Reply To: update_field in a loop of a list of users

• gummi

• February 13, 2018 at 6:53 am

Hi,

What I mean by the $_POST['tri'] is that, your form output is looking something like this:

<form action="..." method="POST" class="user-email-settings">
    <div class="user">
        <input type="checkbox" id="1" name="1" class="pref" value="1" checked /> first last
    </div>
    <div class="user">
        <input type="checkbox" id="2" name="2" class="pref" value="1" /> first last
    </div>
    ...
    <input type="submit" value="Update Tri Annual Status" name="status" id="status" class="ai-button" />
</form>

None of the input contains the name ‘tri’. Therefor your $_POST will only contains:

$_POST = [
    1 => 1,
    'status' => 'Update Tri Annual Status'
];

1) the name of the checkbox input is the index in the $_POST variable.
2) if the checkbox is not check, the $_POST variable will not include them.

—————————————————————————
Based on my understanding of your code, i think what you want is something like the following:

if (has_some_permission()):
    $users = do_something_to_get_those_users();

    if ($_POST['status']) {
        foreach ($users as $user) {
            update_field('field_598c6559e1b0d', $_POST['tri'][$user->ID], $user);
        }

        echo '<p class="success">Status Updated<p>';
    }

    echo '<h2 class="group-table-heading">Tri Annual Status</h2>';
    echo '<form action="' . get_the_permalink() . '" method="POST" class="user-email-settings">';

    foreach ($users as $user) {
        $f     = get_user_meta($user->ID, 'first_name', true);
        $l     = get_user_meta($user->ID, 'last_name', true);                     
        $field = get_user_meta($user->ID, 'tri', true); 
        // is this an acf field?
        // $field = get_field('field_598c6559e1b0d', $user);
        // $field = get_field('tri', $user);
        
        echo '<div class="user">';
            echo sprintf('<input type="hidden" name="tri[%d]" value="0" />', $user->ID);
            echo sprintf('<input type="checkbox" name="tri[%d]" value="1" %s />', $user->ID, $field? 'checked' : '');
            echo " {$f} {$l}";
        echo '</div>';
    }

    echo '<input type="submit" value="Update Tri Annual Status" name="status" id="status" class="ai-button" />';
    echo '</form>';
}

Notice the checkbox’s name attribute is what will get put into the $_POST variable.
The $_POST variable after this form is submitted will be something like:

$_POST = [
    'tri' => [
        1 => 1,
        2 => 0,
        3 => 0,
        4 => 0
    ],
    'status' => 'Update Tri Annual Status'
];

Cheers