Menghapus dukungan Gravatar.com untuk WordPress dan Avatar Lokal Sederhana

Saat ini saya menggunakan Avatar Lokal Sederhana di beberapa blog saya yang memungkinkan orang mengunggah avatar khusus mereka sendiri.

Sejauh yang saya tahu Avatar Lokal Sederhana digunakan get_avataruntuk memeriksa apakah avatar khusus dipilih, jika tidak default ke Gravatar.com.

Apakah mungkin untuk menonaktifkan bit Gravatar.com entah bagaimana, menonaktifkan Gravatar.com sepenuhnya dan mengembalikan hanya beberapa gambar host lokal jika tidak ada avatar khusus yang dipilih?

Saya harap tidak masalah untuk memposting ini di sini, tetapi ini adalah file Avatar Lokal Sederhana

<?php
/*
Plugin Name: Simple Local Avatars
Plugin URI: http://www.get10up.com/plugins/simple-local-avatars-wordpress/
Description: Adds an avatar upload field to user profiles if the current user has media permissions. Generates requested sizes on demand just like Gravatar! Simple and lightweight.
Version: 1.2.3
Author: Jake Goldman (10up), Oomph Inc
Author URI: http://www.get10up.com
*/

// add field to user profiles
class simple_local_avatars {
    function simple_local_avatars() {
        add_filter('get_avatar', array($this, 'get_avatar'), 10, 5);
        add_action('admin_init', array($this, 'admin_init'));
        add_action('show_user_profile', array($this, 'edit_user_profile'));
        add_action('edit_user_profile', array($this, 'edit_user_profile'));
        add_action('personal_options_update', array($this, 'edit_user_profile_update'));
        add_action('edit_user_profile_update', array($this, 'edit_user_profile_update'));
        add_filter('avatar_defaults', array($this, 'avatar_defaults'));
    }

    function get_avatar($avatar = '', $id_or_email, $size = '96', $default = '', $alt = false) {
        if (is_numeric($id_or_email))
            $user_id = (int) $id_or_email;
        elseif (is_string($id_or_email)) {
            if ($user = get_user_by_email($id_or_email))
                $user_id = $user->ID;
        } elseif (is_object($id_or_email) && !empty($id_or_email->user_id))
            $user_id = (int) $id_or_email->user_id;
        if (!empty($user_id))
            $local_avatars = get_user_meta($user_id, 'simple_local_avatar', true);
        if (!isset($local_avatars) || empty($local_avatars) || !isset($local_avatars['full'])) {
            if (!empty($avatar)) // if called by filter
                return $avatar;
            remove_filter('get_avatar', 'get_simple_local_avatar');
            $avatar = get_avatar($id_or_email, $size, $default);
            add_filter('get_avatar', 'get_simple_local_avatar', 10, 5);
            return $avatar;
        }
        if (!is_numeric($size)) // ensure valid size
            $size = '96';
        if (empty($alt))
            $alt = get_the_author_meta('display_name', $user_id);
        // generate a new size
        if (empty($local_avatars[$size])) {
            $upload_path = wp_upload_dir();
            $avatar_full_path = str_replace($upload_path['baseurl'], $upload_path['basedir'], $local_avatars['full']);
            $image_sized = image_resize($avatar_full_path, $size, $size, true);
            if (is_wp_error($image_sized)) // deal with original being >= to original image (or lack of sizing ability)
                $local_avatars[$size] = $local_avatars['full'];
            else
                $local_avatars[$size] = str_replace($upload_path['basedir'], $upload_path['baseurl'], $image_sized);
            update_user_meta($user_id, 'simple_local_avatar', $local_avatars);
        } elseif (substr($local_avatars[$size], 0, 4) != 'http')
            $local_avatars[$size] = site_url($local_avatars[$size]);
        $author_class = is_author($user_id) ? ' current-author' : '';
        $avatar = "<img alt='" . esc_attr($alt) . "' src='" . $local_avatars[$size] . "' class='avatar avatar-{$size}{$author_class} photo' height='{$size}' width='{$size}' />";
        return $avatar;
    }

    function admin_init() {
        load_plugin_textdomain('simple-local-avatars', false, dirname(plugin_basename(__FILE__)) . '/localization/');
        register_setting('discussion', 'simple_local_avatars_caps', array($this, 'sanitize_options'));
        add_settings_field('simple-local-avatars-caps', __('Local Avatar Permissions', 'simple-local-avatars'), array($this, 'avatar_settings_field'), 'discussion', 'avatars');
    }

    function sanitize_options($input) {
        $new_input['simple_local_avatars_caps'] = empty($input['simple_local_avatars_caps']) ? 0 : 1;
        return $new_input;
    }

    function avatar_settings_field($args) {
        $options = get_option('simple_local_avatars_caps');
        echo '
            <label for="simple_local_avatars_caps">
                <input type="checkbox" name="simple_local_avatars_caps" id="simple_local_avatars_caps" value="1" ' . @checked($options['simple_local_avatars_caps'], 1, false) . ' />
                ' . __('Only allow users with file upload capabilities to upload local avatars (Authors and above)', 'simple-local-avatars') . '
            </label>
        ';
    }

    function edit_user_profile($profileuser) {
        ?>
        <h3><?php _e('Avatar', 'simple-local-avatars'); ?></h3>
        <table class="form-table">
            <tr>
                <th><label for="simple-local-avatar"><?php _e('Upload Avatar', 'simple-local-avatars'); ?></label></th>
                <td style="width: 50px;" valign="top">
                    <?php echo get_avatar($profileuser->ID); ?>
                </td>
                <td>
                    <?php
                    $options = get_option('simple_local_avatars_caps');
                    if (empty($options['simple_local_avatars_caps']) || current_user_can('upload_files')) {
                        do_action('simple_local_avatar_notices');
                        wp_nonce_field('simple_local_avatar_nonce', '_simple_local_avatar_nonce', false);
                    ?>
                    <input type="file" name="simple-local-avatar" id="simple-local-avatar" /><br />
                    <?php
                    if (empty($profileuser->simple_local_avatar))
                        echo '<span class="description">' . __('No local avatar is set. Use the upload field to add a local avatar.', 'simple-local-avatars') . '</span>';
                    else
                        echo '
                            <input type="checkbox" name="simple-local-avatar-erase" value="1" /> ' . __('Delete local avatar', 'simple-local-avatars') . '<br />
                            <span class="description">' . __('Replace the local avatar by uploading a new avatar, or erase the local avatar (falling back to a gravatar) by checking the delete option.', 'simple-local-avatars') . '</span>
                        ';
                    } else {
                        if (empty($profileuser->simple_local_avatar))
                            echo '<span class="description">' . __('No local avatar is set. Set up your avatar at Gravatar.com.', 'simple-local-avatars') . '</span>';
                        else
                            echo '<span class="description">' . __('You do not have media management permissions. To change your local avatar, contact the blog administrator.', 'simple-local-avatars') . '</span>';
                    }
                    ?>
                </td>
            </tr>
        </table>
        <script type="text/javascript">
            var form = document.getElementById('your-profile');
            form.encoding = 'multipart/form-data';
            form.setAttribute('enctype', 'multipart/form-data');
        </script>
        <?php
    }

    function edit_user_profile_update($user_id) {
        if (!wp_verify_nonce($_POST['_simple_local_avatar_nonce'], 'simple_local_avatar_nonce')) //security
            return;
        if (!empty($_FILES['simple-local-avatar']['name'])) {
            $mimes = array(
                'jpg|jpeg|jpe' => 'image/jpeg',
                'gif' => 'image/gif',
                'png' => 'image/png',
                'bmp' => 'image/bmp',
                'tif|tiff' => 'image/tiff'
            );
            $avatar = wp_handle_upload($_FILES['simple-local-avatar'], array('mimes' => $mimes, 'test_form' => false));
            if (empty($avatar['file'])) // handle failures
                {
                switch ($avatar['error']) {
                    case 'File type does not meet security guidelines. Try another.':
                        add_action('user_profile_update_errors', create_function('$a', '$a->add("avatar_error",__("Please upload a valid image file for the avatar.","simple-local-avatars"));'));
                        break;
                    default:
                        add_action('user_profile_update_errors', create_function('$a', '$a->add("avatar_error","<strong>".__("There was an error uploading the avatar:","simple-local-avatars")."</strong> ' . esc_attr($avatar['error']) . '");'));
                }
                return;
            }
            $this->avatar_delete($user_id); // delete old images if successful
            update_user_meta($user_id, 'simple_local_avatar', array('full' => $avatar['url'])); // save user information (overwriting old)
        } elseif (isset($_POST['simple-local-avatar-erase']) && $_POST['simple-local-avatar-erase'] == 1)
            $this->avatar_delete($user_id);
    }

    // remove the custom get_avatar hook for the default avatar list output on options-discussion.php
    function avatar_defaults($avatar_defaults) {
        remove_action('get_avatar', array($this, 'get_avatar'));
        return $avatar_defaults;
    }

    // delete avatars based on user_id
    function avatar_delete($user_id) {
        $old_avatars = get_user_meta($user_id, 'simple_local_avatar', true);
        $upload_path = wp_upload_dir();
        if (is_array($old_avatars)) {
            foreach ($old_avatars as $old_avatar) {
                $old_avatar_path = str_replace($upload_path['baseurl'], $upload_path['basedir'], $old_avatar);
                @unlink($old_avatar_path);
            }
        }
        delete_user_meta($user_id, 'simple_local_avatar');
    }
}

$simple_local_avatars = new simple_local_avatars;
if (!function_exists('get_simple_local_avatar')):
/*
 * more efficient to call simple local avatar directly in theme and avoid gravatar setup
 * 
 * @param int|string|object $id_or_email A user ID, email address, or comment object
 * @param int $size Size of the avatar image
 * @param string $default URL to a default image to use if no avatar is available
 * @param string $alt Alternate text to use in image tag. Defaults to blank
 * @return string <img> tag for the user's avatar
 */
    function get_simple_local_avatar($id_or_email, $size = '96', $default = '', $alt = false) {
        global $simple_local_avatars;
        return $simple_local_avatars->get_avatar('', $id_or_email, $size, $default, $alt);
    }
endif;

// on uninstallation, remove the custom field from the users and delete the local avatars
register_uninstall_hook(__FILE__, 'simple_local_avatars_uninstall');

function simple_local_avatars_uninstall() {
    $simple_local_avatars = new simple_local_avatars;
    $users = get_users_of_blog();
    foreach ($users as $user)
        $simple_local_avatars->avatar_delete($user->user_id);
    delete_option('simple_local_avatars_caps');
}

Jika Anda menginginkan solusi super-ringan dan tidak keberatan berkecimpung dalam kode kecil, masukkan ini di functions.php;

function __default_local_avatar()
{
    // this assumes default_avatar.png is in wp-content/themes/active-theme/images
    return get_bloginfo('template_directory') . '/images/default_avatar.png';
}
add_filter( 'pre_option_avatar_default', '__default_local_avatar' );

Atau, jika Anda ingin sedikit lebih banyak, dengan kemampuan untuk mengelola segala sesuatu di admin, periksa Tambahkan Avatar Default Baru .

UPDATE: Saya menulis plugin cepat untuk digunakan bersama Avatar Local Simple.

<?php

/**
 * Plugin Name: Disable Default Avatars
 * Plugin URI: http://wordpress.stackexchange.com/questions/17413
 * Description: To be used alongside <a href="http://www.get10up.com/plugins/simple-local-avatars-wordpress/">Simple Local Avatars</a>, disabling all default avatars and falling back to a single image. Use the filter <code>local_default_avatar</code> to set the path of the image.
 * Version: 1.0
 * Author: TheDeadMedic
 * Author URI: http://wordpress.stackexchange.com/users/1685/thedeadmedic
 */

if ( !function_exists( 'get_avatar' ) ) :
/**
 * Retrieve the avatar for a user who provided a user ID or email address.
 *
 * @since 2.5
 * @param int|string|object $id_or_email A user ID,  email address, or comment object
 * @param int $size Size of the avatar image
 * @param string $default URL to a default image to use if no avatar is available
 * @param string $alt Alternate text to use in image tag. Defaults to blank
 * @return string <img> tag for the user's avatar
*/
function get_avatar( $id_or_email, $size = '96', $default = '', $alt = false ) {
    if ( ! get_option('show_avatars') )
        return false;

    static $default_url; // use static vars for a little caching
    if ( !isset( $default_url ) )
        $default_url = apply_filters( 'local_default_avatar', get_template_directory_uri() . '/images/default_avatar.png' );

    if ( false === $alt)
        $safe_alt = '';
    else
        $safe_alt = esc_attr( $alt );

    if ( !is_numeric( $size ) )
        $size = '96';

    $avatar = "<img alt='{$safe_alt}' src='{$default_url}' class='avatar avatar-{$size} photo avatar-default' height='{$size}' width='{$size}' />";
    return apply_filters( 'get_avatar', $avatar, $id_or_email, $size, $default, $alt );
}
endif;

function __limit_default_avatars_setting( $default )
{
    return 'local_default';
}
add_filter( 'pre_option_avatar_default', '__limit_default_avatars_setting' );

if ( is_admin() ) :
function __limit_default_avatars( $defaults )
{
    return array( 'local_default' => get_bloginfo( 'name' ) . ' Default' );
}
add_filter( 'avatar_defaults', '__limit_default_avatars' );
endif;

?>

Deskripsi plugin harus cukup jelas, tetapi pada dasarnya avatar defaultnya adalah http://wordpress-theme-path/images/default_avatar.png, yang dapat difilter dalam functions.php tema Anda jika ada di tempat lain;

function __my_theme_default_avatar( $url )
{
    return 'http://somewhere/else.jpg';
}
add_filter( 'local_default_avatar', '__my_theme_default_avatar' );

Saya berhasil mengganti semua avatar gravitar.com dengan gambar avatar saya yang dihosting secara lokal dengan menambahkan ini ke function.phpfile tema saya :

define('DEFAULT_AVATAR_URL', get_template_directory_uri() . '/images/user.png');

function no_gravatars( $avatar ) {
    return preg_replace( "/http.*?gravatar\.com[^\']*/", DEFAULT_AVATAR_URL, $avatar );
}
add_filter( 'get_avatar', 'no_gravatars' );

Ini mengasumsikan Anda memiliki avatar default lokal yang dipanggil user.pngdi imagessubdirektori tema Anda .

Di discussion settingspanel admin, pastikan "Tampilkan Avatar" dicentang.

Saya belum mengujinya dengan Avatar Local Simple, tetapi berfungsi baik dengan Avatar Pengguna Dasar (yang merupakan garpu ringan dari Avatar Local Simple).

TIP : Jika Anda merancang avatar default Anda sendiri, saya sarankan membuatnya 300x300 piksel sehingga akan terlihat bagus di layar "retina" ketika WP menampilkannya di "150x150". Kemudian Anda dapat secara signifikan mengurangi ukuran file gambar dengan mengompresnya di tinyPNG.com .

Hapus avatar sepenuhnya. Masukkan kode ini di functions.php dari tema Anda digunakan.

add_action( 'init', 'qmas_remove_avatars' );
if (!function_exists('qmas_remove_avatars')) {
    function qmas_remove_avatars() {
        add_filter( 'bp_core_fetch_avatar', function () { return ''; } );
        add_filter( 'get_avatar', function () { return ''; } );
        add_filter( 'bp_get_signup_avatar', function () { return ''; } );
    }
}