wp_usermeta - Read from database, but save function broken

Question

I added a custom field to the profile-page of WordPress users called "uidnumber" and it reads values from the database just fine, however it just doesn't save anything.

I'd rather save it in wp_users instead if I could because the whole table is just that much more clear, however from what I've read, WordPress updates could delete custom columns.

Here's what I got in my functions.php:

add_action( 'personal_options_update', 'save_extra_profile_fields' );
add_action( 'edit_user_profile_update', 'save_extra_profile_fields' );

function save_extra_profile_fields( $user_id )
{
    update_user_meta( $user_id,'uidnumber', sanitize_text_field( $_POST['uidnumber'] ) );
}

and here's the field itself :

<p class="form-row form-row-wide">
                <label for="uidnumber"><?php _e( 'UID-Nummer', 'woocommerce' ); ?></label>
                <input type="text" class="input-text" name="uidnumber" id="uidnumber" value="<?php echo esc_attr( $user->uidnumber); ?>" />
            </p>

I have no idea why it won't save this field, while another one I coded into the "contact_methods", works like a charm.

edit01:

I tried what you told me, still doesn't save unless I put it in the wrong place.

<p class="form-row form-row-wide">
                <label for="uidnumber"><?php _e( 'UID-Nummer', 'woocommerce' ); ?></label>
                <input type="text" class="input-text" name="uidnumber" id="uidnumber" value="<?php echo get_user_meta( $user->ID, 'uidnumber', true ); ?>" />
            </p>

Or did you mean to put it in my save function? (As you mentioned value I assumed otherwise)

edit02: I think my main problem is that what you specified in your "show"-function is actually inside another file in my case: form-edit-account.php So I can't just use your "show_extra_profile_fields" function.

Also one thing that seems to be misunderstood: I want the user (normal user on WordPress) to be able to add his own text. That's the only reason I'm doing this. Personally I can add a UID-Number in the backend just fine. However that means I have to find out the UID for each and every user myself.

edit03:

functions.php - Here only the last couple lines are actually relevant.

form-edit-account.php

Answer 1

You have not provided the whole code so don't understand where you are wrong, this script is working fine for me.

add_action( 'personal_options_update', 'save_extra_profile_fields' );
add_action( 'edit_user_profile_update', 'save_extra_profile_fields' );

function save_extra_profile_fields( $user_id )
{
    if ( current_user_can('edit_user',$user_id) )
        update_user_meta($user_id, 'uidnumber', sanitize_text_field($_POST['uidnumber']));
}

add_action('show_user_profile', 'show_extra_profile_fields');
add_action('edit_user_profile', 'show_extra_profile_fields');

function show_extra_profile_fields( $user )
{
    ?>
        <p class="form-row form-row-wide">
            <label for="uidnumber"><?php _e( 'UID-Nummer', 'woocommerce' ); ?></label>
            <input type="text" class="input-text" name="uidnumber" id="uidnumber" value="<?php echo get_user_meta( $user->ID, 'uidnumber', true ); ?>" />
        </p>
    <?php
}

EDIT : For frontend code

You have to save uidnumber through update_user_meta here is the code

global $user;

$user = wp_get_current_user();

if ( $_POST )   {

    update_user_meta( $user->ID, 'uidnumber', sanitize_text_field($_POST['uidnumber']) );
}

EDIT 2 : personal_options_update action only works in admin section, you have to put that code into front end check pastebin

1. sanitize_text_field
2. show_user_profile
3. edit_user_profile
4. personal_options_update
5. edit_user_profile_update