings page should have an ID

$settings_pages[] = [
        'menu_title'  => __( 'Options', 'project-name' ),
        'option_name' => 'my_options',
        'id'        => 'my-options',
        'position'    => 25,
        'columns'     => 1,
        'icon_url'    => 'dashicons-admin-generic',
    ];

when registering the meta box, the key settings_page has to assign to option name

 $meta_boxes[] = [
        'title'          => __( 'Sitewide', 'project-name' ),
        'id'             => 'sitewide',
        'settings_pages' => 'my_options',
        'fields'         => [
            ...
        ],
    ];

the field logo has the prefix concatenated so the right ID of it is settings_logo
the field image is set to multiple, so you should use the loop to iterate through the array of images to get the image information. Get more details here https://docs.metabox.io/fields/image/#template-usage

the code should be:

$images = rwmb_meta( 'settings_logo', ['object_type' => 'setting'], 'my_options' );

foreach ( $images as $image ) {
    echo '<a href="', $image['full_url'], '"><img src="', $image['url'], '"></a>';
}

March 29, 2021 at 11:04 AM #26788

Sridhar

Participant

I am actually visually setting up the Settings page and the field group (and fields). The code is something I copied and pasted by clicking the "Get PHP Code" button.

Settings page screenshot: https://d.pr/i/DLS3e6

Field group screenshot: https://d.pr/i/RmnsoZ

Settings page fields populated: https://d.pr/i/CMZMSs

I currently have "Max number of files" set to 1 for the Image-type field.

The following code isn't showing any output:

$value = rwmb_meta( 'settings_logo', ['object_type' => 'setting'], 'my_options' );
echo $value['url'];

March 29, 2021 at 11:32 AM #26789

Long Nguyen

Moderator

Hi,

The setting "Max number of files" only limits the user to upload one file, the data still returns an array of images.

You can use the function reset() to get the first-one array element.

$images = rwmb_meta( 'settings_logo', ['object_type' => 'setting'], 'my_options' );
$image = reset( $images );
?>
<img src="<?php echo $image['url']; ?>">

See more on this docs https://docs.metabox.io/fields/image/#template-usage.