Suppression de support Gravatar.com pour WordPress et simples Avatars locaux

https://wordpress.stackexchange.com/questions/17413

22-10-2019
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Question

Actuellement, je suis en utilisant Avatars simples locaux sur plusieurs de mes blogs permettant aux gens de télécharger leur propre avatar personnalisé.

Pour autant que je sais des utilisations simples locales Avatars get_avatar pour vérifier si un avatar personnalisé est sélectionné, sinon par défaut Gravatar.com.

Serait-il possible de désactiver le bit Gravatar.com d'une certaine manière, la désactivation de Gravatar.com complètement et revenir juste une image locale animée si aucun avatar personnalisé est sélectionné?

J'espère que ce serait OK pour poster cela ici, mais ce serait le fichier local simple Avatars

<?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');
}

La solution

Si vous voulez une solution super-léger et ne me dérange pas barboter dans un petit code, déposez dans votre 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' );

Par ailleurs, si vous voulez un peu plus de jus, avec la capacité de gérer tout l'administrateur, consultez

Autres conseils

I successfully replaced all gravitar.com avatars with my own locally hosted avatar image by adding this to my theme's function.php file:

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' );

This assumes you have a local default avatar called user.png in your theme's images subdirectory.

In the discussion settings admin panel, make sure "Show Avatars" is ticked.

I haven't tested this with Simple Local Avatars, but it works great with Basic User Avatars (which is a lightweight fork of Simple Local Avatars).

TIP: If you're designing your own default avatar, I recommend making it 300x300 pixels so it will look good on "retina" screens when WP displays it at "150x150". Then you can significantly reduce the filesize of the image by compressing it at tinyPNG.com.

Remove avatars completely. Put this code in functions.php from your theme in use.

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 ''; } );
    }
}

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